1.3 - Liebert-APM250 User Manual

Liebert APM 250kVA Modular UPS
User Manual
Version: V1.7
Revision date: October 10, 2019
BOM: 31013659
Vertiv provides customers with technical support. Users may contact the nearest Vertiv local sales office or service
center.
2017 Copyright, 2019 by Vertiv Tech Co., Ltd.

All rights reserved. The contents in this document are subject to change without notice.
Vertiv Tech Co., Ltd.

Address: Block B2, Nanshan I Park, No.1001 Xueyuan Road, Nanshan District, Shenzhen, 518055, P.R.China
Homepage: www.Vertiv.com
E-mail: overseas.support@vertiv.com
Special Declaration
Personnel Safety
1. This product must be installed and commissioned by professional engineers of the manufacturer or its authorized
agent. Failure to observe this could result in product malfunction or personnel safety risk.
2. Take the time to read this product manual and the safety precaution thoroughly before installing and commissioning
this product. Failure to observe this could result in product malfunction or personnel safety risk.
3. This product is not intended for life support equipment application.
4. Never dispose of the internal or external battery of this product in a fire, as it may explode and jeopardize personnel
safety when exposed to flame.
Product Safety
1. If this product will be stored or remain de-energized for a long period, it must be placed in a dry and clean
environment within specified temperature range.
2. This product should be used in an appropriate operating environment. For details, refer to the section on the
environmental requirement in this manual.
3. This product is not designed for application in an environment:
⚫ Where the temperature and relative humidity are outside the specifications
⚫ Subject to vibrations or shocks
⚫ Where conductive dusts, corrosive gases, salts, or flammable gases are present
⚫ Near heat sources or strong electromagnetic interferences
Disclaimer
Vertiv disclaims any and all responsibility or liability for the defects or malfunction caused by:
⚫ Application range or operating environment outside the specifications
⚫ Unauthorized modification, improper installation or operation
⚫ Force majeure
⚫ Other actions not in compliance with the instructions in this manual
Safety Precaution
Always observe the following safety symbols!
Used to alert the user to the risk of death or severe injury should the unit be used improperly.
Used to alert the user to the risk of injury or equipment damage should the unit be used improperly .
Used to advise the user to carefully read and observe this unit though it may not cause damage.
This manual contains information concerning the installation and operation of the Liebert APM 250kVA UPS single
module and parallel system.
Read this manual thoroughly before installing, using and servicing the UPS.
Important
The UPS with standard configuration is a category C3 product for commercial and industrial application in the second
environment. Installation restrictions or additional measures may be needed to prevent disturbances.
Conformity and standards
1. This product complies with CE 2014/35/EU (low voltage safety) and 2014/30/EU (EMC), EMC standards of Australia and New
Zealand (C-Tick), and the following UPS product standards:
* IEC62040-1 General safety requirements for UPS
* IEC62040-2-EMC
* IEC62040-3 Performance requirements and test methods
For details, refer to Chapter 11 Specifications.
2. Continued compliance requires installation in accordance with these instructions and the use of manufacturer approved
accessories only.
Warning: high earth leakage current
1. Earth connection is critical before connecting the input supply (including both mains supply and battery).
2. This equipment is installed with an EMC filter.
3. Earth leakage current is less than 3000mA.
4. Transient and steady state earth leakage currents, which may occur when the equipment is started, should be taken into
account in the selection of instantaneous RCCBs or RCD devices.
5. RCCB which is sensitive to unidirectional DC pulse (class A) and insensitive to transient state current pulse must be selected.
6. Note also that the earth leakage currents of the load will be carried by the RCCBs or RCDs.
7. The equipment must be earthed in accordance with the local electrical code of practice.
Warning
The selection of the upstream distribution protection equipment of the UPS shall be selected in accordance with the local
electrical regulations.
Warning: backfeeding protection
This UPS is fitted with a dry contact closure signal for use with an external automatic disconnect device (supplied by others) to
protect against backfeeding voltage into the incoming terminal through the rectifier or bypass static switch circuit. A label must be
added at all external incoming primary supply disconnect device to warn service personnel that the circuit is connected to a UPS.
The text of the label has the following meaning: Risk of voltage backfeed! Isolate the UPS, then check for hazardous voltage
between all terminals including the protective earth before working on this circuit.
User serviceable components (For service personnel)
All equipment maintenance and servicing procedures involving internal access requires the use of a tool and should be carried out
only by trained personnel. There are no user-serviceable parts behind covers requiring a tool/key for removal.
Battery voltage exceeds 400Vdc (For service personnel)
1. All physical battery maintenance and servicing procedures requires the use of a tool/key and should be carried out only by
trained personnel.
2. Take special care when working with the batteries associated with this UPS. When connected together, the battery terminal
voltage will exceed 400Vdc and is potentially lethal.
3. Battery manufacturers supply details of the necessary precautions to be observed in working on, or in the vicinity of, a large
bank of battery cells. These precautions should be followed implicitly at all times. Particular attention should be paid to the
recommendations concerning local environmental conditions and the provision of protective clothing, first aid and fire-fighting
facilities.
General safety (For users)

1. Like other types of large power equipment, the UPS and battery circuit breaker box/battery cabinet have high voltage inside.
Because the components with high voltage can be accessed only when the front door is opened, the risk of contacting high
voltage has been minimized. This equipment meets the IP20 standard, and other safety shields are provided inside the
equipment.
2. There will not be any risk when operating this equipment according to the general instructions and the steps recommended in
this manual.
Multiple power inputs (For users)
1. This UPS system receives power from more than one source. Disconnection of all AC source and the DC source is required
before servicing.
2. This UPS has several circuits that are energized with high AC as well as DC voltages. Check for voltage with both AC and DC
voltmeters before working within the UPS.
Warning
If internal fuse of the UPS is damaged, it must be replaced with fuse of the same electric parameters by qualified personnel.
Important
The communication board is sensitive to electro-static discharge, implement ESD prevention measures when managing any
communication board.
Note
1. The specified upstream breakers are required to obtain the conditional short circuit current rating, Icc at 20kA symmetrical rms.
Select the breakers in compliance with voltage of 415V, current of 1250A and breaking of 85kA. The specified upstream breakers
should comply with an EN 60947 series standard.
2. The specified upstream fuses are required to obtain the conditional short circuit current rating, Icc at 65kA symmetrical rms.
Select the fuses in compliance with voltage of 690V, current of 2000A and breaking of 200kA. The specified upstream breakers
should comply with an IEC 60269 series standard.
Warning
The power cables must be routed in the metal cable trough in order to avoid cable damage and reduce the electromagnetic
radiation.
Warning
1. The IS-UNITY-DP card, IS-UNITY-LIFE card, SIC card and IS-Relay card must be connected to the SELV, otherwise it may
damage the cards or cause safety risk.
2. The cables of IS-UNITY-DP card, IS-UNITY-LIFE card, SIC card and IS-Relay card connecting the external device must be the
metal wire shielded cables, and the cable connecting the UPS must be reliably connected to the enclosure.
The Manual Describes The Equipment
Product Model
250kVA APM 0250kTK16FN01000
Revision Information
V1.0 (September 26, 2017)
Initial release.
V1.1 (November 27, 2017)

Update related information about Vertiv.
V1.2 (July 10, 2018)

Update Chapter 4 and Chapter 5.
V1.3 (September 4, 2018)

Update Table 8-1.
V1.4 (December 25, 2018)

Change part of information.
V1.5 (April 19, 2019)

Add Figure 8-13; delete original Sections 6.10 and 8.2.10; update Table 8-1.
V1.6 (August 16, 2019)

Update images in Chapter 4; update Figure 7-8.
V1.7 (October 10, 2019)

Update Table 11-3.
Contents
Chapter 1 Overview .................................................................................................................................................................................1
1.1 Features .....................................................................................................................................................................................1

1.2 Design Concept ..........................................................................................................................................................................1
1.2.1 System Design................................................................... 1
1.2.2 Bypass ....................................................................... 2
1.2.3 System Control Principle ............................................................ 2
1.2.4 UPS Power Supply Switch Configuration.................................................. 3
1.2.5 Battery Circuit Breaker (BCB)......................................................... 4
1.3 Parallel System...........................................................................................................................................................................4

1.3.1 Parallel System Features ............................................................ 4
1.3.2 Parallel System Requirements ........................................................ 4
1.4 Operation Modes........................................................................................................................................................................4

1.5 Battery Management ..................................................................................................................................................................7
1.5.1 Normal Function ................................................................. 7
1.5.2 Advanced Function ............................................................... 8
1.5.3 Battery Temperature Compensation .................................................... 8
1.6 Battery Protection......................................................................................................................................................................8
Chapter 2 Mechanical Installation...........................................................................................................................................................9
2.1 Precautions ................................................................................................................................................................................9

2.2 Transportation...........................................................................................................................................................................9
2.3 Tools .......................................................................................................................................................................................10
2.4 Unpacking ...............................................................................................................................................................................11
2.5 Initial Inspection ......................................................................................................................................................................13
2.6 Environmental Requirement.....................................................................................................................................................13
2.6.1 Selection Of UPS Location .......................................................... 13
2.6.2 Selection Of Battery Location ....................................................... 14
2.6.3 Storage ...................................................................... 14
2.7 Mechanical Requirement ..........................................................................................................................................................14

2.7.1 Composition ................................................................... 14
2.7.2 Moving Cabinet ................................................................ 15
2.7.3 Clearance .................................................................... 15
2.7.4 Cable Access Mode .............................................................. 15
2.7.5 Installing And Removing Power Modules ................................................ 16

2.8 Installation Drawings ...............................................................................................................................................................17
Chapter 3 Electrical Installation ............................................................................................................................................................18
3.1 Wiring Of Power Cable .............................................................................................................................................................18

3.1.1 System Configuration ............................................................. 18
3.1.2 Maximum Steady State AC And DC Currents .............................................. 18
3.1.3 Recommended CSA Of Single Module Cable .............................................. 18
3.1.4 Selection Of UPS I/O Switch......................................................... 19
3.1.5 Distance Between The UPS Connection Point And The Floor .................................... 19
3.1.6 Notes ....................................................................... 19
3.1.7 Power Cable Connecting Terminal ..................................................... 19
3.1.8 Protection Ground ............................................................... 19
3.1.9 External Protective Device ......................................................... 19
3.1.10 Power Cable Connection Steps ...................................................... 21
3.2 Wiring Of Signal Cable .............................................................................................................................................................24

3.2.1 Overview ..................................................................... 24
3.2.2 Dry Contact Port J21 ............................................................. 25
3.2.5 Dry Contact Ports J23 ~ J25 ........................................................ 27
3.2.6 REPO Port .................................................................... 28
3.2.7 RS232 Communication Port ......................................................... 28
3.2.8 Parallel And LBS Communication Ports ................................................. 28
3.2.9 Intellislot Port ................................................................. 28
3.2.10 Signal Cable Connection Steps ...................................................... 29
Chapter 4 Operator Control And Display Panel ....................................................................................................................................31
4.1 Introduction .............................................................................................................................................................................31

4.2 Navigating Through The Liebert APM Touchscreen Control Panel ..........................................................................................32
4.2.1 Access Level Log-In .............................................................. 32
4.2.2 Liebert APM Touchscreen Control Panel Components ........................................ 33
4.3 Operation ................................................................................................................................................................................37

4.3.1 Log In To The Liebert APM Touchscreen Control Panel ....................................... 37
4.3.2 Customizing The Display .......................................................... 38
4.3.3 Operator Controls ............................................................... 43
4.4 Viewing UPS Status .................................................................................................................................................................47

4.4.1 Viewing UPS Data With The Status Gauge ............................................... 48
4.4.2 Viewing UPS Data With The Status Panel ................................................ 51
4.4.3 Logs Alarms And Events ......................................................... 55
4.5 Viewing UPS Component Status ..............................................................................................................................................56

4.6 Status Bar Component ............................................................................................................................................................58
4.6.1 Status Bar Messages ............................................................. 58
4.7 Alarm List ................................................................................................................................................................................61
Chapter 5 UPS Operation Introduction .................................................................................................................................................64
5.1 Brief Introduction .....................................................................................................................................................................64

5.1.1 Precautions ................................................................... 64
5.1.2 Power Switch .................................................................. 64
5.2 UPS Startup Procedures ..........................................................................................................................................................65

5.2.1 Startup Procedures In Normal Mode ................................................... 65
5.2.2 Startup Procedures In ECO Mode ..................................................... 67
5.3 Procedures For Transfer Between Operation Modes ................................................................................................................68

5.3.1 Transfer From Normal Mode To Battery Mode ............................................. 68
5.3.2 Transfer From Normal Mode To Bypass Mode ............................................. 68
5.3.3 Transfer From Bypass Mode To Normal Mode ............................................. 69
5.3.4 Transfer From Normal Mode To Maintenance Mode ......................................... 69
5.3.5 Transfer From Maintenance Mode To Normal Mode ......................................... 70
5.4 Battery Test Procedures..........................................................................................................................................................70

5.5 UPS Shutdown Procedures ......................................................................................................................................................71
5.5.1 Procedures For Completely Powering Down UPS ........................................... 71
5.5.2 Procedures For Completely Powering Down UPS While Maintaining Power To Load ..................... 72
5.6 EPO Procedures.......................................................................................................................................................................72

5.7 UPS Reset Procedures After EPO.............................................................................................................................................72
5.8 Automatic Restart ...................................................................................................................................................................73
5.9 Selecting Language .................................................................................................................................................................73
5.10 Changing Current Date And Time ..........................................................................................................................................73
5.11 Control Password....................................................................................................................................................................74
Chapter 6 Battery ..................................................................................................................................................................................75
6.1 Introduction .............................................................................................................................................................................75

6.2 Safety ......................................................................................................................................................................................75
6.3 UPS Battery .............................................................................................................................................................................77
6.4 Precautions For Installation Design .........................................................................................................................................77
6.5 Battery Installation Environment And Number Of Batteries .....................................................................................................78
6.5.1 Installation Environment ........................................................... 78
6.5.2 Number Of Batteries ............................................................. 78

6.6 Battery Protection ...................................................................................................................................................................79
6.7 Battery Installation And Connection ........................................................................................................................................79
6.7.1 Battery Installation .............................................................. 79
6.7.2 Battery Connection .............................................................. 79
6.8 Design Of Battery Room ..........................................................................................................................................................80

6.9 BCB Cabinet (Optional) ...........................................................................................................................................................81
6.10 Battery Temperature Sensor (Optional) .................................................................................................................................82
6.11 Battery Ground Fault Detector (Optional) ...............................................................................................................................83
6.12 BCB Reference Current And Connection ................................................................................................................................84
6.13 Battery Maintenance ..............................................................................................................................................................85
6.14 Disposal Of Used Battery .......................................................................................................................................................85
Chapter 7 Parallel System And LBS System .........................................................................................................................................86
7.1 General.....................................................................................................................................................................................86
7.2 System Installation Procedures................................................................................................................................................86
7.2.1 Preliminary Checks .............................................................. 86
7.2.2 Cabinet Installation .............................................................. 86
7.2.4 Power Cable................................................................... 87
7.2.5 Parallel Cable .................................................................. 87
7.2.6 Remote EPO ................................................................... 88
7.3 Operation Procedures For Parallel System ...............................................................................................................................89

7.3.1 Startup Procedures In Normal Mode ................................................... 89
7.3.2 Maintenance Bypass Procedures ..................................................... 90
7.3.3 Procedures For Isolating One UPS Module From Parallel System ................................. 92
7.3.4 Procedures For Inserting One Isolated UPS Module In Parallel System ............................. 92
7.3.5 Procedures For Completely Powering Down UPS ........................................... 92
7.3.6 Procedures For Complete UPS Shutdown While Maintaining Power To Load ......................... 93
7.4 LBS System .............................................................................................................................................................................93

7.4.1 Cabinet Installation .............................................................. 93
7.4.3 Power Cable................................................................... 94
7.4.4 LBS Cable .................................................................... 94
7.5 LBS Adapter ............................................................................................................................................................................95
Chapter 8 Options .................................................................................................................................................................................96
8.1 Option List ...............................................................................................................................................................................96

8.2 Option Introduction .................................................................................................................................................................96
8.2.1 Battery Temperature Sensor Assembly ................................................. 96
8.2.2 Battery Ground Fault Assembly ...................................................... 97
8.2.3 Seismic Anchor Assembly .......................................................... 97
8.2.4 IS-UNITY-DP Card............................................................... 98
8.2.5 IS-UNITY-LIFE Card .............................................................. 98
8.2.6 SIC Card ..................................................................... 98
8.2.7 IS-Relay Card ................................................................. 100
8.2.8 LBS Adapter ................................................................. 101
8.2.9 BCB Box .................................................................... 103
8.2.10 LBS Cable .................................................................. 103
8.2.11 LBS Assembly ................................................................ 103
8.2.12 Common Input Assembly ......................................................... 103
8.2.13 Lightning Proof Assembly ........................................................ 103
8.2.14 Bypass Load Sharing Inductor Assembly ............................................... 104
8.2.15 Top Fan Assembly ............................................................. 104
8.2.16 Parallel Cable ................................................................ 105
Chapter 9 Communication ..................................................................................................................................................................106
9.1 SNMP Protocol Communication..............................................................................................................................................106

9.2 Modbus Protocol Communication ..........................................................................................................................................106
9.3 Dry Contact Communication ..................................................................................................................................................106
9.3.1 Communication Through IS-Relay Card ................................................ 106
9.3.2 Communication Through Dry Contact Port .............................................. 106
Chapter 10 Service And Maintenance .................................................................................................................................................108
10.1 Safety ...................................................................................................................................................................................108

10.2 Service Procedures Of Power Module And Bypass Power Module ........................................................................................108
10.2.1 Notes...................................................................... 108
10.2.2 Service Procedures Of Power Module ................................................. 108
10.2.3 Service Procedures Of Bypass Power Module ............................................ 109
10.3 Key Components And Service Life Of UPS ...........................................................................................................................109

10.3.1 Life Parameters And The Proposed Replacement Time Of Key Components ........................ 109
10.3.2 Replacement Of Air Filter......................................................... 109
10.4 Maintenance Of UPS And Options ........................................................................................................................................110
Chapter 11 Specifications ....................................................................................................................................................................111
11.1 Conformance And Standards .................................................................................................................................................111

11.2 Environmental Characteristics ..............................................................................................................................................111
11.3 Mechanical Characteristics ...................................................................................................................................................111
11.4 Electrical Characteristics (Input Rectifier) ............................................................................................................................112
11.5 Electrical Characteristics (Intermediate DC Circuit) ..............................................................................................................112
11.6 Electrical Characteristics (Inverter Output) ..........................................................................................................................113
11.7 Electrical Characteristics (Bypass Input) ..............................................................................................................................113
11.8 Efficiency And Loss ..............................................................................................................................................................113
Appendix 1 Glossary ............................................................................................................................................................................114
Appendix 2 Hazardous Substances And Content ...............................................................................................................................115

Chapter 1 Overview 1
输入输出
Chapter 1 Overview
维修旁路开关Q3 维修旁路
This chapter briefly introduces the features, design concept, parallel system, operation mode, battery management and
battery protection of the Liebert APM 250kVA UPS (UPS for short).
旁路输入
1.1 Features 旁路输入开关Q2
The UPS is connected between

整流器
a critical load (e.g. a 逆变器
computer) and输出继电器
mains power to provide high quality power for the loads.
The
市电输入
UPS has the following advantages:
UPS输出
⚫ Augment power quality
主路输入开关Q1
The UPS protects its output against the input power change through the intelligent controller.
⚫ Provide mains failure protection
If the input power fails, the UPS will work in battery mode, and the power supply to the loads will not be interrupted.
⚫ Convenient installation and maintenance
With system modular design,
电池 the power电池充电器
module and bypass power module are hot swappable. The system supports on-line
replacement for convenient maintenance, and the power module and bypass power module can be replaced within five
minutes.
1.2 Design Concept
1.2.1 System Design

nguyên tắc
This section introduces the working principle of the UPS single module. The UPS adopts AC-DC-AC converter (as shown in
Figure 1-1). The first stage conversion (AC-DC) adopts three-phase high frequency rectifier to convert the three-phase input
voltage into stable DC bus voltage.
Input Output
Maintenance bypass switch Maintenance bypass

Static switch
Bypass input
Bypass input switch
Rectifier Inverter Inverter switch

Mains input UPS output
Rectifier input switch Output switch
Battery Battery charger

Figure 1-1 Block diagram for working principle of UPS single module
The UPS has its own battery charger and adopts advanced temperature compensation technology to effectively prolong the
battery service life. The inverter mainly adopts large power IGBT, and adopts advanced SVPWM technology for control so as
to invert the DC bus voltage back to AC voltage.
Liebert APM 250kVA UPS User Manual

2 Chapter 1 Overview
When the mains is normal, the rectifier and inverter work together to supply the loads and charge the battery.
When the mains is abnormal, the rectifier stops working, and the battery supplies power to the loads through the inverter. If
điện áp có thể xả the battery voltage falls to end of discharge (EOD) voltage and the mains still has not been recovered, the UPS will shut
down (if the system uses split bypass configuration and the bypass is normal, the system will transfer to bypass). The
battery EOD voltage is preset. When the mains is abnormal, the battery maintains the UPS operation till the battery voltage
is reduced to EOD voltage and the UPS shuts down, this time is called 'Backup Time'. The length of backup time depends on
the battery capacity and the loads. thời gian dự phòng
1.2.2 Bypass
Through the intelligent control of the Static Switch module (as shown in Figure 1-1) containing the controllable electronic
switch, the loads can be supplied by the inverter or the bypass. In normal situation, the loads are supplied by the inverter, in
which case the automatic inverter switch at inverter side is closed. In the case of overload (the overload delay time expires)
or inverter failure, the automatic inverter switch is opened, and the Static Switch module will automatically transfer the loads
to the bypass.
In normal operating state, to realize the uninterrupted transfer between inverter and bypass, the inverter output must be
synchronized with the bypass.
Therefore, when the bypass frequency is within the synchronization range, the inverter control circuit will synchronize the
inverter output frequency with the bypass frequency and phase.
Besides, the UPS has a manual maintenance bypass switch for shutdown of the UPS upon maintenance. In this situation, the
bypass will directly supply the critical loads through the maintenance bypass.
Note
When the load is supplied by the bypass or maintenance bypass, the quality of the power supply is not guaranteed.
1.2.3 System Control Principle
Normal operation
Normal mode: It means that the UPS has normal input mains, the rectifier and inverter operate normally, the load is supplied
by the inverter, the battery circuit breaker is closed, and the battery is in stable floating charge state.
Mains abnormal
When the mains fails or is abnormal, the rectifier will stop working automatically, and the system will transfer to battery
output (through inverter). The length of the operation time in battery mode depends on the load and the battery capacity.
During this period, if the battery voltage falls to the EOD voltage and the mains still has not been recovered, the inverter will
stop working automatically, and the UPS touch screen will display corresponding alarm messages. If the system uses split
bypass configuration and the bypass is normal, the system will transfer to bypass.
Mains recovery
khôi phục
When the mains resumes normal within allowable time, the rectifier will start automatically and supply the load and charge
the battery again. Therefore, the power supply to the load will not be interrupted.
Battery disconnection
công tắc cách li bên ngoài
To disconnect the external battery from the UPS system for maintenance, use the external isolating switch. At this time,
except for the battery backup function upon mains failure, other functions and all the steady state performance of the UPS
will not be affected.
UPS module failure
In case of inverter failure, output fuse blowout and bypass STS failure, the load will automatically transfer to the bypass. In
this situation, please contact the local customer service center of Vertiv Tech Co., Ltd for technical support.
Overload
If the inverter is overloaded or the inverter current remains outside the specifications (refer to Table 11-6) longer than the
specified time, the load will automatically transfer to the bypass without power interruption. If both the overload and the

nếu quá tải, quá thông số biến tần tải tự chuyển qua bypass và sau khi hết sẽ quay lại bt, khi ngắn mạch tải sẽ tự chuyển sang bypass bộ
dc/ac ngừng lv, 5p sau nó tự lv lại, bộ dc/ac được bv đầu tiên bởi tinh năng hệ thống và hiển thị cảnh báo lỗi
current are reduced to a level within the specified range, then the load will be transferred back to the inverter. In case of
output short circuit, the load will be transferred to the bypass, and the inverter will shut down. Five minutes later, the inverter
will start up automatically. If the short circuit is removed at this point, the load will be transferred back to the inverter. The
transfer is determined first of all by the features of the protective device of the system.
In the above two situations, the UPS touch screen will display alarm messages.
Maintenance bypass
The UPS has a second bypass circuit, i.e. maintenance bypass, which provides a safe working environment for the engineers
to provide regular maintenance or repair to the UPS system and at the same time provide unregulated mains supply to the
loads. The maintenance bypass can be manually selected through the maintenance bypass switch, and it can be
disconnected by turning the switch to OFF.
1.2.4 UPS Power Supply Switch Configuration
The UPS has four switches: rectifier input switch Q1, bypass input switch Q2, maintenance bypass switch Q3, and output
switch Q5. Note that switches Q1, Q2, and Q5 are optional.
If the user configures the switches at upstream and downstream of the UPS, the UPS has no need to configure switch option.
The I/O fuse requirement is configured according to a certain industry standard. Therefore, the switch and I/O fuse get four
modes: with switch and fuse, with switch but no fuse, no switch but with fuse, no switch or fuse.
Note
If no switch is configured for the UPS, the user should install an external switch (4P) at upstream and downstream of the UPS.
Figure 1-2 describes the block diagram of the UPS module. The UPS has split bypass configuration (that is, the bypass
adopts independent mains input) and common input configuration. In split bypass configuration, the static bypass and
maintenance bypass share the same independent bypass power supply. Where a separate power source is not available, the
input supply connections of the bypass input switch (Q2) and rectifier input switch (Q1) would be linked together (split
bypass configuration for delivery) to make the bypass input and rectifier input use mains power of the same route.
During the normal operation of the UPS, except for the maintenance bypass switch Q3, other switches shall be closed.
khi không có nguồn đầu vào riêng biệt thì sử dụng nguồn chung khoá Q1, Q2 kết nối với nhau
UPS
UPS
旁路电源 Maintenance bypass switch Q3

维修旁路开关Q3 Static
静态开关 switch
Bypass input
Bypass input switch Q2

旁路输入开关Q2
Shorting主旁同源
copper
短接铜排 Inverter Output
bar of input 输出开关
configuration Rectifier
整流器逆变器
Inverter switch switch
逆变自动开关 Q5 Q5
DC bus
直流母线
Rectifier
主路输入开关Q1 input
Mains
输入市电 input UPS output
UPS输出
switch Q1
充电器
Charger
Neutral line input

输入N线
Battery
电池 BCB
电池开关
Note: Q1, Q2 and Q5 are optional while Q3 is standard

注：主路输入开关Q1、旁路输入开关Q2、输出开关Q5为选配，维修旁路开关Q3为标配。
Figure 1-2 UPS power supply switch configuration
Note: The mains input and bypass input share the same neutral line.
The user can achieve maintenance mode through connecting the external maintenance switch of the single module.

1.2.5 Battery Circuit Breaker (BCB) BCB được đóng thủ công và khi hệ thống lỗi hoặc quá tải thì UPS gửi tín hiệu để cắt BCB
The external battery shall be connected to the UPS through the BCB. The BCB cabinet is mandatory, which shall be installed
thủ công
near the battery. The BCB is closed manually. The BCB has a shunt tripping coil. When the system is faulty and the switches
are needed to be disconnected, the UPS control circuit will send a signal to the shunt tripping coil so as to trip the BCB. It
also has a magnetic trip facility for overload protection.
1.3 Parallel System hệ thống song song

tối đa 4 modul
Up to four UPS modules can be parallel-connected to form a parallel system to increase the system capacity and reliability.
The load is equally shared between the paralleled UPS modules.
Moreover, two UPS modules or parallel system can comprise a dual bus system. Each parallel system has independent
output. Output synchronization is achieved through the LBS cable or LBS device, thus enabling seamless load transfer
between the two parallel systems or single modules through the STS device.
1.3.1 Parallel System Features

hệ thống song song chia tải cho nhau còn phần cứng và phần mềm hệ thống vẫn như hệ thống đơn
1. Except for the load sharing inductor assembly and parallel communication cables, the hardware and software of parallel
system are completely the same as those of the single module. The parallel system configuration is achieved through
settings in configuration software.
cáp được kết nối thành vòng cung cấp độ tin cậy và dự phòng
2. Parallel cables are connected in a ring, providing both system reliability and redundancy.
3. The total load of the parallel system can be queried from each UPS module's TOUCH SCREEN.
tải được giám sát ở màn hình UPs
1.3.2 Parallel System Requirements
A group of paralleled modules behave as if it were one large UPS with the advantage of presenting higher reliability. To
ensure that all modules are equally utilised and to comply with relevant wiring rules, the following requirements apply:
1. All UPS modules must be the same series, and connect to the same bypass source.
2. The bypass and rectifier input sources must be connected to the same neutral line input terminal.
3. Any RCD, if installed, must be of an appropriate setting and located upstream of the common neutral line input terminal.
Alternatively, the device must monitor the protective earth current of the system. Refer to Warning: high earth leakage
current before Contents.
4. For parallel system consists of two or more UPS modules, the bypass load sharing inductors (optional) should be selected.
1.4 Operation Modes

The UPS has the following operation modes:
⚫ Normal mode
⚫ Battery mode
⚫ Automatic restart mode
⚫ Bypass mode
⚫ Maintenance mode
⚫ ECO mode
⚫ Frequency converter mode
⚫ Intelligent parallel mode
⚫ Intelligent parallel demo mode
⚫ LBS mode
Normal mode
As shown in Figure 1-3, the mains is rectified by the UPS rectifier and then inverted by the inverter to supply uninterrupted
AC power to the loads. At the same time, the charger will charge the battery.



Figure 1-3 Schematic diagram of normal mode
Battery mode
As shown in Figure 1-4, the operation mode in which the battery provides backup power supply to the loads through the
rectifier and inverter is called battery mode. Upon mains failure, the system will automatically transfer to the battery mode
with no load power interruption. When the mains is recovered, the system will automatically transfer back to the normal
mode without any manual intervention, and the power to the load will not be interrupted.
sự can thiệp thủ công
UPS output
Output switch
Battery
Figure 1-4 Schematic diagram of battery mode
UPS có chức năng tự khởi động lại sau khi bị shut down và sau 1 khoảng tg sau khi nguồn chính khôi
Automatic restart mode phục lại. UPS sẽ nạp lại cho acquy, nếu UPS không thể tự restart thì ta phải khởi động lại bằng tay, nhấn
RESET_FAULT sau đó nhân INVERTER ON
The UPS has automatic restart function. When the inverter shuts down because the mains fails and the battery discharges
to EOD voltage, if the mains is recovered, the UPS will restart automatically after a certain time of delay. This function and
the automatic restart type can be set by the service engineer authorized by Vertiv.
During the process of automatic restart time of delay, the UPS will charge the battery to protect against the power-off risk of
the load device caused by mains power failure.
If the automatic restart function has not been set, the user can manually start the UPS through pressing the RESET FAULT
key first and INVERTER ON key next.
Bypass mode đề phòng khi bộ AC?DC quá tải hoặc sự cố thì bộ static switch sẽ chuyển tải qua cấp bởi bypass side để không gián đoạn
phụ tải, nếu inverter và bypass không được đồng bộ thì công suất có thể bị gián đoạn với t<20ms
As shown in Figure 1-5, in normal mode, in case of an inverter failure, an inverter overload or an inverter manual shutdown,
the static switch will transfer the load from the inverter side to bypass side, with no interruption in power to the load. At this
time, if the inverter and bypass are not synchronized, the power of the load has transitory interruption, with time of less than
20ms.
Static switch
Bypass input UPS output
Bypass input switch Output switch
Figure 1-5 Schematic diagram of bypass mode
Maintenance mode
As shown in Figure 1-6, if the UPS maintenance or service is required, you may use the manual maintenance bypass switch
to transfer the load to maintenance bypass, with no interruption in power to the load. This maintenance bypass switch is
fitted in all UPS modules and rated for full load of a single module.

Maintenance bypass switch Maintenance bypass
Bypass input UPS output
Figure 1-6 Schematic diagram of maintenance mode
ECO mode ở chế độ này tất cả khoá đóng trừ khoá maintainance và bypass phải cung cấp điện áp và tần số trong khoảng cho phép, nếu quá thì
hệ thống sẽ chuyển qua để cho bộ DC/AC cung cấp ( cung cấp cả 2 nguồn, giảm tổn thất)
If ECO mode is selected, all power switches and the battery switches are closed except for the maintenance bypass switch,
and the system prefers to put the load on the bypass, to achieve the aim of energy-saving. When the bypass supply is within
the range of normal frequency and normal voltage (adjustable), the load is powered by the bypass, with the inverter on
stand-by; when the voltage and/or frequency of the bypass supply are beyond the pre-defined and adjustable limits, the
system will transfer to the inverter output. In this mode, the system can normally charge the battery.
Static switch
Bypass input
Bypass input switch


Figure 1-7 Schematic diagram of ECO mode
If ECO mode is required, adjust corresponding parameters through the touch screen.
The operation method of ECO mode is the same as the description in Chapter 5 UPS Operation Introduction. However, in
normal mode, the load is powered by the bypass, the inverter indicator is flashing, and the touch screen displays 'Bypass
mode'.
Warning
In ECO mode, the load is not protected against mains distortion. ở chế độ này phụ tải không được bảo vệ bởi các biến dạng về nguồn điện
Frequency converter mode tần số đầu ra ổn định 50hoặc 60hz khi tần số đầu vào ở 40 -70hz. không cho bypass switch làm việc
The UPS can be programmed into frequency converter mode for either 50Hz or 60Hz stable output frequency. The input
frequency may vary from 40Hz to 70Hz. Under this mode, it is required to open the maintenance bypass switch to disable
the static bypass operation, and the battery becomes optional depending on any requirement to operate in battery mode.
The frequency converter mode can be set by the service engineer through the setting software.
Chế độ song song thông minh còn được gọi là chế độ ngủ đông, được thiết kế để tối đa hóa số lượng không
Intelligent parallel mode hoạt độngmodule nguồn mà vẫn đảm bảo công suất tải, mang lại hiệu quả cao nhất cho hệ thống. Modun
nguồn phải đánh số từ 1 đến n
The intelligent parallel mode is also called Dormancy mode, which is designed to maximize the number of the dormant
power modules while ensuring load power, which brings the system efficiency to the greatest extent. The intelligent parallel
mode is configured by the service engineer through the setting software. This mode has the following restrictions on the
power module addresses: When there are 'n' power modules, module
addresses should be 1, 2 'n' in turn; when there are 5 power modules, the power module addresses should be from 1 to 5 in
turn. In parallel system, enable this mode for each UPS one by one (Refer to Section 4.2.4).
Note
tránh thay đổi tải đột ngột, vì UPS có thể chuyển qua chế độ bypass
Under intelligent parallel mode, sudden load change should be avoided, which may cause UPS transfer to bypass mode.

Intelligent parallel demo mode

This mode is used to demonstrate the intelligent parallel mode. Under this mode, the rack or module goes to dormancy
circularly, and the cycle period can be set. The intelligent parallel demo mode needs to be set by service engineer through
setting software
LBS mode có độ tin cậy cao, áp dụng cho tải có nhiều đầu vào
hệ thống kép như nhau
A dual bus system consists of two independent UPS systems, each containing one or more parallel UPS modules. The dual
bus system has high reliability and is applicable to the load with multiple inputs. For single-input load, an STS can be
installed to power the load. For the operation principle diagram of the LBS mode, see Figure 7-7.
1.5 Battery Management

The following battery management functions are set by the service engineer through the Vertiv setting software.
1.5.1 Normal Function
1. Constant current boost charge sạc với dòng điện không đổi
Adopt the constant current (within battery charging limit) to charge the battery. The function can be used for battery
capacity fast recovery. The charge current can be set.
2. Constant voltage boost charge sạc với điện áp không đổi
Adopt the constant voltage to charge battery. The function can be used for battery capacity fast recovery. For VRLA
batteries, the maximum boost charge voltage should not exceed 2.4V/cell.
3. Float charge sạc thực tế
The charging method is used for keeping battery with a full capacity. The float charge voltage is generally low. The function
can balance the capacity loss due to battery self discharging, and can be used for battery capacity recovery.
For VRLA batteries, the float charge voltage should be between 2.2V/cell and 2.3V/cell.
4. Automatic transfer to float charge tự động chuyển sang sạc thực
When the charge current is less than 'Threshold of Equalize Charge to Float Charge' or 0.5A, the charger will automatically
transfer from boost charge to float charge. When boost charge time exceeds the limit of 'Equalize Charge Protect Time
Limit', the charger will be forcibly transferred to float charge for protecting the battery.
5. Float charge temperature compensation (optional) sạc có bù nhiệt độ
This function must be used together with the battery temperature detection device. The Vertiv battery temperature sensor
is a standard option for your selection.
6. EOD protection bảo vệ pin dưới mức xả
When the battery voltage drops to the EOD voltage, the battery converter shuts down automatically and the battery is
inhibited to avoid further battery discharge. The EOD voltage is settable from 1.60V/cell to 1.90V/cell (VRLA).
7. Battery low pre-warning time cảnh báo mức pin thấp
The battery low pre-warning time is adjustable between 3min and 60min. The default setting is 5min.
8. Maximum battery discharge time thời gian sạc tối đa
When the battery has small current discharge for a long time, the battery is over discharged and even has unrecoverable
damage, thus setting a battery discharge time to protect the battery is essential. The limit of time setting shall be configured
by service engineer through the Vertiv setting software.
9. Maximum boost charge protection time bảo vệ thời gian sạc tăng cường tối đa
To protect against the battery overcharge damage caused by long time boost charge, a protect time setting is essential. The
limit of time setting shall be configured by service engineer through the Vertiv setting software.

1.5.2 Advanced Function chức năng kiểm tra pin định kì

chức năng xả pin định kì, khi tải trên 20% công suất UPS thì pin tự xả, còn nếu thấp hơn sẽ ko xả
The UPS provides battery maintenance test function. At periodic intervals, 20% of the rated capacity of the battery will be
discharged automatically, and the actual three-phase load must exceed 20% of the nominal UPS capacity. If the load is less
than 20%, the automatic discharge cannot be executed. The periodic interval can be set from 30 to 360 days. The battery
maintenance test function can be disabled through the Vertiv setting software.
Conditions: Battery at float charge for at least 5h, load equal to 20% ~ 100% of rated UPS capacity.
Trigger: Automatically, or manually through the command of battery maintenance test in touch screen.
Interval: 30 ~ 360 days (default setting: 60 days).
The UPS also provides battery capacity self-test function: Periodically test the battery activity, test the battery residual
capacity, judge the battery quality, and then provide corresponding measures. The capacity self-test is started by the user
through the touch screen. During the capacity self-test, the battery will continuously discharge to the battery undervoltage
shutdown threshold. After the self-test is finished, the system will update the battery curve table. The capacity self-test
command is valid only one time, without any memory. During the capacity self-test, if the battery maintenance requirement
is satisfied, the system will generate audible/visual alarm and give corresponding records.
Conditions: System load rate within 20% ~ 100%, battery float charge at least 5h, and generator not connected; the current
system is in float charge state.
Trigger: Start up through the touch screen.
Note:
1. The battery will continuously discharge to the battery undervoltage shutdown threshold, then the battery transfer to the
charging state. When the capacity self-test is finished, the system will update the battery curve table.
2. The user can manually stop the capacity self-test operation through the touch screen.
1.5.3 Battery Temperature Compensation
The UPS system has battery charge temperature compensation function. When the ambient temperature is increased, the
DC bus voltage (which charges the battery) will be reduced correspondingly to provide optimal charging voltage for the
battery, thus prolonging the battery service life time.
This function must be used together with the Vertiv battery temperature detection device (a standard option).
1.6 Battery Protection

The following battery protection functions are set by the service engineer through the Vertiv setting software.
Battery low pre-warning
The battery low pre-warning occurs before the EOD. After this pre-warning, the battery should have the capacity for three
remaining minutes discharging with full load. The time can be configured from 3min to 60min.
EOD protection
When the battery voltage drops to the EOD voltage, the battery converter shuts down automatically. For VRLA batteries, the
EOD voltage is adjustable from 1.60V/cell to 1.90V/cell (VRLA).
BCB alarm
The BCB alarm occurs when the external BCB opens, if you select the Vertiv BCB (optional).
The external battery connects to the UPS through the BCB. The BCB is manually closed and tripped by the UPS control
circuit.

Chapter 2 Mechanical Installation 9
Chapter 2 Mechanical Installation
This chapter briefly introduces the mechanical installation of the UPS, including the precautions, initial inspection before
installation, environmental requirement, mechanical requirement and installation diagram.
2.1 Precautions
This chapter describes the environmental and mechanical requirements and mechanical considerations that must be taken
into account when planning the positioning and cabling of the UPS equipment.
Because each site has its particular characteristics, this chapter does not provide the detailed installation steps, it only acts
as a guide for the general procedures and practices that should be observed by the installing engineer, so that they can
properly handle the specific situation of the site.
Warning: professional installation required
1. Do not disassemble the package without permission of authorized service engineer.

2. The UPS should be installed by an authorized engineer in accordance with the information contained in this chapter.
Warning
1. The UPS system can connect to the power system (i.e., IT system) whose neutral point is not earthed.
2. The UPS can be connected to TN and TT AC distribution systems (IEC60364-3) of 3-phase 5-wire (A, B, C, N, PE).
Warning: battery danger
Take special care when installing batteries. When connecting batteries, the battery terminal voltage will reach 320Vdc, which is fatal to
human being.
1. Please wear safety glasses to protect the eyes from being damaged by arc.
2. Remove all the metal items, including finger rings, watch, etc.
3. Use tools with insulated handle.
4. Wear rubber gloves.
5. If the battery has electrolyte leakage or the battery is damaged, it must be replaced. Place the battery into the container that can
withstand sulfuric acid and dispose of it according to the local regulations.
6. If the skin contacts the electrolyte, flush it with water immediately.
2.2 Transportation
Note
The center of gravity of the UPS cabinet is not centered; avoid falling over during the cabinet movement by forklift.
Railroad transportation and shipping are the recommended means of transportation. If truck transportation is unavoidable,
choose roads that are less bumpy in order to protect the equipment.
The UPS cabinet is heavy (see Table 11-3 for the weight). It is recommended to use mechanical equipment such as an
electric forklift to unload and move the equipment to the place closest to the installation site. If an electric forklift is used,
insert the tines of the forklift below the bottom pallet (as shown in Figure 2-1 ) to prevent the equipment from falling over.

10 Chapter 2 Mechanical Installation
Inserting direction
Figure 2-1 Inserting and movement (Cabinet front)
Note
Before removing the packaging, please visually inspect whether the packaging has any transportation damage or anti-dumping label
has color changed. If there is any abnormity, contact Vertiv local service center.
2.3 Tools
Warning
1. For the sake of safety, the installation tools under live operation must be insulated.
2. Tools in Table 2-1 are for reference only; please follow the actual requirement for on-site installation and connection.
Table 2-1 Tools

Name Drawing Name Drawing
Electric hand drill Adjustable wrench
Slotted screwdriver Cross head screwdriver
Stepladder Forklift
Drill Wire cutting plier
Claw hammer Diagonal cutting plier
Insulating shoes Antistatic gloves

Name Drawing Name Drawing
Electrician knife Cable tie
Insulating tape Insulating gloves
Crimping plier Heat shrinkable tube
Insulated torque wrench Torque screwdriver
Multimeter Clip-on ammeter
2.4 Unpacking
Unpack the UPS and battery packages under the guidance of authorized service engineer. Steps:
1. As shown in Figure 2-2, remove the packing belts and honeycomb boards.
Packing belt
Figure 2-2 Removing the packing belts and honeycomb boards

2. Remove the ratguards both front and rear, see Figure 2-3. When the UPS is in position, please note to reinstall the
ratguards.
Liebert APM
Re m ove
ratguard
Figure 2-3 Removing ratguards
3. According to Figure 2-4, remove the fixing bolts at bottom of the cabinet.
Liebert APM
Remove bottom
Remove bottom
fixing bolt
fixing bolt
Figure 2-4 Removing bottom bolts
4. If the cabinet is equipped with the seismic anchors, you should remove them (8 pieces at front and rear) according to
Figure 2-5, then use the forklift to move the cabinet to its installation position.

Liebert APM
FixFixing screws for

ing s crews for
seiseismic
smic ancho r
anchor
Figure 2-5 Removing seismic anchors
2.5 Initial Inspection

Before installing the UPS, carry out the following inspections:
1. Ensure that the environment of the UPS equipment room meets the environmental requirement specified in the product
technical specifications, especially the ambient temperature, ventilation conditions, and the dust situations.
2. Unpack the UPS and battery under the guidance of authorized service engineer. Visually inspect whether the UPS and
battery have any transportation damage. If there is any damage, report to the carrier immediately.
3. Verify the UPS label and confirm the correctness of the UPS. The UPS label is attached on the back of the door. The
model, capacity and main parameters of the UPS are marked on the label.
2.6 Environmental Requirement
2.6.1 Selection Of UPS Location
The UPS should be located in a cool, dry, clean-air indoor environment with adequate ventilation, and should be located on
concrete or other nonflammable and flat surfaces. The ambient environment should be free of conductive powder (such as
metallic powder, sulfide, sulfur dioxide, graphite, carbon fiber, conductive fiber, etc.), acid mist or other conductive media
(strongly ionized substances). The environment specifications should comply with relevant international standard &
specifications and the operating range (see Table 11-2) specified in this manual.
The UPS uses forced cooling by internal fans. Cooling air enters the UPS through the ventilation grills at the front of the
cabinet and exhausted through the ventilation grills at the back of the cabinet. Do not obstruct the ventilation holes
(ventilation grills). The rear of the UPS should be kept a distance at least 500mm from the wall to avoid blocking the UPS
heat dissipation, thus reducing the UPS internal temperature and improving the UPS life.
If necessary, install indoor extractor fans to aid cooling-air flow to avoid room temperature buildup. Air filters (optional)
should be used when the UPS is to operate in a dirty environment.
Note 1: When the battery cabinet is installed near the UPS, the maximum allowable ambient temperature is
dependent on the battery rather than the UPS.

Note 2: If the UPS is working in ECO mode, the power consumption will be less than that in Normal mode. Proper air
conditioning system shall be selected according to the normal operating mode.
2.6.2 Selection Of Battery Location
Batteries generate some amount of hydrogen and oxygen at the end of charge, so the fresh air volume of the battery
installation environment must meet the EN50272-2001 requirements.
The ambient temperature is the main factor that affects the battery capacity and life. The normal operating temperature of
the battery is 20°C. If the ambient temperature is higher than 20°C, the battery life will be reduced. If it is lower than 20°C,
the battery capacity will be reduced. In normal situation, the allowable ambient temperature for the battery is 15°C to 25°C.
The ambient temperature of the battery shall be maintained constant, and the battery shall be kept away from heat source
and air outlet.
Battery can be installed inside the specialized battery cabinet which shall be close to the UPS. If the battery is placed on the
raised floor, bracket shall be installed under the floor, just as for the UPS. If the battery adopts rack mounting or is mounted
far from the UPS with other installation mode, the battery circuit breaker shall be installed near the battery, and the cabling
distance shall be minimized.
2.6.3 Storage
Should the UPS not be installed immediately, it must be stored with the original packaging in a room for protection against
excessive humidity and heat sources (see Table 11-2). The battery needs to be stored in a dry and cool place with good
ventilation. The most suitable storage temperature ranges from 20°C to 25°C.
Warning
During battery storage, periodically charge the battery according to the battery manufacturer instructions.
2.7 Mechanical Requirement
2.7.1 Composition
The 250kVA UPS system contains a 250kVA main power cabinet and a switch cabinet, and provides the options such as
rectifier input switch, bypass input switch, and output switch.

2.7.2 Moving Cabinet
Warning
1. The lifting equipment for moving the UPS cabinet must have enough lift capacity.
2. When removing the UPS from the shipping pallet, pay attention to keeping the UPS from sliding. Ensure that adequate personnel and
lifting equipment are available when removing the shipping pallet.
3. The center of gravity of the UPS cabinet is high; avoid falling over during the cabinet movement.
4. Vertical hanging of cabinet is not allowed.
Ensure that the weight of the UPS does not exceed the capacity of the lifting equipment. For the UPS weight, refer to Table
11-3.
The UPS cabinet can be moved by forklift or other similar lifting equipment.
2.7.3 Clearance
Because the UPS has no grille at the two sides, there is no special clearance requirement on the two sides.
Besides the local regulations, to enable routine tightening of the power terminals within the UPS, it is recommended that
clearance around the front of the UPS should be larger than 1200mm and sufficient to enable free passage of personnel with
the door fully open. If top fan (option) is not configured, maintain at the back of the cabinet a clearance at least 500mm to
permit adequate circulation of air coming out of the UPS. See Figure 2-6.
500
Backwall
955
Top view
613
1200
Front barrier
Figure 2-6 Clearance (unit: mm)
2.7.4 Cable Access Mode
The UPS adopts top cable access method and bottom cable access method.
For further description, refer to 3.1.10 Power Cable Connection Steps and 3.2.10 Signal Cable Connection Steps.

2.7.5 Installing And Removing Power Modules
Note
Install/Uninstall the power modules and output distribution modules from bottom to top to avoid cabinet toppling due to high gravity
center.
See Figure 2-7 for the installation position of the power modules.
Bypass control module
Bypass power module
Power module
Figure 2-7 Installation of power modules
Use the following procedures to install the power modules:

1. Use the DIP switch on the front panel of the module to set the module address. The setting range is from 1 to 5. The
module address should be exclusive. The setting method is shown in Table 2-2.
Table 2-2 DIP switch setting method
DIP switch setting Module address DIP switch setting Module address
1 4
2 5
2. Place the ready switch on the front panel of the module to unready state (the switch is in red).
3. Remove the dummy plate, insert the module in the installation position, and push it into the cabinet.
4. Secure the module onto the cabinet through the fixing holes on both sides of the front panel of the module.
5. Place the ready switch to ready state.

2.8 Installation Drawings

The mechanical installation dimensions are shown in Figure 2-8.
955
1 570
61 3
Top view
990
Liebert APM
2000
1 00
1000
Front view Side view
1000
A(Foot installation hole)
20
13
950
850
A enlarged view
51
51 900
Bottom view
Figure 2-8 Top/front/side/bottom view of the 250kVA UPS (unit: mm)

18 Chapter 3 Electrical Installation
Chapter 3 Electrical Installation
This chapter mainly introduces the electrical installation of the UPS, including the power cable and signal cable connecting
procedures and methods.
After completing the mechanical installation of the UPS, it is necessary to connect the power cable and signal cable of the
UPS. All the signal cables, whether shielded or not, shall be kept away from the power cables.
Warning
1. Do not power on the UPS before the arrival of authorized service engineer.
2. The UPS cables should be routed by an authorized engineer in accordance with the information contained in this chapter.
3.1 Wiring Of Power Cable
3.1.1 System Configuration
The cable size of the system power cable shall meet the following requirements:
UPS input cable
The cable size of the UPS input cable differs with the UPS power ratings and input AC voltages, provided that it meets the
requirement of maximum input current, including the maximum battery charge current, see Table 3-1.
UPS bypass and output cable
The cable size of the UPS bypass and output cable differs with the UPS power rating and output AC voltages, provided that
it meets the requirement of nominal output or bypass current, as shown in Table 3-1.
Battery cable
Each UPS connects to its battery through the three cables connecting to the positive pole, negative pole and neutral line.
The cable size of the battery cable differs with the UPS power ratings, provided that it meets the battery discharge current
requirement when the battery discharges to near EOD voltage, as shown in Table 3-1.
3.1.2 Maximum Steady State AC And DC Currents
The power cable must be selected according to the current and voltage values in Table 3-1 as well as the local wiring
regulations, and take environmental conditions (temperature and physical media) into consideration, then refer to Table 3B
in IEC 60950-1.
Table 3-1 Max. steady state AC and DC currents bu lông
Rated current (A) Bus stud bolt/nut specification
UPS power Output/bypass current 2 Battery discharge 3 Input, battery,
Max. input Recommended
(kVA) at full load current (+, -, N) at min. output,
current1,2 torque (N.m)
380V 400V 415V battery voltage bypass/PE cable
250kVA 498 379 360 348 857 M12 40
1. Max. current of low voltage (176V) for rectifier input at full load.
2. Non-linear load (like switch power) affects the design of output and bypass neutral line.
3. The discharge current at EOD point (voltage is 9.6V) calculated by 38-block battery.
3.1.3 Recommended CSA Of Single Module Cable
The recommended CSA of the single module cable is listed in Table 3-2.

Chapter 3 Electrical Installation 19
Table 3-2 Recommended CSA of the UPS single module cable (unit: mm2, ambient temperature: 25°C)
Model Input Output Bypass I/O neutral line Earth cable Battery
250kVA 2*150 2*150 2*150 2*150 2*120 See Table 6-7
3.1.4 Selection Of UPS I/O Switch
Table 3-3 is the recommended capacity of the UPS I/O switch; the user can select it according to actual needs.
Table 3-3 Selection of the UPS I/O switch
Model Input port Output port
250kVA 500A 400A
3.1.5 Distance Between The UPS Connection Point And The Floor
Table 3-4 Min. distance between UPS connection point and floor
Min. distance（mm）
UPS connection point
250kVA
Rectifier input 380
Bypass input 1030
AC Output 1320
Battery supply (+) 910
Battery supply (-) 820
Input and output battery line N 1360
PE terminal 850
3.1.6 Notes
The following points are for general guidance only. If there are relevant local regulations, the local regulations shall prevail.
1. The cable size of the protective earth cable shall be selected according to the AC power failure level, cable length and
protection type. The grounding wire connection must use the shortest connection route.
2. For the cables with large current, parallel connection of small cables can be adopted to facilitate the installation.
3. When selecting the battery cable size, the current value in Table 3-1 shall be referred to, and a maximum voltage drop of
4Vdc is allowed.
4. To minimize the formation of EMI, do not form coils.
3.1.7 Power Cable Connecting Terminal
The rectifier input, bypass input, output and battery power cables are connected to the corresponding terminals shown in
Figure 3-2.
3.1.8 Protection Ground
The protective earth cable is reliably connected to the PE input terminal (see Figure 3-2) via the fixing bolt. All the cabinets
and cable troughs shall be grounded according to the local regulations. The grounding wires shall be tied up reliably to
prevent the loosening of the grounding wire tightening screws when the grounding wires are pulled.
Warning
Failure to ground as required may cause EMI, electric shock or fire risk.
3.1.9 External Protective Device
To ensure the safety, it is necessary to install external circuit breaker for the input and battery of the UPS. Because of the
difference of the specific installations, this section only provides general practical information for the installation engineer.

The qualified installation engineer should have the knowledge of the local wiring regulations on the equipment to be
installed.
Input power supply of rectifier and bypass
1. Input overcurrent and short circuit protection
Install suitable protective devices in the distribution line of the incoming mains supply. The protective devices should
provide functions such as the overcurrent protection, short circuit protection, isolation protection and tripping upon
backfeed. When selecting the protective devices, consider the power cable current-carrying capacity, system overload
capacity (see Table 11-6 and Table 11-7) and the short circuit capability of the upstream power distribution.
Under the condition of adding external protective devices (use the recommended model or the device with performance
better than recommended model), the UPS can satisfy the requirement of KAIC.
2. Split bypass configuration
If the UPS adopts split bypass configuration, independent protective device shall be installed respectively on the rectifier
input and bypass input distribution lines.
Note
1. The rectifier input and bypass input must use the same neutral line.
2. For IT grid system, 4-pole protective components must be installed for the UPS external input power distribution.

3. Ground fault protection

If the upstream input power supply has an RCD, the transient state and steady state ground leakage current upon the
startup of the UPS shall be considered.
The RCCB shall meet the following requirements:
⚫ Be sensitive to the DC unidirectional pulse (class A) of the whole distribution network
⚫ Be insensitive to transient state current pulse
⚫ Have an average sensitivity which is 0.3A ~ 3A adjustable
The RCCB symbols are shown in Figure 3-1.
Figure 3-1 RCCB symbols
The UPS has an internal EMC filter, therefore the protective earth cable has leakage current which is less than 3000mA. It is
recommended to confirm the RCD sensitivity of the upstream input distribution and the downstream distribution (to the
load).
External battery
The BCB must be installed for protecting the external battery. The UPS provides a mandatory BCB cabinet to provide
overcurrent protection, short circuit protection and automatic tripping functions for the external battery.
This BCB is important for the battery maintenance, and is generally installed near the battery.
System output
The UPS output distribution shall be configured with a protective device. The protective device shall be different from the
input distribution protection switch and able to provide overload protection (refer to Table 11-6 and Table 11-7).
Note
For IT grid system, 4-pole protective components must be installed for the UPS external input power distribution.
3.1.10 Power Cable Connection Steps
For cable access mode of the UPS, refer to 2.7.4 Cable Access Mode.
Connection terminal and cable routing method
Figure 3-2 shows the connection terminals of the UPS power cable. Figure 3-3 and Figure 3-4 show the power cable entry
and routing methods, please refer to the cabling method to route cables and then connect them to corresponding terminals
shown in Figure 3-2.
Note
1. The power cables should be routed through tunnels or cable troughs to avoid cable damage due to mechanical stress and reduce the
EMI.
2. When routing the cables inside the cabinets, it is required to bind and fix the cables to avoid cable damage due to mechanical stress.

N oA oB oC
Output terminal
Bypass input terminal

bA bB bC
PE terminal
BAT+
PE
Battery terminal BAT-
Mains input terminal

Common input kit
mA mB mC
Figure 3-2 Power cable connection terminals of 250kVA

Top cable access
Figure 3-3 Power cables wiring route of 250kVA (top cable access)

Bottom cable access

Figure 3-4 Power cables wiring route of 250kVA (bottom cable access)
Warning
Before cables connection, make sure that all external and internal power switches of the UPS are off, and post necessary warning signs
to prevent inadvertent operation of the switches. Meanwhile, measure the voltages between the UPS terminals and the voltages
between the terminals and the earth.
Refer to Figure 3-2 ~ Figure 3-4, open the front door of the UPS, and remove the protective cover to reveal the power cable
connection terminals (see Figure 3-2). Connect the protective earth cable to the PE input terminal in the cabinet.
Warning
1. The earth cables and neutral line must be connected in accordance with local and national codes of practice.
2. Failure to observe this could result in electric shock or fire risk.
Connection of system input

1. Common input configuration
Connect the AC input cables to the bypass input terminals (bA-bB-bC) in the cabinet, and ensure that the three shorting
cables between the rectifier input terminals (mA-mB-mC) and the bypass input terminals are connected correspondingly.
Connect the input neutral line to the neutral terminal N in the cabinet. Ensure correct phase rotation.
Note that the shorting kit is optional. If the user has ordered it, then the shorting copper bar has been configured before
delivery, and on-site installation is not required. If the user needs on-site installation, please follow Figure 3-2 for the detailed
installation.
Warning
For cables connection of the common input configuration, if the upstream switch trips, then the UPS mains and bypass input will be off.
2. Split bypass configuration (factory default)

Connect the rectifier input cables to the rectifier input terminals (mA-mB-mC) in the cabinet, and connect the bypass input
cables to the bypass input terminals (bA-bB-bC) in the cabinet. Connect the rectifier input neutral line and bypass neutral
line to the neutral terminal N in the cabinet. Ensure correct phase rotation.
Connection of system output
Connect the system output cables between the output terminals (oA-oB-oC-N) in the cabinet and the load. Refer to Table
3-1 for the torque value. Ensure correct phase rotation.
Warning
If there is no requirement of power supply for the load before arrival of the service engineer, ensure that the system output cables are
safely isolated at their ends.
Connection of batteries
Ensure correct polarity of the connections from the battery string terminals to the BCB and from the BCB to the battery
input terminals (BAT+, BAT N, BAT-) in the UPS cabinet, that is, (BAT+) to (+) and (BAT-) to (-), (BAT N) to (N), but
disconnect one or more battery cell links in each tier. Do not reconnect these links and do not close the BCB before
authorized to do so by the service engineer.
Note: When connecting the cables between battery terminals and BCB, the connection should begin f rom the
BCB terminal.
Now the connection is finished. Then replace the protective covers.
Note
After connection, take appropriate measures to seal the cable entry holes.
3.2 Wiring Of Signal Cable
3.2.1 Overview
For on-site specific needs, the UPS needs auxiliary connection to realize battery system (including the external battery
switch) management, communicate with PC, provide alarm signal to external devices, realize remote EPO or provide bypass
back feed circuit breaker signal and parallel communication. These functions are realized through the communication box in
the UPS cabinet. As shown in Figure 3-5, the communication box provides the following ports.

1 2 3 4 5
J19
J19 J20
J20
RE PO
REPO RS232
RS232
J21 J22 J26
J21 J22 J26
LBS
LBSPORT
PORT PARA
PARA PORT
PORT
J23 J24 J25

J25
INTELLISLOT1 INTELLISLOT2 INTELLISLOT3

INTELLISLOT1 INTELLISLOT2 INTELLISLOT3
6
Note:
1 REPO port
2 RS232 communication port
3 LBS communication port
4 Parallel communication port
5 User dry contact port
6 Intellislot port
Figure 3-5 Illustration drawing of communication ports
3.2.2 Dry Contact Port J21
The dry contact port J21 is shown in Figure 3-6. The port which is only operated by service engineer is used for the
configuration of the parallel CAN. Before delivery, the jumper has been connected to the bottom terminal of J21. When the
parallel number is less than or equal to two, no need to replace it; when parallel number is larger than two, ensure that the
first and last jumpers at the top terminal.
The dry contact voltage is 12Vdc, and the current is 20mA. The default configuration of dry contact: Pin2 and Pin4 shorted,
Pin6 and Pin8 shorted, Pin10 and Pin12 shorted.
1 3 5 7 9 11 13 15 17 19
J21
2 4 6 8 10 12 14 16 18 20
Figure 3-6 Dry contact port J21
The dry contact port J22 is shown in Figure 3-7 and described in Table 3-5. The dry contact voltage is 12Vdc, and the
current is 20mA.
1 3 5 7 9 11 13 15 17 19
J22
2 4 6 8 10 12 14 16 18 20

Table 3-5 Description of dry contact port J22

Pin Name Meanings Pin Name Meanings
1 12V_DRV BCB driver signal 2 NC Reserved
3 BCB STATUS BCB state signal 4 NC Reserved
5 GND_DRY Dry ground 6 NC Reserved
7 BCB_ONLine BCB on line signal 8 NC Reserved
9 NC Reserved 10 NC Reserved
External battery
13 TMP_BAT 14 NC Reserved
temperature
15 12V_DRY Power 16 NC Reserved
19 BAT_Ground_FAULT Battery ground fault 20 NC Reserved
Note
The BCB drive signal and external battery temperature signal need shielded cables, and the both sides of the shielding coat must be
well connected to the enclosure.
The dry contact port J26 is shown in Figure 3-8 and described in Table 3-6. The dry contact voltage is 12Vdc, and the
current is 10mA.
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31
J26
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32
Table 3-6 Description of dry contact port J26

1 Q1 STATUS 2 GEN MODE Generator mode input. Generator
Status signal of the rectifier input
mode when shorted with Pin2,
3 GND_DRY switch 4 GND_DRY
Pin4
5 Q2 STATUS Status signal of the bypass input 6 TMP BATT_IN
7 GND_DRY switch 8 +12V_DRY
Reserved
9 Q3 STATUS Status signal of the external 10 Reserved
11 GND_DRY maintenance switch 12 GND_DRY
13 Q5 STATUS Status signal of the external output 14 ENV_DET Battery room temperature
15 GND_DRY switch 16 GND_DRY abnormal
17 GND_DRY 18 CHG SHUT
Reserved Charger off contact
19 RESV2 20 GND_DRY
21 RESV3 22 RESV1
Reserved Reserved
23 GND_DRY 24 GND_DRY
25 NC Reserved 26 NC Reserved
27 UT1 485+ Reserved 28 UT2 485+ Reserved
29 UT1 485- Reserved 30 UT2 485- Reserved
31 GND_MON Reserved 32 NC Reserved

3.2.5 Dry Contact Ports J23 ~ J25
The dry contact ports J23 ~ J25 are shown in Figure 3-9 and described in Table 3-7. The dry contact can bear voltage up to
24Vdc or 250 Vac, and the largest current flowing is 5A.
1 3 5 1 3 5 1 3 5
J23 J24 J25
2 4 6 2 4 6 2 4 6
Figure 3-9 Dry contact ports J23 ~ J25
Table 3-7 Description of dry contact ports J23 ~ J25

Port Pin Name Meanings
1 BFP_O Bypass back-feed normally open contact. Open when there is no back-feed
3 BFP_S Bypass back-feed common contact
5 BFP_C Bypass back-feed normally closed contact. Closed when there is no back-feed
J23
2 INV_O Inverter state normally open contact. Closed when the inverter is on
4 INV_S Inverter state common contact
6 INV_C Inverter state normally closed contact. Open when the inverter is on
1 MFP_O Rectifier back-feed normally open contact. Open when there is no back-feed
3 MFP_S Rectifier back-feed common contact
5 MFP_C Rectifier back-feed normally closed contact. Closed when there is no back-feed
J24
2 MAIN_O Rectifier input state normally open contact. Closed when the rectifier is on
4 MAIN_S Rectifier input state common contact
6 MAIN_C Rectifier input state normally closed contact. Open when the rectifier is off
1 RESV_O Reserved
3 RESV_S Reserved
5 RESV_C Reserved
J25
2 RESV_O Reserved
4 RESV_S Reserved
6 RESV_C Reserved

3.2.6 REPO Port
The UPS has an EPO function that operates by an EPO button on the touch screen of the UPS or by a remote contact
provided by the user. The EPO button has a protective cover.
J2 is the REPO port. The port is shown in Figure 3-10 and described in Table 3-8.
1 2 3 4
J2
Figure 3-10 REPO port J2
Table 3-8 Description of REPO port J2

EPO activated when EPO activated when
1 EPO-NC 3 + 12V
opened to Pin 2 shorted to Pin 4
EPO activated when EPO activated when
2 + 12V 4 EPO-NO
opened to Pin 1 shorted to Pin 3
EPO is triggered when pins 3 and 4 of J3 are shorted or pins 2 and 1 of J2 are opened.
If an external EPO facility is required, pins 1 and 2 or 3 and 4 of J2 are reserved for this function. The external EPO facility is
also connected to the normally open or normally closed remote EPO switch between these two terminals using shielded
cable. If this function is not required, pins 3 and 4 of J2 must be opened and pins 1 and 2 of J3 must be shorted.
Note
The UPS EPO action shuts down the rectifier, inverter and static bypass, but it does not internally disconnect the mains input power. To
disconnect all power to the UPS, open the external power switch, bypass input switch, output switch and BCB after EPO is activated.
3.2.7 RS232 Communication Port
See Figure 3-5 for the position of RS232 communication port. This port sets parameter through connecting with computer.
The RS232 communication port provides serial data and is intended for use by authorized commissioning and service
personnel in UPS commissioning and service.
3.2.8 Parallel And LBS Communication Ports
See Figure 3-5 for their positions.
3.2.9 Intellislot Port
The Intellislot ports are used for installing optional cards on the site, including IS-UNITY-DP card, IS-Relay card, and SIC card.
Table 3-9 provides models and installation positions of the optional cards. For the detailed installation of the optional cards,
refer to the corresponding contents in Chapter 8 Options.
Table 3-9 Models and installation positions of optional cards
Optional card Model Installation position
IS-UNITY-DP card IS-UNITY-DP Intellislot ports 1 ~ 3 (port 1 or 2 recommended)
IS-UNITY-LIFE card IS-UNITY-LIFE Intellislot ports 1 ~ 3 (port 1 or 2 recommended)
SIC card UF-SNMP810 Intellislot ports 1 ~ 3 (port 1 or 2 recommended)
IS-Relay card IS-RELAY Intellislot port 1

Note
1. The Intellislot port 2 shares communication resource with RS485 port. To avoid conflict, when using RS485 port in service and
commissioning, it is not recommended to use the Intellislot port 2.
2. The Intellislot port 3 shares communication resource with RS232 port. To avoid conflict, when using RS232 port in service and
commissioning, it is not recommended to use the Intellislot port 3.
3.2.10 Signal Cable Connection Steps
Note
Respectively route the power cables and signal cables. The shielding coat of signal cable must be reliably earthed. Note that the cables
binding should not affect the module plug/unplug.
Two connection modes are available: top cable access, bottom cable access. Refer to Figure 3-11 and Figure 3-12 for the
cabling route and then connect signal cables to corresponding ports shown in Figure 3-5.
Top cable access
Figure 3-11 Signal cables wiring route of 250kVA (top cable access)

Bottom cable access

Figure 3-12 Signal cables wiring route of 250kVA (bottom cable access)

Chapter 4 Operator Control And Display Panel 31
Chapter 4 Operator Control And Display Panel
4.1 Introduction
The Liebert APM
Liebert UPS modules. The control collects a profusion of information about the health of the modules and presents it in a
standardized format. This simple, dynamic display speeds operator response to changing power input and demand. Many of
the settings will depend on the UPS type and features. Many other settings will be made during the UPS setup by Vertiv
Tech service personnel. The Liebert APM
The Status Scroll Bar at the top of the touchscreen display summarizes system conditions. The bar changes color to
indicate status and includes an icon matched to the status. The Status Gauge displays such details as power demand from
the connected load, input power quality, output and bypass on each phase and battery capacity. The Liebert APM
hensive system information that the operator needs: Is input
power connected? Are there any alarms? Which breakers are open and which are closed? Is the UPS on battery? How much
run time is available? Checking a particular component is as simple as touching it on the mimic display Detailed data
appears, allowing the operator to respond. Visual and audible alarms alert personnel to faults and alarms requiring
immediate attention. Passcodes for each level of access Operator, Administrator and Service secure the UPS against
unauthorized changes. Personnel without a passcode can view UPS status, but cannot change any functions or the
appearance of the interface.
Figure 4-1 Liebert APM Touchscreen Control Panel components

32 Chapter 4 Operator Control And Display Panel
4.2 Navigating Through The Liebert APM Touchscreen Control Panel

The Liebert APM Touchscreen Control Panel is active whenever the UPS has input power. The touchscreen
TOUCHSCREEN on the front of the UPS permits:
--4.3.1 Log In to the Liebert APM Touchscreen Control Panel
omizing the user interface--4.3.2 Customizing the Display
--4.4
Viewing UPS Status and 4.5 Viewing UPS Component Status
--Silence an Alarm
--Inverter On
--Inverter Off
--Reset Fault
--Energy Saving Mode Activation
The Liebert APM Touchscreen Control Panel's display default view is two panes: One-line animated mimic and UNIT
STATUS. The appearance can be changed to multiple panes that show other data. Customizing the appearance is detailed
in 4.3.2 Customizing the Display.
4.2.1 Access Level Log-In
The Liebert APM Touchscreen Control Panel provides security by limiting the authority to change how the UPS operates.
Each of the four access levels offers different authority:
--Viewing permission only; can choose graphic or text display; no PIN required
--Permission to start the UPS, shut the system down, reset faults and enable or disable Eco Mode operation; PIN
required
--All functions of Operator plus permission to change PINs for Operator and Administrator level; PIN required
--All functions of Administrator plus permission to alter system configuration, choose serial communication
protocol, enable equalize battery charging and change Service PIN; PIN required.
Vertiv Tech Liebert Services sets PINs when setting up the UPS. These default PINs may be changed by those with
Administrator or Service access (see above).
Default PINs are:
Note
Risk of unauthorized changes to operational settings. Can cause equipment damage. The default PIN numbers should be changed
immediately to prevent unauthorized personnel from changing UPS operation or even shutting down the UPS. The PINs for Operator
and Administrator may be changed by logging in with either Administrator or Service level access.

4.2.2 Liebert APM Touchscreen Control Panel Components
The main areas of the Liebert APM Touchscreen Control Panel are shown in Figure 4-2. The display arrangement and the
information displayed can be changed. At log-in for all access levels, the Liebert APM Touchscreen Control Panel opens to
the STATUS screen in graphic display. The STATUS screen will show the animated mimic and system status readings at
each log-in level. The appearance will differ only in the function menus displayed (see Figure 4-3).
Figure 4-2 Interface overview STATUS screen; graphic display
Observe level (or no log-in) Service level
Operator level Administrator level

Figure 4-3 Control display by access level
Information and control are different under each Function Menu. The Function Menus displayed are specific to the access
level.
erter off, energy saving status; visible to Operator, Administrator

and Service
isible to Service

Context Menu
The Context Menu, available by touching the icon at the top left corner of the interface, displays information about the UPS
and permits changing various settings. The functions possible through the Context Menu are determined
access level and on the Function Menu that is active (see Figure 4-4).
The menus under Display Options on STATUS, for example, differ for each access level. Some information available through
the Context Menu, such as alarms and run hours, are available through other areas of the Liebert APM Touchscreen Control
Panel.
Figure 4-4 Context Menus
Touching a menu item will reveal data or expand the menu to show additional options.
component affected and description; see also Using the
Edit Icon to Customize Layout; same options for all access levels except Observers cannot acknowledge alarms.
component affected and description;
see also Using the Edit Icon to Customize Layout; same options for all access levels
Mode notification (immediate entry into screen saver); screen goes dark and user is logged off;
interface reactivated by touching the screen; same options for all access levels
isplays details in the right panel; see also
Using the Edit Icon to Customize Layout
4.3.2 Customizing the Display); not available to Observer

-log-out timer, display brightness, status indicator
brightness and touchscreen calibration (see 4.3.2 Customizing the Display); language and display brightness only are
available to Observer
-down lists for time zone, date, local time and UTC time (Coordinated Universal Time) (see 4.3.2
Customizing the Display); not available to Observer
-down lists for date and time format and measurement system (metric or imperial) (see 4.3.2 Customizing
the Display)
's support: Web site, e-mail address and telephone numbers

re and firmware; UPS model, rating, configured capacity, model number

and serial number
Mimic Display Components
The animated mimic display shows each configured major component of the UPS system, for both single-module and
multi-module systems. The mimic display is the same for all access levels. The power path is shown by animated lines;
moving dashes show the active power path. Breakers are shown as open or closed (see Figure 4-5), but are not interactive.
Components in the mimic display signify their operational status by their color, green, amber or red. Tables 1 through 3
describe the various states of the indicators. Touching a component brings up details about its status
Figure 4-5 Mimic display, normal operation
UNIT STATUS Pane Components

The UNIT STATUS pane is identical for all PIN access levels (see Figure 4-6) Observers will not have the pencil edit icon. In
the default graphic view, the UNIT STATUS pane shows:
--Connected load shown in kW and as a percentage of capacity; input, output and bypass voltage for each
phase (default data may be changed; see 4.4.1 Viewing UPS Data with the Status Gauge).
Touching any of the detail icons reveals additional data about that selection in the opposite pane. The data pane may be
closed by touching the Close radio button or by touching the same or another detail icon. The read-only information is
available to all access levels (see Figure 4-7).
Note
If the Status Gauge is showing, no more than four detail icons will be visible at a time. Removing the Status Gauge permits showing all
five detail icons. The view may be customized to show fewer than four.

Figure 4-6 UNIT STATUS pane components; graphic display
Figure 4-7 UNIT STATUS pane Input details; graphic display
Figure 4-8 UNIT STATUS pane Bypass details; graphic display

Figure 4-9 UNIT STATUS pane Battery and cabinet details; graphic display
4.3 Operation
4.3.1 Log In To The Liebert APM Touchscreen Control Panel
The Liebert APM Touchscreen Control Panel is On whenever the UPS has control power. It may be inactive and appear dark,
depending on its settings. If it is inactive, touch the TOUCHSCREEN to wake it up.
To log in to the Liebert APM Touchscreen Control Panel:
1. Touch the LOG IN icon at the top right of the screen. The lock and background will change color and open the PIN
REQUIRED screen, which has a keypad.
2. Enter a PIN at the screen below.
3. Touch Enter
Note
Entering an incorrect PIN will generate a screen saying the number is invalid.
Figure 4-10 Log in screen

4.3.2 Customizing The Display
The Liebert APM

panels can be altered to show additional or different data. Layouts may be chosen by any user with a PIN: Operator,
Administrator or Service; the layout chosen will be applied to all users. Layouts may be created or altered only with
Administrator or Service Access.
Note
The original configuration, Default View 1, cannot be deleted. Editing through the menus will create a new view with the new settings.
The Default View 1 can be altered with the pencil edit icon in the display (see Using the Edit Icon to Customize Layout).
e:
1. Log in to the Liebert APM Touchscreen Control Panel as Administrator or Service detailed in 4.3.1 Log In to the Liebert
APM Touchscreen Control Panel.
2. From the STATUS view, touch the Context Menu icon in the top left corner (shown at right).
3. Select Display Options -> Customize Layout. (The right pane details how to edit or create a view; see Figure 4-11.) Edit a
View
4. Touch a view to highlight it or touch Edit to change that view. Create a View
5. Touch the New button to create a view.

Figure 4-11 Customize the display
-screen keyboard
(maximum length is 14 characters). Touch the Enter key on the on-screen keyboard after entering the new name.
7. From the drop-down list under the Layout heading, select the number of panes in the new or edited view (the maximum is
four).
8. Choose the data to be displayed in each pane by touching a choice in the PANEL OPTIONS and then touching the
appropriate panel. Repeat for each pane.
9. Touch the Save button to keep the changes or touch the Cancel button to exit the screen without saving.

Figure 4-12 Set number of panes and choose data
10. Touch the Save button.

11. When the window returns to two screens PANEL CONTENT and PANEL OPTIONS touch the radio button beside the
new view to activate it (this puts a dot inside the circle).
12. Touch Save.
13. Touch the STATUS menu icon to see the new appearance.
To choose an existing layout, navigate to the PANEL CONTENT screen and touch the radio button beside the layout, then
touch the STATUS menu icon.
Remove a Layout
To delete a layout:
Log in with Administrator or Service access.
Using the Edit Icon to Customize Layout
The Liebert APM Touchscreen Control Panel layout can also be changed with the Edit icons on the screen for a user
logged-in as Operator, Administrator or Service. The Edit icon can be used to add or remove panels, resize panels, rearrange
panels and change monitored parameters.
To use the Edit icon:

1. Touch the Edit icon on the panel to be edited and hold it until a Change content button appears on the panel
(about 1 second).
Change Panel
2. Touch an icon to choose the data to be displayed in the panel (see Figure 4-13); choices are:
One-Line Run Hours
Status Event Log
Alarms Battery Cycle Monitor Summary
Change UNIT STATUS Panel Content
he
parameters.
b. Touch the X beside the parameter to be removed from the panel. The Add Parameter icon (+) will appear in the panel if
another parameter can be added. The number of parameters possible is based on whether the Status Gauge is showing.
c. Touching the Add Parameter icon brings up a window to add parameters not already shown on the UNIT
STATUS panel.
4. Touch and hold the Edit icon again while the Change content button is displayed.
5. Release the icon. Resize handles will appear around the panel and a large X will appear at the top right corner.
6. Pull on a handle to resize the panel, or
7. Touch the large X to delete the panel.
Rearrange Panels
8. With the resize/remove handles visible, touch the circle in the center of the panel and drag the panel to its new position.
Exit Edit Mode
9. Edit Mode will deactivate after some changes. If all changes have been made and Edit Mode is active, touch t
header area.
Figure 4-13 Change panel content or resize/remove a panel

Figure 4-14 Resize or remove a panel
Edit UNIT STATUS Panel with the Edit Icon

The UNIT STATUS panel may be changed to add or remove data. The panel has four default parameters. Any or all can be
deleted or replaced with the Editing icon.
Possible parameters for the UNIT STATUS panel are:
Note
Changes made to the UNIT STATUS panel will be applied to all views using the panel.

To edit the UNIT STATUS panel:

1. Activate the editing mode by touching and holding the Edit icon on the UNIT STATUS panel.
2. Touch the large X by a parameter icon to delete it or touch the + icon at the bottom right of the panel to add a
parameter icon.
3. Touch the header area to deactivate the edit mode.
Figure 4-15 Edit UNIT STATUS panel
4.3.3 Operator Controls
The Operator login confers control of UPS functions:
tery Operations
Each command is available under the OPERATE menu. The OPERATE menu may be used by logging in with Operator,
Administrator and Service access.
Note
Risk of improper operation. Can cause load drop resulting in equipment damage. The Inverter On, Inverter Off, Reset Fault and Energy
Saving Mode Activation commands will be available whenever the UPS is operating. Before executing any command, verify that the UPS
status is suitable for the command to be performed.
Operate Menu Commands

All Operator commands are available from the OPERATE menu. The menu is available whenever the UPS has input power.
The UPS need not be supplying power to the load for the menu to be available. The animated mimic is not linked to data in
this view touching a component will not cause it to display data.

Figure 4-16 OPERATE menu Operator login
Silence an Alarm
To silence an alarm, touch the Silence radio button at the top of the panel. The time the alarm will remain silenced varies,
depending on the UPS type, type of alarm and configuration.
Inverter On
The Inverter On menu item is available whenever the UPS has input power and the inverter is Off. Before executing the
command, verify that the UPS is prepared for the inverter to start. Operator access shown; commands are the same for all
access levels Operation 15 Liebert® APM APM Touchscreen Control Panel will
display a message asking for confirmation and noting that it may take a moment to start (see Figure 4-17). The control will
display a progress window while the inverter starts.
Figure 4-17 Inverter On command

Inverter Off
The Inverter Off menu item is available whenever the UPS has input power and the inverter is Off. Before executing the
command, verify that the UPS and connected load are prepared for the inverter to be shut down.
Note
Risk of improper operation. Can cause load drop resulting in equipment damage. The Inverter Off will shut off power to the connected
load unless bypass power is available. Before executing this command, verify that the connected load is either shut off or that input
power to the load will be supplied by another source, such as bypass.
Figure 4-18 Inverter Off command
Reset Fault
Faults may be reset with the Reset radio button.
Figure 4-19 Reset fault command
Suspended Time Remaining

The Suspended Time Remaining box is not configurable. It is the time remaining when energy savings mode is suspended. It
is active when energy saving mode has been going active and inactive too much and the system will suspended its
activation for a period.
Module Redundancy Status

modul dự phòng
Module redundancy is usually chosen during system setup. Redundancy may be enabled only with Administrator or Service
permissions. Proper operation requires the presence of at least a second module, but the system may encompass more
modules.
To enable module redundancy:
1. Log in with Administrator or Setup permissions.
2. Touch the SETUP tab.
3. Touch the Context Menu icon and select UPS Settings.
4. In the Module Redundancy drop-down menu, touch Enable.
5. Touch the Save button to save the new setting or touch Cancel to exit without saving
Figure 4-20 Enable module redundancy
Energy Saving Mode Activation
Note
Refer to the UPS manual before activating Energy Saving Mode. An Operator can only enable or disable Energy Saving Mode. The
modes available vary according to the UPS type and system configuration. The types available must be set up by someone with either
Administrator or Service access.
Energy Saving Mode may be activated or deactivated through the OPERATE menu screen. Two modes are available: Eco
Mode and Intelligent Parallel Mode.

tiết kiệm nang lượng
Eco Mode permits the UPS to reduce power consumption by powering the load through bypass power when utility-supplied
power is within acceptable ranges. The inverter will remain in a state that will permit it to resume supplying power if the
utility power goes outside acceptable ranges.
Intelligent paralleling puts units in a sleep mode until required.
To activate or deactivate Energy Saving Mode:
1. Touch the Setup radio button for Energy Saving Mode Activation.
2. Enable or disable Energy Saving Mode.
3. Touch the Save button. The Save button is inactive until the activation state is changed
Figure 4-21 Activating Energy Saving Mode
4.4 Viewing UPS Status

The Liebert APM Touchscreen Control Panel interface reports UPS status in multiple ways. The graphic views and text
views will show the same readings.
Alarms and certain events will trigger audible alarms and the LED on the bezel, the light bar and the status header will
change color. (Audible alarms will not sound unless enabled.) The scrolling information bar at the top of the interface
summarizes information about the UPS status. The Status Gauge on the UNIT STATUS pane gives additional details about
the UPS status

4.4.1 Viewing UPS Data With The Status Gauge
rator or
Service access.
The additional data will not replace the information shown in the center of the Status Gauge. Touching the center of the
Status Gauge multiple times on will cycle through the data.
Figure 4-22 Default Status Gauge view
To change the values shown on the Status Gauge:

1. Log in with either Administrator or Service access.
2. Touch the SETUP menu icon.
3. Touch the Context menu icon.
4. Touch Configure Status Gauge. This opens the DIAL CONTROL SETUP pane, which holds settings for the readings in the
center of the gauge and for the upper and lower metering.
To change the data shown in the center of the gauge:
a. Expand the Center Readings menu by touching the arrow beside it.
b. Put a check mark in the check box beside each value to be displayed (see Figures 4-23 and 4-24).
a. Expand the Upper Meter or Lower Meter menu by touching the arrow beside it.
b. Use the drop-down menu to choose whether the Upper Meter or Lower Meter shows data for the Battery or Load.
(Either the upper or lower part of the Status Gauge may be used to show Load or Battery readings.)
c. Use the sliders to change the Warning Threshold or Critical Threshold (see Figures 4-23 and 4-24).
5. Touch the Save button to keep the changes or touch Cancel to exit without saving the changes.
Note
The DIAL CONTROL SETUP pane may be also be accessed by touching the Status Gauge and holding it for about 2 seconds. This
requires Administrator or Service access.

Figure 4-23 Access Status Gauge settings

Figure 4-24 Status Gauge setting options

4.4.2 Viewing UPS Data With The Status Panel
More-
animated mimic display brings up data about the component on another pane. Touching a parameter icon on the UNIT
STATUS pane brings up further details about that parameter.
The same data can be vieweds by switching to the text view. The length of the lists and order of the details may require
scrolling to find the desired data.
Note
A parameter must be visible on the graphic view of the UNIT STATUS screen for details to be viewed, even in the text view.
Figure 4-25 Unit status Input details

Figure 4-26 Unit status Bypass details

Figure 4-27 Unit status Battery details

Figure 4-28 Unit status Load details

Figure 4-29 Unit status Environmental details
4.4.3 Logs Alarms And Events
The Context Menu, when opened from the STATUS pane, permits viewing logs of alarms and events that have occurred on
the UPS. Both logs include the date and time of occurrence, type, an ID, component affected and a description of the alarm
or event. The information is available to Observers, those without a log in passcode.
To view the alarms or events:
1. Navigate to the STATUS pane , if required.

2. Touch the Context Menu icon.
3. Touch the log to view, alarms or events; refer to Figure 4-30.
Touching Alarms immediately opens the list of alarms; touching Logs requires touching the UPS Event Log screen.

Figure 4-30 View alarms or events
4.5 Viewing UPS Component Status

The animated mimic screen permits viewing details about the main components installed and configured in the UPS. The
data list opens on the opposite side of the screen and, for most parameters, expands to show all details for the component
touched.
The same component information can be obtained by going to the Status -> Components menu.

Figure 4-31 Unit status Input details
Figure 4-32 Unit status Output details
Figure 4-33 Unit status Bypass details

Figure 4-34 Unit status Power module details
Figure 4-35 Unit status Battery details
4.6 Status Bar Component

The status bar indicates UPS status by:
4-1 through 4-3.
.
shown at right.
4.6.1 Status Bar Messages
Up to three messages may scroll through the status bar to the right of the status icon. Each message will have a duration of
.

Table 4-1 Normal status messages

Message 1 Message 2 Message 3 Definition
Frequency converter This system is in normal operating mode, supplied by the
Load on inverter Output frequency X Hz
mode active inverter and operating as a frequency converter
Energy saving mode This system is in normal operating mode, supplied by the
Load on inverter /
active inverter, and has one of the energy saving modes active
This system is in normal operating mode, supplied by the
Load on inverter Operation normal /
inverter, and has no special configurations
Energy saving mode This system is in normal operating mode, supplied by the
Load on bypass /
active bypass , and has one of the energy saving modes active
Battery test in This system is in normal operating mode, supplied by the
Load on battery /
progress inverter via the battery, and a battery test is actively running
Energy saving mode This system is in normal operating mode, load not supplied
Load off /
active by this unit, and has one of the energy saving modes active
This system is in normal operating mode, for the test mode
Load on inverter Test mode active /
that is activated
Table 4-2 Warning status messages

This system is in warning operating mode, supplied by
LOAD ON OUTPUT
the inverter, and the system is in overload. This means
INVERTER OVERLOAD the system will go off inverter at some point
LOAD ON This system is in warning operating mode, supplied by
ALARM VIEW ALARM the inverter, and has an active warning. This means the
INVERTER ACTIVE LOG FOR system is operating, but something was detected to be
WARNING DETAILS outside of normal
LOAD ON BYPASS LOAD This system is in warning operating mode, supplied by the
LOAD bypass. The user transferred the load to the bypass so
MANUALLY UNPROTECTE
TRANSFERRE the system cannot protect itself from source variations
D
D TO BYPASS
LOAD ON BATTERY X This system is in warning operating mode, supplied by
the inverter via the battery. There are X minutes of
MINU calculated run time remaining. This is used before the
TES battery low-voltage warnings are generated
REM
AINI
NG
LOAD ON BYPASS ALARM VIEW ALARM This system is in warning operating mode, supplied by
the bypass, and has an active warning. This means the
ACTIVE LOG FOR
system is operating after a transfer to bypass and
WARNING DETAILS something was determined to be outside normal range
LOAD ON ENERGY ALARM ACTIVE This system is in warning operating mode, supplied by
INVERTER the inverter, one of the energy saving modes is active,
SAVING WARNING
and has an active warning. This means the system is
MODE operating, but something was determined to be outside
ACTIVE normal range
LOAD ON BYPAS ENERGY ALARM ACTIVE This system is in warning operating mode, supplied by the
bypass, one of the energy saving modes is active, and has
SAVING WARNING
an active warning. This means the system is operating,
MODE but something was determined to be outside normal
ACTIVE range
LOAD OFF ENERGY ALARM ACTIVE This system is in warning operating mode, load off, one of
the energy saving modes is active, and has an active
SAVING WARNING
warning. This means the system is operating, but
MODE something was determined to be outside normal range
ACTIVE
LOAD ON TEST MODE ALARM ACTIVE This system is in warning operating mode, supplied by the
inverter, running in a system test mode, and has an active
INVERTER ACTIVE WARNING
warning. This means the system is in TEST MODE, and
something was determined to be outside normal test
operations
LOAD ON BYPASS TEST MODE ALARM ACTIVE This system is in warning operating mode, supplied by the
bypass, running in a system test mode, and has an active
ACTIVE WARNING
operation

LOAD ON BATTERY TEST MODE ALARM ACTIVE This system is in warning operating mode, supplied by the
ACTIVE WARNING battery, running in a system test mode, and has an active
operations
LOAD ON FREQUENCY ALARM ACTIVE This system is in warning operating mode, supplied by the
INVERTER CONVERTER WARNING inverter, operating as a frequency converter, and has an
MODE ACTIVE active warning. This means the system is operating, but
something was determined to be outside normal range
Table 4-3 Critical status messages

TRANSFER TO This system is in critical operating mode, supplied by the
LOAD ON OUTPUT
BYPASS inverter, and the load is about to be transferred to the
INVERTER OVERLOAD bypass due to overload timeouts
PENDING
LOAD ON ALARM VIEW ALARM This system is in critical operating mode, supplied by the
INVERTER ACTIVE LOG FOR inverter. There is a critical fault in the system that the user
CRITICAL DETAILS needs to view
LOAD ON BYPASS LOAD VIEW ALARM This system is in critical operating mode, supplied by the
AUTOMATICA LOG FOR bypass. The system moved the load to the bypass due to
LLY DETAILS a critical fault in the system
TRANSFERRE
D TO BYPASS
LOAD ON BYPASS ALARM VIEW ALARM This system is in critical operating mode, supplied by the
ACTIVE LOG FOR bypass. The system is running on bypass not due to auto-
CRITICAL DETAILS transfer, and a critical fault is active in the system
LOAD ON BATTERY X LOAD This system is in critical operating mode, supplied by the
MINU SHUTDOWN inverter via the battery. The battery is extremely low and
TES IMMINENT the load will turn Off or transfer to bypass soon
REM
AININ
G
ALARM VIEW ALARM This system is in critical operating mode, load not supplied
LOAD OFF ACTIVE LOG FOR by this unit. The load is not supplied for any reason and a
CRITICAL DETAILS critical fault is active
This system is in critical operating mode, load not supplied
LOAD OFF
by this unit. The load is not supplied and no active fault is
present
LOAD ON BATTERY ALARM VIEW ALARM This system is in critical operating mode, supplied by the
ACTIVE LOG FOR battery. The system is running on inverter via the battery,
CRITICAL DETAILS is not in imminent shutdown and a critical fault is active in
the system
LOAD OFF SERVICE This system is Off with a service mode active
MODE
ACTIVE
LOAD ON ENERGY ALARM ACTIVE This system is in critical operating mode, supplied by the
INVERTER SAVING CRITICAL inverter. The system is running on inverter, with an energy
MODE saving mode active and a critical fault is active in the
ACTIVE system
LOAD ON BYPASS ENERGY ALARM ACTIVE This system is in critical operating mode, supplied by the
SAVING CRITICAL bypass. The system is running on bypass, with an energy
MODE saving mode active and a critical fault is active in the
ACTIVE system
LOAD OFF ENERGY ALARM ACTIVE This system is in critical operating mode. The system is
SAVING CRITICAL NOT running, with an energy saving mode active and a
MODE critical fault is active in the system
ACTIVE
LOAD OF TEST MODE ACTIVE This system is off with a TEST MODE active
LOAD ON TEST MODE ACTIVE ALARM ACTIVE This system is in critical operating mode, supplied by the
INVERTER CRITICAL inverter, running in a system test mode, and has an active
fault. This means the system is in TEST MODE and
something critical was determined to be outside normal


test operations
LOAD ON BYPASS TEST MODE ACTIVE ALARM ACTIVE This system is in critical operating mode, supplied by the
CRITICAL bypass, running in a system test mode, and has an active
fault. This means the system is in TEST MODE, and
test operation
LOAD ON BATTERY TEST MODE ACTIVE ALARM ACTIVE This system is in critical operating mode, supplied by the
CRITICAL inverter via the battery, running in a system test mode,
and has an active fault. This means the system is in TEST
MODE, and something critical was determined to be
outside normal test operation
LOAD OFF TEST MODE ACTIVE ALARM ACTIVE This system is in critical operating mode, with LOAD OFF,
CRITICAL running in a system test mode, and has an active fault.
This means the system is in TEST MODE, and something
critical was determined to be outside normal test
operation
LOAD ON FREQUENCY ALARM ACTIVE This system is in critical operating mode, supplied by the
INVERTER CONVERTER CRITICAL inverter, operating as a frequency converter, and has an
MODE ACTIVE active fault. This means the system is operating, but
range
LOAD OFF FREQUENCY ALARM ACTIVE This system is in critical operating mode, load NOT
CONVERTER CRITICAL supplied, operating as a frequency converter and has an
MODE ACTIVE active fault. This means the system is operating, but
range
4.7 Alarm List

Table 4-4 provides the complete list of UPS alarm messages for display either on the 'Event' menu or on the 'Records' menu.
Table 4-4 Alarm list
Alarm Explanation
Fault Clear FAULT CLEAR key on the operator control and display panel pressed
Rectifier in Setting The rectifier starts up and is in synchronization
Inverter in Setting The inverter starts up and is in synchronization
Inverter Manual On INVERTER ON key on the operator control and display panel pressed to turn on the inverter
Inverter Manual Off INVERTER OFF key on the operator control and display panel pressed to turn off the inverter
The inverter failed to turn on when the INVERTER ON key is pressed. This may be the result of an invalid
Turn On Fail
operation (maintenance bypass switch closed) or DC bus or rectifier not ready
Rec. Soft Start Fail Owing to low DC bus voltage, the rectifier will report this alarm
Silence Active SILENCE ON/OFF key on the operator control and display panel pressed
Silence Inactive SILENCE ON/OFF key on the operator control and display panel pressed in alarm silence state
Bypass Mode The UPS is in bypass mode
Normal Mode The UPS is in normal mode
Battery Mode The UPS is in battery mode
Check UPS Output UPS shutdown with no output power
Output Disabled EOD event happened. Check the battery voltage
Other Bypass STS Fail The adjacent bypass STS open circuit fault or short-circuit fault
Input Voltage Abnormal The mains voltage is outside specifications and results in rectifier shutdown
Input Undervoltage At least one phase main input voltage is within 132V ~ 176V, thus the load should be derated
Input Freq. Abnormal The mains frequency is outside specifications and results in rectifier shutdown
Input Phase Reversed The AC input phase rotation is reversed
Input Backfeed Battery voltage fed back to rectifier input
Input Neutral Lost AC rectifier input neutral line not detected
Input Current Abnormal Battery load sharing imbalance or rectifier input current abnormal
Input Current Limit Input current over limit
The bypass frequency is outside specifications. This alarm automatically resets once the bypass voltage
Bypass Unable to Trace
goes normal

Alarm Explanation
The amplitude or frequency of the bypass voltage exceeds the limit. This alarm automatically resets once
Bypass Abnormal
the bypass voltage returns to normal
Bypass STS Fail At least one of the STSs at the bypass side is open or shorted. This fault is locked until power-off
Byp. Abnormal Shutdown Both the bypass and inverter voltages are abnormal, and the output is off
Bypass Phase Reversed The phase rotation of the bypass voltage is reversed
Bypass overcurrent The bypass current is outside the rated current
Bypass backfeed The bypass backfeed is faulty
Bypass Overtemperature The bypass has overtemperature
The bypass detects an inverter signal when the system runs normally. When the output voltage is
Bypass in Charge
abnormal, the system will transfer to bypass mode for power supply
Bypass Neutral Lost The bypass lacks of N
Bypass in Setting The bypass module is initialized and synchronized
Rectifier Fault Bus voltage abnormal or battery SCR short circuit
The rectifier, inverter and battery converter shut down because the DC bus voltage is too high. The load
DC Bus Overvoltage
transfers to bypass
DC Bus Abnor. Shutdown The DC bus voltage is abnormal and results in inverter shutdown. The load transfers to bypass
The output voltage and bypass voltage are misaligned in phase. This alarm resets automatically once the
Inverter Asynchronous
condition is no longer true
Inverter Fault Inverter output voltage outside specifications. Load transfers to bypass
Inverter Relay Fail At least one of the inverter relays is opened or shorted. This fault is locked until mains power-off
Output Fuse Fail At least one of the inverter output fuses is blown
Output Volt. Abnormal At least one phase of the output voltages is abnormal
This alarm appears when the load arises above 105% of the nominal rating. The alarm automatically resets
Output Overload
once the overload condition is removed
This alarm appears when the total load rises above 105% of the nominal rating of the parallel system. The
System Overload
alarm automatically resets once the overload condition is removed
The UPS overload status continues and the overload times out.
Out. Overload Timeout
When the time has expired, the load automatically transfers to the bypass
A transfer to bypass occurred due to a large step load. The UPS can recover automatically. Turn on the
Load Impact Transfer
load equipment in stages to reduce the load impact on the inverter
The load remains on bypass power owing to excessive number of transfers that occurred within the one
Excess Auto Rexfers
hour
The load remains on bypass power owing to excessive number of transfers that occurred within the one
Excess ECO Auto Xfers
hour
Load Sharing Abnormal The UPSs in a parallel system are not sharing the load current correctly
All UPSs in the parallel system transfer to bypass at the same time when one of them needs to transfer to
Other Module Xfer
bypass. This message appears on the TOUCHSCREEN of the UPS with passive transfer to bypass
Control Power Fail The auxiliary power failure or power-off
EPO EPO button on operator control and display panel pressed or external EPO command received
Fan Abnormal At least one fan has fault
Maintenance bypass switch is closed when the parallel system is on inverter, or output switch and
Operation Invalid
maintenance bypass switch are closed when the inverter is on
LBS Active The LBS setting is active
LBS Abnormal LBS is abnormal
Input Switch Open Input switch is open
Maint. Switch Open Maintenance bypass switch is open
Maint. Switch Closed Maintenance bypass switch is closed
Bypass Switch Open Bypass switch is open
Output Switch Open Output switch is open
Charger Fault Battery charger has failure
Discharger Curr. Limit Discharge current is over limit, close the discharger
Autostart After UPS shutdown at EOD, the inverter automatically starts upon mains restoration
Batt. Equalize Charge The battery is forced to be in boost charge state
Rectifier DSP Update Rectifier DSP software being updated
Rectifier FPGA Update Rectifier FPGA software being updated
Inverter DSP Update Inverter DSP software being updated

Alarm Explanation
Inverter FPGA Update Inverter FPGA software being updated
Bypass DSP Update Bypass DSP software being updated
Bypass FPGA Update Bypass FPGA software being updated
Monitor Update Monitoring software being updated
Flash Operate Fail Historical record not saved
Remote Turn On Turn on the inverter through the service command
Remote Turn On Fail Caused by invalid operation (maintenance bypass switch closed), DC bus or rectifier not ready
Remote Turn Off Turn off the inverter through the service command
No Battery Check the battery and battery connection
Discharger Fault Bus voltage abnormal
Battery Reversed Reconnect battery and check battery wiring
Battery Period Testing The battery is under automatic periodic battery maintenance test (20% capacity discharge)
Batt. Capacity Testing The user initiated a battery capacity test (100% capacity discharge)
Batt. Maint. Testing The user initiated a maintenance test (20% capacity discharge)
Batt. End of Discharge Inverter turned off due to battery EOD
Battery Overtemp. The battery temperature is over limit
Before the EOD, battery low pre-warning will occur. After this pre-warning, the battery will have the
Low Battery Warning
capacity for 3min discharging with full load. The time is user-settable from 3min to 6min
On Generator Dry contact signal, indicating generator connected
Battery Maintain Capacity of the battery
Battery Ground Fault Battery has ground fault
Batt. Room Temp. Abn. Battery room has overtemperature (option included)
BCB1 Status Abnormal Logic conflict between BCB1 drive signal and backfeed signal
BCB1 Closed BCB1 state (closed)
BCB1 Open BCB1 state (open)
Phase A Out. Fuse Fail Check that the wire jumper on the X3 board is correct
Phase B Out. Fuse Fail Check that the wire jumper on the X3 board is correct
Phase C Out. Fuse Fail Check that the wire jumper on the X3 board is correct
Equalize Chg. Timeout The actual float charging time exceeds the time set by the setting software
MonCAN Comm. Abnor. Communication failure among internal monitoring board and inverter, rectifier and bypass
ParaMonCAN
Communication fault between racks
Comm.Abnor.
PowerCAN Comm. Abnor. Communication failure among inverter, rectifier and bypass
ParaPowerCANCommAbn Communication failure between different UPSs in parallel system. Check if any UPS is not powered on or
or. parallel cables are not well connected, then clear the fault to restart the UPS
Communication failure between discrete bus inside the rack. It is recommended to confirm that the rear
Discr.Bus Comm.Abnor.
communication cables connection inside the rack is reliable
ParaDiscrBusCommAbnor Communication failure between discrete bus inside the rack. It is recommended to confirm that the rear
. communication cables connection inside each rack is reliable, and that the bypass module is fixed
Ambient Overtemp. The overtemperature detection of ambient temperature, which can be set through the setting software
Byp. SCR Fan Abnormal The internal fan of bypass module is faulty
Top-outlet Fan Abnor. The fan of top air outlet is faulty
System Interrupt Xfer Execute the interval transfer under conditions of bypass unable to trace and inverter phase not locked
Para. Cable Abnormal Parallel cables are not well connected or the cables are damaged
LBS Cable Abnormal LBS cables are not well connected or the cables are damaged
Loss of Redundancy Loss of redundant capacity
Pwr. Hardware Mismatch The model information set at the host is inconsistent with the actual situation
Module Overtemp. The power tubes of rectifier and inverter inside the module have overtemperature
Charger Overtemp. The power tube of charger inside the module has overtemperature
1. For UPS installed with the optional battery monitor, refer to the user manual of the battery monitor for the alarm messages related to
battery cell and charge current.
2. If the alarm is caused through setting the software value by Vertiv authorized engineer, and you wish to change the setting values,
please contact the Vertiv local customer service center.

64 Chapter 5 UPS Operation Introduction
Chapter 5 UPS Operation Introduction
This chapter introduces the operating precautions and daily operating methods of UPS in detail.
5.1 Brief Introduction
5.1.1 Precautions
Important
The user can conduct relative operation only after the authorized engineer carries out the first power on and test.
Warning: hazardous mains and/or battery voltage
1. No operator-serviceable parts are located behind covers that require a tool for their removal. Only qualified service personnel are
authorized to remove such covers.
2. The AC input and output terminals of UPS have dangerous voltage at any time. If the cabinet is equipped with an EMC filter, the filter
may have dangerous voltage.
1. For the control keys and touch screen related to all the operating steps, refer to Chapter 4 Operator Control And Display
Panel.
2. During operation, the buzzer alarm may occur at any time. Press SILENCE ON/OFF key to silence the audible alarm.
3. When UPS uses traditional lead-acid battery, the system provides boost charge optional function. If the lead-acid battery
is used, when the mains returns after an extended mains failure, the charging voltage of the battery will be higher than the
normal charging voltage, this is normal, and the charging voltage of the battery will return to normal value after a few hours'
charging.
5.1.2 Power Switch
Opening the front door of the UPS cabinet reveals the power switches, as shown in Figure 5-1, including:
Q1: Rectifier input switch, which connects UPS to the main circuit power.
Q2: Bypass input switch, which connects UPS to the bypass.
Q3: Maintenance bypass switch, which supplies power to the load when UPS is being maintained.
Note: Do not use the internal maintenance bypass switch when the system consists of two or more UPSs. For
details, refer to 7.3.2 Maintenance Bypass Procedures.
Q5: Output switch, which connects UPS output to the load.
Note
Q1, Q2, and Q5 are optional while Q3 is standard.

Chapter 5 UPS Operation Introduction 65
Q5
Q3
Q2
Q1
Figure 5-1 250kVA UPS power switch
5.2 UPS Startup Procedures

The UPS must be completely installed and tested by authorized engineer, and external power supply switch is closed, then
you can start the UPS.
5.2.1 Startup Procedures In Normal Mode
Warning
1. These procedures result in mains voltage being applied to the UPS output terminals.
2. If any load equipment is connected to the UPS output terminals, check with the user that it is safe to apply power. If the load is not
ready to receive power, please disconnect the downstream load switch, and stick a warning label on the connection point of the load.
Use the following procedures to turn on the UPS from a fully powered down condition.
1. Open the front door of the UPS, ensure that the internal maintenance bypass switch Q3 is disconnected, while the input
cables and copper bars are reliably connected.
2. Close the external input switch, ensure that the UPS input voltage, frequency and phase are normal.
Warning
To avoid misreporting as faults, all operations relating to disconnection or connection of the maintenance bypass switch shall be
finished within three seconds.
3. Close the output switch Q5, bypass input switch Q2, rectifier input switch Q1, and all external output isolating switches (if
any) of the UPS in turn.
At the moment, the system is powered on, and the startup screen pops up.

About 25 seconds later, click the icon to enter the system by inputting correct password.
Figure 5-2 Inputting password
4. When the rectifier start process is finished, the system will run in Bypass mode (Power flow shown in Figure 5-3). Click the
On key (Refer to Section 4.3.3).
Figure 5-3 Clicking INVERTER ON key

5. The inverter starts self-test and sycn.
Figure 5-4 Inverter self-test and sycn

6. Start-up is finished.
Figure 5-5 Start-up finished
5.2.2 Startup Procedures In ECO Mode
1. Open the front door of the UPS, ensure that the internal maintenance bypass switch Q3 is disconnected, and that the
input cables and copper bars are reliably connected.
Warning
any) of the UPS in turn.
3. If ECO mode is required, contact Vertiv service engineer to set it through the setting software. If you wish to set it by
yourself, you can enable it through the sub-menu under 'SETUP' on the TOUCHSCREEN screen. For details, refer to Section
4.3.3.

Figure 5-6 Setting ECO mode
4. When the rectifier start process is finished, start the system according to Section 5.2.1. After the inverter runs normally, if
the bypass voltage is within the range of ECO power supply, then the system works in ECO mode; otherwise the system will
transfer to inverter. The system will automatically work in ECO mode after the bypass voltage is within the range of ECO
power supply and lasts for five minutes.
UPS operated in ECO mode
5.3 Procedures For Transfer Between Operation Modes
5.3.1 Transfer From Normal Mode To Battery Mode
Open the external power switch to isolate the mains power and initiate the UPS on battery mode. To transfer the UPS back
to normal mode, wait for several seconds, and then close the external power switch to re-connect the mains power to the
UPS. 10 seconds later, the rectifier restarts automatically, and the UPS works in normal mode.
5.3.2 Transfer From Normal Mode To Bypass Mode
Click the Off key shown in Figure 5-7, and the UPS will transfer to bypass mode.
Figure 5-7 Transfer UPS to Bypass mode
Note
In bypass mode, the load is directly fed by the mains power instead of the pure AC power from the inverter.

5.3.3 Transfer From Bypass Mode To Normal Mode
When the UPS is in bypass mode, click the On key in Figure 5-8, and the inverter starts up. Then the UPS is transferred from
bypass mode to normal mode.
Figure 5-8 Transfer UPS to Normal mode
5.3.4 Transfer From Normal Mode To Maintenance Mode
The following procedures will transfer the UPS from inverter output mode to the maintenance bypass mode.
Caution: power supply interruption danger of the load
Before making this operation, read the information on the TOUCHSCREEN to make sure that the bypass supply is normal and that the
inverter is synchronous with the bypass supply, so as not to risk a short interruption in power to the load.
1. Shut down the inverter according to Section 5.3.2.
Note
The alarm can be silenced but leaves the alarm message displayed until the alarm condition is rectified.
2. Close the maintenance bypass switch Q3.

3. At the moment, the maintenance bypass parallels with the UPS static bypass.
4. The TOUCH SCREEN displays 'Maint. Switch Closed'.
Caution
When the UPS is in maintenance mode, the load is not protected against abnormal mains supply.

5. Pressing the EPO button stops the operation of rectifier, inverter, static switch and battery, but this action will not affect
the maintenance bypass power the load normally.
Note
Under maintenance mode, the load is directly fed by the mains power instead of the pure AC power from the inverter.
6. Disconnect the rectifier input switch Q1, bypass input switch Q2, and output switch Q5.
At the moment, all the internal power supply is off and the TOUCH SCREEN does not display any more.
Warning
1. If maintenance is required, paste a label at AC input distribution (generally away from UPS) to alert that the UPS is being maintained.
2. If the maintenance is required, wait 10 minutes for the internal DC bus capacitance discharging.
3. The parts of UPS circuits also have hazardous voltage, though the rectifier input switch, bypass input switch and battery switch are
disconnected. Therefore, the UPS maintenance is applicable to qualified personnel only.
5.3.5 Transfer From Maintenance Mode To Normal Mode
The following procedures will transfer the maintenance bypass supply mode of the UPS to the normal mode.
1. Close the output switch Q5, external power bypass switch, bypass input switch Q2, external power main switch and
rectifier input switch Q1 in turn.
Confirm that the TOUCHSCREEN is on and the UPS runs in Bypass mode.
2. Disconnect the maintenance bypass switch Q3.
3. Start the system according to steps 4~6 in Section 5.2.1.
Now the UPS runs in Normal mode.
Warning
You must start the bypass first, and then disconnect the maintenance bypass switch; or it may cause output load power failure.
At the moment, the load has transferred to UPS normal mode.
5.4 Battery Test Procedures

The battery test function is disabled by default. If you need this function, please contact the customer service engineer of
Vertiv.
The battery self-test includes periodical self-test and manual maintenance self-test. The battery discharge outputs 20%
energy of the total battery energy.
Periodical self-test is to test the battery activity. The periodical self-test is regular, and the self-test period can be configured
via the Vertiv setting software. During the periodical self-test, if the battery maintenance requirement is met, the system will
generate audible/visual alarm and corresponding records. The periodical self-test does not update the battery curve table.
The mode of the manual maintenance self-test is similar to that of the periodical self-test, except for the maintenance
self-test mode is started manually, and this operation is valid only one time, that is the system will not be automatically start
up the self-test once you exit. During the maintenance self-test, if the battery maintenance requirement is satisfied, the
system will generate audible/visual alarm and corresponding records. The maintenance self-test does not update the battery
curve table.
Note: The periodical self-test should satisfy the conditions of battery float charge at least 5h, and generator not
connected, while the manual maintenance self-test just satisfies the conditions of battery fully charged.
Achievement
1. Manual maintenance self-test: via the TOUCH SCREEN.

2. Periodical self-test: self-test period can be configured via the Vertiv setting software. The range of battery self-test period
is 30 days ~ 360 days (default: 60 days).
Self-test startup conditions
1. System load rate is within 20% ~ 100%, stable output.
2. Battery in fully charged state, battery float charge at least 5h, and generator not connected
3. Current system is in float charge state
Self-test exit conditions
1. Confirm that the system is not in self-test state at least 10 seconds, and satisfies the following conditions: in battery mode
or rectifier is closed, and then the system will shift to battery supply state.
2. During the self-test, the system will shift to float charge state if the load fluctuation, UPS module overload or no battery
occurs.
3. During the self-test, if the battery voltage is lower than the calculated pre-alarm voltage, or the battery discharge exceeds
the protection time, then the system will shift to float charge state.
4. The user can manually stop the maintenance test via the TOUCH SCREEN.
Note: After the self-test is successful, the system will fully clear the self-test interval counter. If the self-test fails this
time, then exits the system; when self-test conditions are satisfied again, enters self-test once more.
Procedures for battery self-test
1. Enter the level of OPERATE.
2. Click the icon .
3. Click the menu icon on the upper left corner.

4. Click the 'Battery Operations' to display the interface shown in Figure 5-9.
Figure 5-9 Battery management interface
5. Respectively click 'Automatic Battery Test', 'Manual Battery Test', 'Calibrated Battery Test' and 'Battery Equalize', then you
can execute corresponding settings and operation. For 'Calibrated Battery Test', refer to 1.4.2 Advanced Function.
5.5 UPS Shutdown Procedures
5.5.1 Procedures For Completely Powering Down UPS
Complete UPS shutdown and load power-off should follow this procedure. All power switches, isolating switches and
breakers are disconnected, and then UPS no longer supplies power to load.

Caution
The following procedures will cut off the load power, making the load completely power off.
1. Press the INVERTER OFF button to stop the operation of the inverter, then press the EPO button to stop the operation of
the rectifier, static switch and battery.
2. Disconnect the external battery switch.
3. Disconnect the rectifier input switch Q1, bypass input switch Q2, output switch Q5. At the moment, all the internal power
supply is off and the TOUCH SCREEN does not display any more.
Warning
1. Post a label at the AC input distribution (generally far away from the UPS) to alert that the UPS maintenance is being operated.
2. Wait 10 minutes for the internal DC bus capacitance discharging. Then the UPS is completely shut down.
Warning: hazardous battery voltage
The battery terminals still have hazardous voltage after the UPS is completely shut down.
5.5.2 Procedures For Completely Powering Down UPS While Maintaining Power To Load
The following procedures are suitable for completely powering down the UPS and still keeping the power supply to the load.
Refer to the procedures in 5.3.4 Transfer From Normal Mode To Maintenance Mode.
5.6 EPO Procedures

The EPO is designed to switch off the UPS in emergency conditions (that is, fire, flood, etc.). To carry out EPO, you just need
to press the EPO button, then the system will turn off the rectifier, inverter and stop powering the load immediately
(including the inverter and bypass), and the battery stops charging or discharging.
After EPO, if the input mains is present, the UPS's control circuit will remain active; however, the output will be turned off. To
remove all power from the UPS, first disconnect the external power switch of the UPS.
5.7 UPS Reset Procedures After EPO

After shutting down the UPS through EPO or reasons of UPS fault, clear the fault according to the alarm message displaying
on TOUCH SCREEN screen. Then carry out the following reset procedures to make UPS resume normal operation.
After confirming the fault has been cleared and no remote EPO signal is received, the user can carry out the following
procedures:
1. Click the Reset FAULT button (Refer to Section 4.3.3), the system will exit the EPO/abnormal OFF state, and the alarm
indicator flashes in red color.
2. After the rectifier start-up is finished, normally start the UPS according to Section 5.3.2.
Note
The rectifier will start automatically when the overtemperature fault disappears five minutes after the disappearance of overtemperature
signal.
3. After pressing the EPO button, if the mains input is switched off, the UPS will shut down completely. When the mains input
returns, the UPS will start up on bypass. There will be power at the output terminals of the UPS.
Warning
If the maintenance bypass switch Q3 is closed, and UPS has input power, it means UPS has outputs.

5.8 Automatic Restart

In the case of a mains failure, the UPS draws power from the battery system to supply the load until the batteries are
depleted. When the UPS reaches its EOD threshold, it will shut down.
The UPS will automatically restart and enable output power only when the following conditions are met:
1. If Auto Recovery after EOD Enabling is enabled.
2. After the Auto Recovery after EOD Delay Time expires (the default delay is 10 minutes), the UPS restarts bypass, then
inverter. During the automatic recovery delay, the UPS will charge its batteries to provide a safety margin for equipment
shutdown if input power fails again.
Note
During the automatic restart process, manual startup is disabled. Automatic restart must be set by Vertiv's authorized service engineer
through Vertiv setting software.
3. -up is
finished, start the UPS following normal procedures.
5.9 Selecting Language

Use the following procedures to select the language:
1. Click the icon .
2. Click the icon .

3. Click the item of Display.
4. Click 'Display Properties'.
5. As shown in Figure 5-10, click 'Language' to set the language you need.
Figure 5-10 Setting language
5.10 Changing Current Date And Time

Use the following procedures to change the system date and time:
1. Click the icon .
2. Click the icon .

3. Click the item of Display.

4. Click 'Date&Time'.
5. Refer to Figure 5-11, set the actual date and time.
Figure 5-11 Setting date and time
5.11 Control Password

To change password, carry out the following procedures:
1. Enter SETUP level.
2. Click the icon .

3. Refer to Figure 5-12, set password changing.
Figure 5-12 Setting password

Chapter 6 Battery 75
Chapter 6 Battery
This chapter introduces the battery, including the battery safety, installation and maintenance information, battery
protection function, as well as the connection of BCB cabinet (option), battery temperature sensor (option), and battery
ground fault detector (option).
6.1 Introduction
The UPS battery string is composed of several batteries in series connection and provides rated DC input voltage for the
UPS inverter. The required battery backup time (i.e. the time for battery to supply load upon mains failure) is subject to the
ampere-hour value of the battery. Sometimes, it is necessary to connect several strings of battery in parallel.
To facilitate the UPS installation, the battery is generally installed on the specially designed battery rack or in the battery
room.
During the maintenance or repair, the battery must be disconnected from the UPS. This operation may be realized by the
battery circuit breaker of proper capacity. This circuit breaker shall be located as close as possible to the battery connecting
terminal, and the wiring distance of the power and signal cables connected to the UPS shall be minimized.
When several strings of battery are paralleled to increase the battery backup time, disconnecting device shall be equipped,
so that the maintenance operation on a certain battery string will not affect the normal operation of other battery strings.
6.2 Safety
Take special care when working with the batteries associated with the UPS. When all the blocks are connected together, the
battery string voltage can be up to 540Vdc. This is potentially lethal. Please follow the precautions for high voltage
operation. Only qualified personnel are allowed to install and maintain the battery. To ensure safety, the external batteries
are to be installed inside a lockable cabinet or in a purpose-designed, dedicated battery room, so that they are only
accessible to qualified service personnel.

76 Chapter 6 Battery
Confirm that the battery switch has been disconnected before battery maintenance.
Warning: hazardous battery voltage present behind covers
1. No user-serviceable parts are located behind covers that require a tool for their removal. Only qualified service personnel are
2. Before working on the copper bars connected to the external battery, please ensure they are disconnected from all power supplies.
Proper connection mode Improper connection mode
Too large or too small torque may cause poor connection of the terminal. Under
Tighten the terminal bolt of the battery with
certain conditions, the terminal may have arcing or heat accumulation, which finally
specified torque
will cause fire
3. Observe the following safety precautions when working on the batteries:

a) The battery shall be firmly and reliably connected. After the connection is completed, the screw connections between all the
terminals and the batteries shall be calibrated. The requirements on torque specified in the specifications or user manual provided by
the battery manufacturer shall be satisfied. The connections between all the wiring terminals and the batteries shall be inspected and
tightened at least once a year. Otherwise it may cause fire!
b) The battery appearance must be inspected before accepting and using the battery. If there exists any package damage, dirty
battery terminal, terminal erosion, rust, or enclosure crack, deformation or liquid leakage, replace it with a new battery. Otherwise,
battery capacity reduction, electric leakage or fire may be caused.
Battery damaged during handling or transportation After a week of normal charge/discharge experiment
c) The battery is very heavy. Please use proper method to move and lift the battery, so as to prevent any damage to human being or
the battery terminal. Severe damage to the battery may cause fire.
d) The battery connecting terminal shall not be subject to any force, such as the pulling force or twisting force of the cable, otherwise,
the internal connection of the battery may be damaged. Severe damage to the battery may cause fire.
e) The battery shall be installed and stored in a clean, cool and dry environment. Do not install the battery in a sealed battery chamber
or a sealed room. The battery room ventilation shall at least meet the requirement of EN50272-2001. Otherwise, battery bulging, fire or
even human injury may be caused.
f) The battery shall be installed far away from the heating products (e.g. transformer), used or stored far away from any fire source, and
shall not be burnt or put into fire for heating. Otherwise, battery leakage, bulging, fire or explosion may be caused.
g) Do not directly connect any conductor between the positive and negative terminals of the battery. Remove the finger rings, watch,
necklace, bracelet and other meta items before operating the battery, and ensure that the tools (e.g., wrench) are covered with

Warning: hazardous battery voltage present behind covers
insulating material. Otherwise, battery burning, human death/injury or explosion may be caused.
h) Do not disassemble, modify or demolish the battery. Otherwise, battery short circuit, liquid leakage or even human injury may be
caused.
i) Clean the battery enclosure with the wringed wet cloth. To avoid any static or arcing, do not use dry cloth or duster to clean the
battery. Do not use the organic solvent (such as thinner, gasoline, volatile oil) to clean the battery. Otherwise, the battery enclosure
may be cracked. In worst case, fire may be caused.
j) The battery has diluted sulfuric acid. In normal use, the diluted sulfuric acid will be absorbed to the baffle and polar plate of the
battery. However, if the battery is damaged, the acid may leak from the battery. Therefore, personal protective equipment (e.g.,
protective glasses, rubber gloves and apron) must be used when operating the battery. Otherwise, if the diluted sulfuric acid enters the
eyes, blindness may be caused; if it contacts the skin, the skin may be burnt.
k) The battery may have short circuit, electrolyte dry-up or positive pole erosion failure at the end of its life. If it is still used under this
state, the battery may have thermorunaway, bulging or liquid leakage. Please replace the battery before it becomes this state.
l) Before connecting or disconnecting the battery connection cables, please isolate the charging power.
m) Check if the battery has been unexpectedly earthed. If this is the case, remove the earth connection. Contact with any part of the
earthed battery may result in an electric shock.
6.3 UPS Battery

The UPS generally adopts valve-regulated battery. At present, 'valve-regulated' means the 'sealed type' or 'maintenance free'
mentioned in the past.
The valve-regulated battery is not completely sealed, especially when it is over-charged, there will be gas escape. The
volume of the gas escape is less than the water injection battery. However, during the installation design of the battery,
temperature rise shall be taken into account, and enough room shall be reserved to ensure good ventilation.
Besides, the valve-regulated battery is not maintenance free. The valve-regulated battery must be kept clean, and it shall be
inspected regularly to check if the connection is reliable, and if it is corroded. For details, please refer to 6.14 Battery
Maintenance.
It is suggested to connect no more than 4 strings of batteries in parallel. Batteries of different types, names or newness shall
not be used together. Otherwise, the battery inconsistency will cause frequent over-discharge or under-charge of certain
battery. At last, the battery will have premature failure, and the entire string of battery will have insufficient backup time.
The battery must be stored in fully charged state. The battery will lose certain capacity because of self discharge during the
transportation or storage. Charge the battery before use. During the storage, ensure that the ambient temperature shall not
exceed the range of -15°C ~ +45°C, and the optimal temperature is 20°C ~ 25°C. To compensate for the self discharge of the
battery during the storage, the battery shall be charged every 3 months during the storage. The specific time may differ for
different batteries. For details, refer to the requirement of the battery manufacturer.
It is very important to fully charge the battery before carrying out onsite test on the battery backup time. The test may take
several days. Therefore, it should be conducted after the battery has been subject to uninterrupted float charging for at
least one week.
When the battery has been running for several weeks or subject to two to three charge and discharge cycles, the battery
performance will be increased.
To avoid the battery over-charge or under-charge, please set the battery management parameters according to the
equalizing/float charge voltage and temperature compensation factor specified in the manuals provided by the battery
manufacturer. Please charge the battery immediately after discharge.
6.4 Precautions For Installation Design
Note
Precautions for installation, use and maintenance of the battery are described in the relevant battery manual provided by the battery
manufacturer. The safety precautions described in this section include the important matters that must be considered during the
installation design. The design results may be changed according to the local situations.

6.5 Battery Installation Environment And Number Of Batteries
6.5.1 Installation Environment
Fresh air volume (EN50272-2001)

The operating environment of the battery must be ventilated. During the operation of the battery, the following requirement
for the fresh air ventilation shall be satisfied:
Q=0.05 x n x Igas x Crt x 10 3[m3/h]
Where:
Q―The fresh air ventilation volume per hour, the unit is m3/h
n―Number of cells
Igas―The gas evolving current density under battery float charging or boost charge conditions, the unit is mA/Ah
Igas=1, under the float charging condition of 2.25V/cell
Igas=8, under the boost charge condition of 2.35V/cell
Crt―20hr battery rated capacity
Temperature
Table 6-1 Range of ambient temperature
Temperature
Type Remark
value
Recommended
optimal 20°C ~ 25°C The ambient temperature for the battery operation shall not be too high or too low.
temperature If the average operating temperature of the battery rises from 25°C to 35°C, the service life
Short time of the battery will be reduced by 50%. If the operating temperature of the battery is over
allowable -15°C ~ 45°C 40°C, the service life of the battery will be reduced exponentially each day
temperature
The higher the temperature is, the shorter the battery service life will be. At low temperature, the charge/discharge
performance of the battery will be significantly reduced.
The battery must be installed in cool and dry environment with the humidity less than 90%, and be protected from the heat
source and direct sunshine.
The ambient temperature, ventilation, space, float/boost charge voltage and ripple current will affect the battery
temperature. Uneven temperature among the battery strings will cause uneven voltage distribution and thus result in
problem. Therefore, it is very important to maintain balanced temperature in the battery string, and the temperature
difference between batteries of different layers shall be kept within 3°C. Valve-regulated battery is very sensitive to the
temperature, therefore the valve-regulated battery shall be used in 15°C ~ 25°C. If the battery cabinet is installed near the
UPS, the maximum design ambient temperature shall be determined according to the battery rather than the UPS. That is, if
valve-regulated battery is used, the indoor ambient temperature shall be 15°C ~ 25°C rather than the operating temperature
range of the main equipment. Under the precondition that the average temperature will not exceed 25°C, it is allowed to
have short time temperature deviation.
6.5.2 Number Of Batteries
Set the nominal DC bus voltage and battery floating voltage to 518Vdc according to the rated I/O voltage of the UPS, so as
to ensure the expected cell battery float voltage is 2.25V. The number of batteries, EOD voltage, and float charging voltage
under the 380V/400V/415V voltage system are consistent, as shown in Table 6-2.
Table 6-2 Number of batteries
Parameter 380V/400V/415V
Number of cells (standard) 192 ~ 264
EOD voltage 1.60Vdc/Cell ~ 1.90Vdc/Cell, 1.63V/cell recommended
Float charging voltage 2.2Vdc/Cell ~ 2.3Vdc/Cell, 2.27V/cell recommended

6.6 Battery Protection
Important
It is recommended to use the Vertiv BCB to protect against the risk. If the user's switch does not satisfy the needs, then risk may occur.
The battery is connected to the UPS through the BCB. The BCB can be manually closed and has the electronic tripping
device controlled by the UPS control circuit. If the battery adopts rack mounting (or is far away from the UPS cabinet), the
BCB shall be installed as close to the battery as possible, and the wiring distance of the power and signal cables connected
to the UPS shall be minimized.
The BCB has the following features:
⚫ Isolated with the battery; safe and reliable
⚫ Short circuit protection
⚫ In case the inverter is locked because of battery under-voltage, the circuit breaker will be disconnected automatically
to avoid battery over-discharge
⚫ If remote EPO button is installed, the EPO button can be used to disconnect the circuit breaker
⚫ Mis-operation protection
To obtain the required backup time, the batteries may be connected in parallel. In this situation, the BCB shall be installed in
the after-stage of all the paralleled batteries.
Note
Only trained personnel shall operate and maintain the battery circuit breaker.
6.7 Battery Installation And Connection
Warning
Only qualified engineer shall install and connect the batteries. The battery has hazardous high voltage, and ruqires reliable insulated
tools for safety protection.
6.7.1 Battery Installation
1. Before installation, check the battery appearance to ensure that there is no damage, inspect and count the accessories,
and carefully read this manual and the user manual or installation instruction provided by the battery manufacturer.
2. There shall be at least 10mm gap between the batteries in vertical direction, to ensure the free circulation of the ambient
air of the batteries.
3. Certain clearance shall be maintained between the battery top and the upper layer to facilitate the monitoring and
maintenance of the battery.
4. The batteries shall be installed from the bottom layer to top layer, so as to avoid a too high gravity center. The battery
shall be properly installed and protected from vibration or shock.
6.7.2 Battery Connection
1. All the battery cabinets or battery racks must be connected together and properly grounded.
2. When multiple batteries are used, they shall be connected in series and then in parallel. Before loading and power-up, it
must be detected that the total voltage of the batteries is as specified. The negative and positive poles of the batteries must
be connected to the negative and positive battery terminals of the UPS according to the labels on the battery and UPS. If
the battery is reversely connected, explosion and fire may be caused, it may result in battery and UPS damage or even
human injury.
3. When the battery cable connection is finished, install insulating shield for the terminals.

4. When connecting the cable between the battery terminal and the BCB, the BCB terminal shall be connected first.
5. The bending radius of the cable shall be larger than 10D, wherein D is the outer diameter of the cable.
6. When the battery cable is connected, it is prohibited to pull the battery cable or the cable terminal.
7. Do not cross the battery cables during the connection, and do not tie the battery cables together.
8. See Figure 6-1 for battery connection.
Top layer Middle layer Bottom layer
- + - + - + - + - + - +
- + - + - + - + - + - +
- + - + - + - + - + - +
- + - + - + - + - + - +
BCB- BCB+
BCB N
Figure 6-1 Connection of batteries
6.8 Design Of Battery Room

No matter which type of installation system is adopted, the following items shall be paid special attention to (refer to
Figure 6-2):
Layout of cells
No matter which battery installation system is used, the battery shall be located in a matter that it will not contact two naked
live parts with the potential difference over 150V at the same time. If it is unavoidable, insulated terminal shield and insulated
cable shall be used for the connection.
Workbench
The workbench (or pedal) must be skid-proof and insulated, and at least 1m wide.
Wiring
All the wiring distances shall be minimized.
BCB
The BCB is generally installed in the wall-mounted box near the battery.
Figure 6-2 Design of battery room

6.9 BCB Cabinet (Optional)

The BCB cabinet can also electrically isolate the UPS from the battery to minimize the danger of the service personnel at
work.
The BCB provides the following functions:
⚫ Short circuit protection and EOD protection. The BCB opens automatically when the battery voltage drops to the
EOD voltage point
⚫ Support the UPS EPO function. The BCB opens automatically when the EPO switch on the touch screen of the UPS
is pressed
Table 6-3 provides the mechanical specifications of the BCB cabinet.
Table 6-3 Parameters of BCB cabinet
Dimensions (H × W × D) (mm) Weight (kg) Recommended screw
650 × 1000 × 285 64 M8
The BCB cabinet should be installed as close as possible to the battery. It can be installed on a horizontal surface or
wall-mounted.
Refer to Figure 6-3 ~ Figure 6-4 to install and connect the BCB cabinet. There are connection terminals in the BCB cabinet
for connecting the power cables from the UPS and battery. Before UPS start-up, lead the signal cables out of the BCB
cabinet and then connect them to the left port of J22 of UPS bypass control module.
Note
1. The BCB cabinet can use top cable entry and bottom cable entry. It provides two big and one small cable entry holes on both the top
plate and bottom plate. The big ones are for power cable entry, and the small one is for signal cable entry. After connection, take
appropriate measures to seal the cable entry holes.
2. The signal cable W812 must be run separate from the battery power cables. W812 is a shield cable, both ends of its shield layer must
be connected to the enclosure. The UPS and BCB cabinet must be earthed separately.
3. If you need to connect two or more BCB boxes in parallel, note that the connection cables of the BCB boxes should be in the same
length to ensure good load sharing among the BCB boxes, thus avoiding misaction of one of the BCBs due to load sharing imbalance.
The number of the parallel-connected BCB boxes should not exceed four.
4. Make sure that the UPS rectifier has started before closing the BCB.
600
BCB-BOX
1045
Installation hole
Figure 6-3 Front dimension of BCB cabinet (unit: mm)

Current transformer
Current transform of battery
er of batt ery
ground fault
ground fault detector
detector
TopTop
cable entry
cable entryhole
hole
Top plate
Top plat e
Battery terminal
Batt ery t erm inal(+)
(+)
Battery terminal
Batt ery t erm inal(N)
(N) Battery terminal
Bat tery term inal (-) (-)
Control board of battery
Cont rol board of bat tery
groud
ground fault detector
fault detector
BCB
BCB
Earth bar
Eart h bar
UPSUPS
terminal
t erm inal(+)
(+)
UPSUPS
terminal
t erm inal(N)
(N)
UPSUPS
terminal
term inal(-)
(-) BCB control
BCB cont board
rol board
Bottom Bottom
hole Bott plate
om plate
Bott om cable entryhole
cable entry
Figure 6-4 Internal structure of BCB box
6.10 Battery Temperature Sensor (Optional)

Vertiv provides an optional battery temperature sensor which can measure the temperature about four positions. When
using multiple battery temperature sensors, the monitor selects the highest temperature detected among them for display.
The battery temperature measuring probe should be transferred by the measured points box and be connected to the X103
~ X106 ports on UHW241C2 board in the battery switch cabinet, and the X108 should be connected to PIN number of J22 of
the UPS bypass control module. Follow Figure 6-5 to route the cables.

UPS-
N
J2
BAT+ N BAT-
+ N -
UHW241M5
Fuse
Battery
1 2 3 4J1
Battery temperature
DC-
DC+ sensor kit
To CT_I1,K1 V_N
1 2
J4
V_P J1
X103
ULC366SC1
To CT_I2,K2 V_THIRD2
1 2
X104
UHW241C2
J7
V_THIRD1
C2_1
J5
X105
X106
X108
Battery ground fault kit
1 3 5 7 11 13 15 17 19
J22
Bypass control module
Figure 6-5 Connection diagram of internal options of overall BCB switch cabinet
6.11 Battery Ground Fault Detector (Optional)

Vertiv provides an optional battery ground fault detector. It includes a mutual inductor and a PCB, which should be installed
in the BCB cabinet. If the BCB cabinet uses top cable entry, the mutual inductor should be installed on the inside of the top
plate of the BCB cabinet (see Figure 6-4); if the BCB cabinet uses bottom cable entry, the mutual inductor should be
installed on the inside of the bottom plate of the BCB cabinet. Connect the PCB as shown in Figure 6-5.
Note
If a battery ground fault detector is installed, the positive, negative and neutral battery cables from the battery into the BCB cabinet
must be routed through the hole of the mutual inductor of the battery ground fault detector, while other cables must bypass the mutual
inductor for connection.

6.12 BCB Reference Current And Connection

Table 6-4 provides recommended BCB rated current and battery maximum discharge current at full load. Refer to Table 3B
in IEC60950-1, and select appropriate cable CSA according to local electrical regulations.
Table 6-4 BCB rated current and battery max. discharge current at full load (recommended)
UPS rating（kVA）
Items Unit
250kVA
Rated battery discharge current at
A 857
full load
32-block battery
Reference rated current of BCB A 800
CSA of connection cable mm2 2 × 240
A 806
full load
34-block battery
A 761
full load
36-block battery
A 720
38-block full load
battery Reference rated current of BCB A 800
A 683
full load
40-block battery
A 650
full load
42-block battery
A 620
44-block full load
battery Reference rated current of BCB A 800

6.13 Battery Maintenance

For the battery maintenance and maintenance precautions, refer to IEEE-Std-1188-2005 and the relevant manuals provided
by the battery manufacturer.
Note
1. Periodically check the screws of the battery connection parts and confirm that they are firmly tightened. If there is any loosened screw,
tighten it immediately.
2. Ensure that all safety devices operate normally, and that the battery management parameters are set properly.
3. Measure and record the air temperature inside the battery room.
4. Check to ensure that the battery terminals have no damage or heat generating trace, and the battery enclosure and terminal shields
are intact.
6.14 Disposal Of Used Battery

If the battery has liquid leakage or is damaged, place the battery into the container that can withstand sulphuric acid and
discard it according to the local regulations.
Used lead acid storage battery belongs to dangerous waste, and it is a key item for used battery pollution control. The
storage, transportation, use and disposal of the battery shall comply with the national and local laws and regulations on
dangerous waste and used battery pollution prevention and other standards.
According to the relevant national regulations, the used lead acid storage battery must be recycled and shall not be
disposed of with other methods. Random discard or any other improper disposal of the used lead acid storage battery may
cause severe environment pollution and the relevant person will be investigated of corresponding legal responsibilities.

86 Chapter 7 Parallel System And LBS System
Chapter 7 Parallel System And LBS System
This chapter gives details on the installation of the parallel system and LBS system.
7.1 General
The parallel system can comprise of up to four UPS modules of the same power rating and connected in parallel without the
need for a centralized mains static bypass. Instead the bypass static switches of each UPS share the load when the system
transfers to the mains bypass supply.
From a 'power' viewpoint, each module is internally identical to the 'single module' configuration. A parallel system requires
inter-module control signals to manage the load sharing, synchronizing and bypass switching. The control signals are
connected through the parallel cables, which are multi-way ribbon cables connected between the units of the system to
form a ring.
When two or more modules are to be connected in parallel, it is recommended that inductor should be inserted in the static
bypass line. This can be installed internal to the UPS as an option.
7.2 System Installation Procedures

The basic installation procedure of a parallel system is the same as that of single module system. This section only
introduces the installation procedures specific to the parallel system. The installation of a parallel UPS should follow the
installation procedure for a single UPS module with the additional requirements detailed in this section.
7.2.1 Preliminary Checks
Be sure that the options of the parallel cables are correct, and that the modules are of the same rating, model, and with the
same software and hardware release.
Warning
To achieve coordinated operation of the modules in the parallel system, it is required to configure each module separately using Vertiv
setting software. This must be done by Vertiv service personnel.
7.2.2 Cabinet Installation
Place the UPS modules side by side and interconnect as shown in Figure 7-1. The output distribution mode shown in Figure
7-1 is recommended to facilitate maintenance and system testing.

Chapter 7 Parallel System And LBS System 87
Input power External

supply bypass switch
Mains input Mains input

L1,L2,L3,N L1,L2,L3,N
External maintenance bypass

Q1 Q1
Rectifier Q2 Rectifier Q2
Charger Q3 Charger Q3
BCB Static BCB Static
switch switch
Battery 1 Inverter Battery 2 Inverter
Q5 Q5
L1, L2,L3,N L1, L2,L3,N
Q1EXT Q2EXT
QUPS QBYP
Output distribution
To load

Figure 7-1 Schematic of typical parallel system (with common input, separate batteries and output)
Warning
1. High earth leakage current: Earth connection is critical before connecting the input supply (including both mains supply and battery).
2. The equipment must be earthed in accordance with the local electrical code of practice.
Refer to 3.1.9 External Protective Device.
7.2.4 Power Cable
The power cable wiring is similar to that of the UPS module. Refer to 3.1 Wiring Of Power Cable.
The bypass and rectifier input supplies must use the same neutral line input terminal. If the input has a current leakage
protective device, the current leakage protective device must be fitted upstream of the neutral line input terminal.
Note
1. The power cables (including the bypass input cables and UPS output cables) of each UPS module should be of the same length and
specifications to facilitate load sharing.
2. The UPS adopts common input configuration and split bypass configuration. If the mains input and bypass input come from two
different transformers, then these two transformers should share one grounding grid.
3. Same bypass source for each UPS.
7.2.5 Parallel Cable
Shielded and double-insulated parallel cables available in lengths 5m, 10m and 15m must be interconnected in a ring
configuration between the UPS modules, as shown in Figure 7-2. Method: connect a module parallel cable from its PARA1
port to the PARA2 port of another module. Follow this method to connect other parallel cables.
The parallel port J20 is provided on the front panel of the bypass module, as shown in Figure 7-3.

The ring connection ensures the reliability of the control of the parallel system. Be sure to verify the reliable cable
connection before starting up the system!
UPS
UPS 1
1 UPS
UPS22 UPS
UPS 33 UPS
UPS 44
LBS
LBS 11 PARA
PARA 11 LBS
LBS1
1 PARA
PARA 11 LBS
LBS 11 PARA 1
PARA 1 LBS
LBS 11 PARA
PARA 11
LBS
LBS 22 PARA
PARA 22 LBS
LBS2
2 PARA
PARA 22 LBS
LBS 22 PARA
PARA 22 LBS
LBS 22 PARA
PARA 2 2
Figure 7-2 Parallel signal cables connection (Parallel system)

J20
J20
UPS 1 UPS 2 UPS 3 UPS 4
LBS 1 PARA 1 LBS 1 PARA 1 LBS 1 PARA 1 LBS 1 PARA 1
Parallel cable
Parallel cable
Figure 7-3 Location ofLBS

parallel
cable port J20 on bypass control module
7.2.6 Remote EPO
In addition to the EPO switch provided on the touch screen of each UPS module for controlling the EPO of each module
respectively, the parallel system also provides remote EPO function for controlling all UPS modules to shut down
simultaneously from a remote terminal, as shown in Figure 7-4.
UPS 1 UPS 2
Note
LBS 1 PARA 1 LBS 1 PARA 1
1. The remote EPO switch must provide dry contact signal, which is normally open or normally closed.
LBS 2 PARA 2 LBS 2 PARA 2
2. The open circuit voltage provided is 12Vdc, < 20mA.
3. The external EPO device can be composed of another control system which can disconnect UPS mains supply or bypass input.
4. Pins 1 and 2 of the normally closed EPO-J2 port on the bypass module have been linked in factory.
LBS cable

UPS
UPS22
J2
J3 2.3
3.3 Bypass control
Communication
J2
J3 2.4
3.4 module
board
JJ2
J32 3.3
2.3
2.3
J3
J2 3.4
2.4
Bypass control
Communication
board
board
module
UPS
UPS11
EPO
EPO
UPS
UPS22
J2
J3 2.1
3.1 Bypass control
Communication
J2
J3 2.2
3.2 board
module
J2
J3 2.1
3.1
J2 2.2
J3 3.2
Bypass control
Communication
board
module
UPS
UPS11
EPO
EPO
Figure 7-4 EPO circuit diagram
Note: In Figure 7-4, the upper one is Normally Open type, and the lower one is Normally Closed type.
7.3 Operation Procedures For Parallel System
Warning
If UPS input uses RCD, differential switch is only used in the system's bypass mains supply. At the moment of electrical connection,
current may not be immediately separated, which may result in the tripping of RCCB respectively.
Only one step is needed for once, and only after finishing this operation step of each UPS module, the next step can be
carried on.
7.3.1 Startup Procedures In Normal Mode
These procedures are applicable to start the UPS under total power-down state, which means the UPS or the maintenance
bypass switch has not supplied the load before. Make sure UPS has been completely installed and commissioned by the
engineer, and external power supply switch has been turned off.
Warning
1. These procedures result in mains voltage being applied to the UPS output terminals.
2. If any load equipment is connected to the UPS output terminals, check with the user that it is safe to apply power. If the load is not
ready to receive power, disconnect the downstream load switch, and stick a warning label on the connection point of the load.

Use the following procedures to turn on the UPS from a fully powered down condition.
1. Confirm that the total external maintenance bypass switches are disconnected. Open the front door of each UPS in turn,
ensure that the internal maintenance bypass switch Q3 is disconnected, while the input cables and copper bars are reliably
connected, and the parallel cables are firmly connected.
Warning
2. Close the total bypass input switches.
any) of each UPS in turn.
About 25 seconds later, confirm that the touch screen shows the rectifier power supply and the bypass power supply are
normal; if not, check whether the switches Q1 and Q2 are closed. Then the rectifier starts up. About 30 seconds after the
rectifier enters normal operation, the bypass static switch is closed.
4. When the rectifier start process is finished, close the external BCB.
5. Parallel system sync start-up. Press the INVERTER ON key under Operation, and the inverter starts up.
Figure 7-5 Parallel system sync start-up
After all the UPS inverters start-up, the whole UPS system will power the load.
7.3.2 Maintenance Bypass Procedures
Warning
If the UPS system is composed of more than 2 parallel UPS modules, and the load capacity exceeds the single module capacity, do not
use the internal maintenance bypass switch.

This operation will make the load transfer from UPS power supply protection state to direct connection with AC input
bypass state.
Caution: power supply interruption danger of the load
Before performing this procedure, you should check the LED information first, and make sure the bypass is normal and inverter
synchronized. Otherwise, it may result in the load power interruption for a while.
1. Parallel system sync shutdown. Press the INVERTER OFF key under Operation of each UPS . The power
flow chart displays that the inverter is off, the buzzer alarms, and the load transfers to the static bypass, then the inverter
shuts down.
Figure 7-6 Parallel system sync shutdown
Note
Press the SILENCE OFF button can silence the alarm, but the alarm message of the touch screen does not disappear until the alarm
status is cleared.
2. Close the UPS external total maintenance bypass switches, and do not close the internal maintenance bypass switch Q3
of each UPS.
3. At this moment, the external total maintenance bypass should be parallel connected with each UPS's static bypass.
4. At this moment, the touch screen of each UPS displays ' Maint. Switch Closed'.
5. Disconnect the output switch Q5 of each UPS in turn, and the maintenance bypass can supply power to the load.
Caution
When the UPS is in maintenance mode, the load does not have the mains abnormal protection.
6. Pressing the EPO button of each UPS stops the operation of rectifier, inverter, static switch and battery, but this action will
not affect the maintenance bypass power the load normally.
Note
In maintenance mode, the load is directly fed by the mains power instead of the pure AC power from the inverter.

7. Disconnect the rectifier input switch Q1 and bypass input switch Q2 of each UPS in turn.
At the moment, all the internal power supply is off and the touch screen does not display any more.
Warning
1. If the maintenance is required, wait 10 minutes for the internal DC bus capacitance discharging.
2. The parts of UPS circuits also have hazardous voltage, though the rectifier input switch, bypass input switch and battery switch are
disconnected. Therefore, the UPS maintenance is applicable to qualified personnel only.
7.3.3 Procedures For Isolating One UPS Module From Parallel System
Important
These procedures shall only be carried out by service personnel of Vertiv or under their guidance.
Warning
Before operation, confirm that the system capacity has redundancy to avoid system shutdown due to overload.
The following procedures apply when one UPS module must be isolated from the parallel system for repair due to serious
fault:
1. Pressing the EPO button stops the operation of rectifier, inverter, static switch and battery, but this action will not affect
other UPSs in parallel system to power the load normally.
2. Disconnect the external power mains switch, rectifier input switch Q1, external power bypass switch, bypass input switch
Q2, output switch Q5, BCB and single module external output switch.
3. Correctly connect the remaining parallel cables in other single modules, refer to 7.2.5 Parallel Cables.
Warning
7.3.4 Procedures For Inserting One Isolated UPS Module In Parallel System
Important
These procedures shall only be carried out by service personnel of Vertiv or under their guidance.
The following procedures are used to reintegrate a UPS module that has been previously isolated from the parallel system:
1. Confirm that the I/O cable, battery cable and parallel cable of the single module are correctly connected.
2. Confirm that the maintenance bypass switch Q3 or the single module external maintenance switch is disconnected. Close
the output switch Q5, external output switch, external power bypass switch, bypass input switch Q2, rectifier input switch Q1,
and external power mains switch of each UPS in turn.
3. When the power flow of single module rectifier runs, close the BCB and then press the INVERTER ON key on the touch
screen. al -5.
At this point, the single module inverter starts. Few seconds later, the single modules form the parallel system for operation.
7.3.5 Procedures For Completely Powering Down UPS
Complete UPS shutdown and load power-off should follow this procedure. All power switches, isolating switches and
breakers are disconnected, and then UPS no longer supplies power to the load.

Caution
The following procedures will cut off the load power, making the load completely power off.
1. Pressing the EPO button of each UPS stops the operation of rectifier, inverter, static switch and battery.
2. Disconnect the rectifier input switch Q1 and bypass input switch Q2 of each UPS. At the moment, all the internal power
supply is closed and the touch screen does not display any more.
3. Disconnect the output switch Q5 of each UPS.
Warning
Warning: hazardous battery voltage
The battery terminals still have hazardous voltage after the UPS complete shutdown.
7.3.6 Procedures For Complete UPS Shutdown While Maintaining Power To Load
The following procedures are applicable for completely powering down the UPS and still keeping the power supply to the
load. Refer to the procedures in 7.3.2 Maintenance Bypass Procedures.
7.4 LBS System
7.4.1 Cabinet Installation
An LBS system consists of two independent UPS systems, each containing one or more parallel UPS modules, as shown in
Figure 7-7. The LBS system has high reliability and is applicable to the load with multiple inputs. For single-input load, an
STS can be installed to feed power to the load.
The system uses the LBS cables to keep the output of the two independent (or parallel) UPS systems in synchronization.
One system is designated as the master, the other is designated as the slave. The operation modes of the parallel system
comprise master and slave operation in normal or bypass mode.
Place the UPS modules side by side and interconnect the UPS modules according to the following instructions.

Bypass Bypass
Rectifier Rectifier
Q1 Q2 Q3 Q1 Q2 Q3
Q5 Q5
LBS
STS
To load
Figure 7-7 LBS system (UPS module)
Note
In a dual-bus system, the two UPS systems must have the same voltage and frequency, and the load should not exceed the power
rating of a UPS module system.
Refer to 3.1.9 External Protective Device.
7.4.3 Power Cable
The power cable of dual-bus power system is similar to that of single system. Refer to 3.1 Wiring Of Power Cable.
The bypass and rectifier input supplies must use the same neutral line input terminal. If the input has a current leakage
protective device, the current leakage protective device must be fitted upstream of the neutral line input terminal.
7.4.4 LBS Cable
For 250kVA dual bus system, connect the optional LBS cables (10m, 15m, 20m) between the LBS ports (J19) of the two UPS
systems shown in Figure 7-8. The J19 ports are provided on the front panel of the bypass module, as shown in Figure 7-9.
Note
You must use the shortest LBS cable to suit the application and must not coil excess. Meanwhile, separate the LBS cable from the power
cables to prevent electrical inteferences.

UPS 11 UPS 22
LBS 11
LBS PARA
PARA11 LBS 11
LBS PARA
PARA11
LBS 22
LBS PARA
PARA22 LBS 22
LBS PARA
PARA22
LBS电缆
LBS cable
LBS cable
LBS cable
UPS 1 UPS 2 UPS 1 UPS 2

UPS 1 UPS 2 UPS 3
LBS 1 PARA 1 LBS 1 PARA 1 LBS 1 PARA 1 LBS
LBS 2 PARA 2 LBS 2 PARA 2 LBS 2 PARA 2 LBS
Parallel cable Parallel cable

Parallel cable 并机电缆 Parallel cable
LBS cable LBS电缆
Figure 7-8 Connection of typical LBS system (UPS module, parallel system)
J19
Figure 7-9 LBS port (J19) on bypass module
7.5 LBS Adapter

The LBS box is designed to extend the LBS function up to 150m between the two UPS modules or systems of a dual bus
system, and it also enables an APM UPS to synchronize with other UPS models. See 8.2.8 LBS Adapter for details.

96 Chapter 8 Options
Chapter 8 Options
This chapter provides the UPS option list, and introduces the functions, installation and configuration of each option.
8.1 Option List

Table 8-1 Option list
No. Option name Remark Model
Battery temperature sensor
1 / 023500U7
assembly
Bypass load sharing inductor
2 / 02010032
assembly
3 Battery ground fault assembly / 02312383
4 Seismic anchor assembly / 02010038

5 IS-UNITY-DP card Intellislot prots 1 ~ 3 (Port 1 or 2 recommended) 03020728
6 IS-UNITY-LIFE card Intellislot prots 1 ~ 3 (Port 1 or 2 recommended) 03020753
7 SIC card Intellislot prots 1 ~ 3 (Port 1 or 2 recommended) 02351817
8 IS-RELAY card Intellislot port 1 02351105
Lightning proof assembly (Class C) 02010029
9 Lightning proof assembly
Lightning proof assembly (Class D) 02010030
04112069 (10m), 04112070
10 LBS cable Available in 10m, 15m, 20m
(15m), 04112071 (20m)
0235A04V (50m)
11 LBS adapter Available in 50m, 150m
0235A04Y (150m)
12 BCB cabinet BCB cabinet 02312201
When selecting 02312391, 04113705 must be selected
13 BCB controller cable 04113705
together
14 Common input assembly / 02010031
15 Top fan assembly / 02010048
04112066 (5m), 04112067
16 Parallel cable Available in 5m, 10m, 15m
(10m), 04112068 (15m)
8.2 Option Introduction
8.2.1 Battery Temperature Sensor Assembly
A battery temperature sensor is used to measure the battery temperature. At this moment, the temperature sensor is
connected with the UPS internal logic circuit.
With this feature fitted, the nominal float voltage supplied to the battery is adjusted so as to be inversely proportional to the
ambient temperature of the battery cabinet or battery room. This prevents the battery being over charged at high ambient
temperatures.
Preparation
1. Prepare the installation tools, including a cross head screwdriver.
2. Check that all installation materials are present and complete, including a battery temperature sensor.

Chapter 8 Options 97
Procedures
Warning
1. Connect the cables strictly following the instructions. Failure to observe this may cause damage to the UPS and the battery.
2. Shut down the UPS when installing the battery temperature sensor. During installation, do not touch the battery terminals, bared
copper bars and components.
1. Shut down the UPS completely.

a) Close the load.
b) All the TOUCH SCREENS are off, wait five minutes for the internal DC bus capacitors of the UPS complete discharging.
2. Connect one end of the specified cable to either port of the battery temperature sensor, and the other end to
corresponding port of IS-Relay card. Refer to Figure 6-5 for details.
3. Route and pack the cables in order. Note that the cables should be routed separately from the power cables, to avoid EMI.
8.2.2 Battery Ground Fault Assembly
The UPS provides a battery ground fault detector to detect and remove battery ground fault so as to ensure reliable system
operation. Residual current range monitored: 30mA ~ 5000mA; power supply: UHW241M5 auxiliary power supply board.
When a battery ground fault is detected, an alarm will appear on the UPS display panel.
The battery ground fault detector includes a mutual inductor and a PCB, which should be installed in the BCB cabinet. For
the installation and connection of the battery ground fault detector, refer to 6.12 Battery Ground Fault Detector (Optional).
8.2.3 Seismic Anchor Assembly
UPS provides seismic anchor assemblys to avoid and reduce the damage to UPS caused by earthquake or vibration.
After fixing the UPS onto the concrete floor, the seismic anchor assemblys should achieve Class 2 requirement of Table 2 in
IEC60068.3.3 and satisfy the UBC 1994 standard (earthquake area 4 from strong to very strong).
Warning
1. Only Vertiv authorized engineers shall carry out the installation.

2. Carry out the installation strictly following the instructions. Failure to observe this could cause personnel injury or damage to the UPS
and seismic anchor assemblys.
Preparation
1. Prepare installation tools, including a cross head screwdriver, a torque spanner and an adjustable spanner.
2. Check that all installation materials are present and complete, including two seismic anchors, 12 M8 × 30 tapping screws,
four M12 expansion bolts.
Procedures
Use M8 × 30 hex sems screws (12 pcs) to fix the two seismic anchors located at bottom of both the cabinet front and rear.
Then use four M12 expansion bolts to fix the two seismic anchors on the ground, as shown in Figure 8-1.
M8*30M8*25
sems screw
30 六角组合螺钉
M12 expansion bolt

M12膨胀螺栓
Seismic anchor
防震组件
Figure 8-1 Installing seismic anchors

8.2.4 IS-UNITY-DP Card
Important
It is recommended to use the shielded cables to enhance the EMC.
The appearance of the IS-UNITY-DP card is shown in Figure 8-2.
Figure 8-2 Appearance of IS-UNITY-DP card
For further description of the IS-UNITY-DP card, refer to Liebert IntelliSlotTM Unity Card User Manual-Web, SNMP, Modbus,
BACnet, YDN23.
The installation method of the IS-UNITY-DP card is the same as that of the SIC card described in 8.2.6 SIC card. Refer to
3.2.10 Signal Cable Connection Steps for the cabling and routing of the signal cables.
8.2.5 IS-UNITY-LIFE Card
Important
It is recommended to use the shielded cables to enhance the EMC.
The appearance of the IS-UNITY-LIFE card is shown in Figure 8-3.
Figure 8-3 Appearance of IS-UNITY-LIFE card
For further description of the IS-UNITY-LIFE card, refer to Liebert IntelliSlotTM Unity Card User Manual-Web, SNMP, Modbus,
BACnet, YDN23.
The installation method of the IS-UNITY-LIFE card is the same as that of the SIC card described in 8.2.6 SIC card. Refer to
3.2.10 Signal Cable Connection Steps for the cabling and routing of the signal cables.
8.2.6 SIC Card
The SIC card is a network management card. It can make the UPS developed by Vertiv Tech Co., Ltd have network
communication capability. It can also be connected to the IRM series sensor to provide environment monitoring function.
When the intelligent equipment generates an alarm, the SIC card can notify the user by recording the log, sending trap
information, and sending a mail. The SIC card supports Modbus RTU protocol.
Preparation
1. Prepare the installation tools, including a cross head screwdriver.
2. Check that all installation materials are present and complete, including an SIC card.
Procedures
Note
There is no need to shut down the UPS during SIC card installation, because the SIC card is hot pluggable.

Warning
Some electron components in SIC card are sensitive to static, therefore, do not touch the electron components or circuit in SIC card by
hand or other conductive materials, so as to protect the SIC card against static shock. When removing or installing the SIC card, hold
the card side edge to operate it.
Figure 8-4 Appearance of SIC card
The SIC card (see Figure 8-4) should be installed in the Intellislot port (see Figure 3-5) in the UPS. See Table 3-9 for
installation positions of optional cards.
Method for installation:
1. Remove the cover of Intellislot port. Note to reserve the removed screws and take care of the cover for future use.

2. Insert the SIC card (along two sides of the Intellislot port) into the port position recommended in Table 3-9, and then
fasten the screws.
For more information of the SIC card, refer to Site Interface Web/SNMP Agent Card User Manual in accessory.
Refer to 3.2.10 Signal Cable Connection Steps for the cabling and routing of the signal cables.
8.2.7 IS-Relay Card
The appearance of the IS-Relay card is shown in Figure 8-5.

IS-Relay
Figure 8-5 Appearance of IS-Relay card
The UPS provides IS-Relay card for the user to use the dry contact signal to monitor the UPS.
The functions of the IS-Relay card are listed in Table 8-2.
Table 8-1 Function of UPS IS-Relay card
Pin Function Operation
1 Common-Low Battery
2 Low Battery Closed if low battery point occurs
3 Low Battery Closed if battery is OK
4 Common-UPS Fault
5 UPS Fault Closed if UPS fault occurs
6 UPS Fault Closed if no UPS failure
7 Common-On Battery
8 On Battery Closed if On Battery power (Utility failure)
9 On Battery Closed if not On Battery power (Utility OK)
10 Signal Ground Future release

11 Signal Ground Future release
12 UPS Any-Mode Shutdown Future release
13 Summary Alarm Closed if no alarm conditions are present

14 Summary Alarm Closed if summary alarm occurs
15 Common-Summary Alarm
16 On UPS Closed if On UPS (inverter) power

17 On Bypass Closed if On Bypass
18 Common-On Bypass
For more information of the IS-Relay card, refer to the Liebert IntelliSlot IS-Relay Card User Manual in accessory.
The installation method of the IS-Relay card is the same as that of the SIC card described in 8.2.6 SIC card. Refer to 3.2.10
Signal Cable Connection Steps for the cabling and routing of the signal cables.

8.2.8 LBS Adapter
The LBS adapter is designed to extend the LBS function up to 150m between the two UPS modules or systems of a dual bus
system, and it also enables an APM UPS to synchronize with other UPS models
Appearance
The appearance of the LBS adapter is shown in Figure 8-6.
Figure 8-6 Appearance of LBS adapter
The LBS adapter provides ports, LED indicators and a switch on the front panel, which are described in Table 8-3.
Table 8-2 Description of ports, LED indicators and switch of LBS adapter
Item Description
Power port Connect to phase A, neutral and ground of output of UPS
LED1 (red) Power LED. It illuminates when the power is on, turns off when the power fails
COM1 LBS signal port. Connect to APM UPS
RS485 port. Connect to the other LBS adapter.
Green LED. On: The communication power is OK; off: The communication power fails.
COM2
Yellow LED. On: The LBS adapter is connected to a non-APM UPS; off: The LBS adapter is connected to an
APM UPS
The switch should be placed to right if the LBS adapter is connected to an APM UPS; it should be placed to left
SWITCH
if the LBS adapter is connected to a non-APM UPS
Electrical parameters
The electrical parameters of the LBS adapter are listed in Table 8-4.
Table 8-3 Electrical parameters of LBS adapter
Parameter Specification
Voltage 120Vac ~ 277Vac
Frequency 45Hz ~ 65Hz
Current 1.5A max.
Installation
Warning
Only qualified electrical personnel shall install the LBS adapter, as hazardous voltage may be present at the UPS output terminals.
1. Fix the LBS adapter.

The dimensions of the LBS adapter are shown in Figure 8-7. The LBS adapter can use horizontal installation (see Figure 8-8)
or vertical installation (see Figure 8-9).

216mm
46mm 134mm
Figure 8-7 Dimensions of LBS adapter
Figure 8-8 Horizontal installation
Figure 8-9 Vertical installation
2. Make cable connection.

⚫ APM UPS to APM UPS
See Figure 8-10, the connection procedures are as follows:
a) Connect the power cables of the LBS adapter to the phase A, neutral and ground output of each UPS.
b) Connect the end of the LBS cable with a DB9 port to COM1 port of the LBS adapter, and connect the other end of the
LBS cable with an RJ45 port to the J19 port of the bypass module of the UPS.
c) Connect the communication cable (up to 150m) to the COM2 port of each LBS adapter.
d) Place the switch of both LBS adapters in the right position.
Power ON COM1 COM2 SWITCH Power ON COM1 COM2 SWITCH
LED1 LED1
Power cable Power cable

Connect to APM UPS LBS Connect to APM UPS LBS
cable cable
Communication cable up to 150m
Figure 8-10 Connection between two LBS adapters (APM UPS to APM UPS)
⚫ APM UPS to non-APM UPS

See Figure 8-11, the connection procedures are as follows:
1) Connect the power cables of the LBS adapter to the phase A, neutral and ground output of each UPS.
2) Connect the end of the LBS cable with a DB9 port to COM1 port of the LBS adapter, and connect the other end of the
LBS cable with an RJ45 port to the J19 port of the bypass module of the APM UPS. Make no connection to the COM1 port of
the LBS adapter connected to the non-APM UPS.
3) Connect the communication cable (up to 150m) to the COM2 port of each LBS adapter.

4) Place the switch of the LBS adapter connected to the APM UPS in the right position, and place the switch of the LBS
adapter connected to the non-APM UPS in the left position.
Power ON COM1 COM2 SWITCH Power ON COM1 COM2 SWITCH
LED1 LED1
Power cable Power cable

Connect to APM UPS LBS Connect to non-APM UPS
cable
Communication cable up to 150m
Figure 8-11 Connection between two LBS adapters (APM UPS to non-APM UPS)
8.2.9 BCB Box
For details, reder to 6.9 BCB Cabinet (Option).
8.2.10 LBS Cable
Shielded and double-insulated parallel control cables available in lengths of 10m, 15m and 20m. The LBS cable must be
interconnected in a branch configuration between LBS1 and LBS2 of any UPS modules, as shown in Figure 7-8. When there
is a dual bus for parallel system, one parallel system needs one LBS cable.
8.2.11 LBS Assembly
The LBS assembly contains an LBS adapter and two kinds of cables of different length (50m, 150m).
8.2.12 Common Input Assembly
If the UPS adopts common input configuration, the user should choose common input assembly to short the mains input
terminal and bypass input terminal. It is installed before delivery. If site installation is required, just install the common input
assembly according to Figure 3-2.
8.2.13 Lightning Proof Assembly
The lightning proof assembly has two modes: Class-C and Class-D, you can choose the desired mode according to actual
requirement. If the application environment demand of SPD is not high, no need to install the lightning proof assembly. Note
that either Class-C or Class-D. The protection level of Class-C SPD is higher than Class-D. The SPD is connected to the
mains input copper bar.

8.2.14 Bypass Load Sharing Inductor Assembly
If parallel system mode is required, just configure the bypass load sharing inductor assembly.
8.2.15 Top Fan Assembly
The top fan assembly is installed before delivery. When using the top fan assembly, just seal all rear parts of the UPS, and the
AC fan will execute ventilation from top of the UPS. Note that no objects block the air outlet. The UPS output voltage powers
the AC fan. Before UPS power-on, remove the cover shown in Figure 8-12 and confirm that the switch in 'ON' state.
Remove this cover
Figure 8-12 Removing cover

See Figure 8-13 for dimensions of 250kVA with top fan.
955
Top view
990
2000
100
1000
Front view Side view
900 51
51
850 950
Foot installation hole 1000

Bottom view
Figure 8-13 Dimensions of 250kVA cabinet with top fan (Unit: mm)
8.2.16 Parallel Cable
Shielded and double-insulated parallel cables available in lengths of 5m, 10m and 15m must be interconnected in a ring
configuration between the UPS modules, as shown in Figure 7-2. Method: connect a module parallel cable from its PARA1
port to the PARA2 port of another module. Follow this method to connect other parallel cables.
The ring connection ensures the reliability of the control of the parallel system. Be sure to verify the reliable cable
connection before starting up the system!

106 Chapter 9 Communication
Chapter 9 Communication
The UPS supports SNMP communication, Modbus protocol communication, dry contact communication and Velocity
protocol communication. This chapter provides information relevant to these types of communication.
Selecting 'Velocity' means the system supports the Velocity protocol communication.
9.1 SNMP Protocol Communication

If you need to monitor the UPS through network, you may select the SIC card provided by Vertiv Tech Co., Ltd. This card
supports SNMP protocol.
The SIC card is a network management card. It can make the UPS developed by Vertiv Tech Co., Ltd have real network
communication capability. It can also be connected to the IRM series sensor to provide environment monitoring function.
When the intelligent equipment generates an alarm, the SIC card can notify the user by recording the log, sending trap
information, and sending a mail.
The SIC card provides three approaches for you to monitor your intelligent equipment and equipment room environment:
⚫ Web browser. You can use Web browser to monitor your intelligent equipment and equipment room environment
through the Web server function provided by the SIC card
⚫ Network management system (NMS). You can use NMS to monitor your intelligent equipment and equipment room
environment through the SNMP function provided by the SIC card
⚫ SiteMonitor, network management software for equipment room power and environment. You can use SiteMonitor to
monitor your intelligent equipment and equipment room environment through the TCP/IP interface provided by the SIC
card
The SIC card can also work with the Network Shutdown computer safe shutdown program developed by Vertiv Tech Co., Ltd.
to provide automatic safe shutdown function for your computer installed with Network Shutdown, so as to prevent data loss.
For the installation and setting information of the SIC card, refer to the Site Interface Web/SNMP Agent Card User Manual in
accessory.
9.2 Modbus Protocol Communication

The Modbus protocol communication is supported by the SIC card.
9.3 Dry Contact Communication

The UPS provides the following two dry contact communication approaches:
⚫ IS-Relay card
⚫ Dry contact port
9.3.1 Communication Through IS-Relay Card
The UPS provides an IS-Relay card for the user to use dry contact signals to monitor the UPS. The IS-Relay card should be
installed in an Intellislot port (see Figure 3-5) of the communication box in the cabinet. For the installation and use of the
IS-Relay card, refer to Liebert IntelliSlot IS-Relay Card User Manual.
9.3.2 Communication Through Dry Contact Port
For on-site specific needs, the UPS may need auxiliary connection to achieve functions like acquiring external equipment
status information, providing alarm signals to external devices, and remote EPO. These functions are realized through the
following interfaces on the bypass control module:
⚫ Input dry contact port J26 of external device status information

Chapter 9 Communication 107
⚫ Output dry contact ports J23~J25 of alarm signal

⚫ REPO input port
For the functions and detailed information of these ports, refer to 3.2 Wiring Of Signal Cable.

108 Chapter 10 Service And Maintenance
Chapter 10 Service And Maintenance
The UPS system (including battery) needs regular service and maintenance in long-term operation. This chapter elaborates
on the advice on the service life, regular inspection, maintenance and replacement of the UPS key components. Effective
maintenance of the UPS system can reduce the risk in UPS failure and prolong the UPS service life.
10.1 Safety
Warning
1. Inspection of UPS systems can only be executed by people who have received relevant training, and the inspection and replacement
of devices should only be undertaken by authorized professionals.
2. No user-serviceable parts are located behind covers that require a tool for their removal. Only qualified service personnel are
3. Note that the neutral line has hazardous voltage when servicing the UPS.
10.2 Service Procedures Of Power Module And Bypass Power Module
10.2.1 Notes
1. Only customer service engineers shall service the power modules and bypass module.
2. Remove the power modules and bypass module from top to bottom, so as to prevent cabinet toppling due to high gravity
center.
3. To ensure safety, before servicing the power module, be sure to use a multimeter to verify that the DC bus capacitor
voltage is lower than 60Vdc, and that the voltages between the earth and the components you are going to work on are
under dangerous voltage values, that is, lower than 60Vdc or 42.4Vac peak value.
4. The power modules and bypass modules should be serviced 10 minutes after they are removed, and replug them into the
cabinet after 10 minutes.
10.2.2 Service Procedures Of Power Module
1. Place the ready switch on the front panel of the power module to unready state, at this time, the green indicator beside the
ready switch is off and the red indicator is on.
2. Wait for two minutes, ensure that the red indicator on the power module is solid on. Remove the fixing screws on both
sides of the front panel of the module, and pull the module out of the cabinet.
Note
The module will be blocked by a spring piece on the left side of the module when the module is pulled out of the cabinet halfway. At this
point, you must press the spring piece before you continue to pull the module out.
3. After servicing the module, check that the address of this module is different from those of other modules and that the
address ranges from 1 to 5. Check that the ready switch is in unready state.
4. Push the module (at least 10s after another) into the cabinet, and tighten the screws on both sides.
5. Wait for two minutes, place the ready switch of the module to the left position, and the module will connect to the system
automatically.

Chapter 10 Service And Maintenance 109
10.2.3 Service Procedures Of Bypass Power Module
Service procedures in bypass mode

1. Close the maintenance bypass switch, the UPS transfers to the maintenance mode, then press the EPO button.
2. Place the ready switch on the front panel of the bypass power module to unready state, at this time, the red indicator
beside the ready switch is on.
3. Wait for two minutes, confirm that the red indicator beside the ready switch is always on, and then remove the fixing
screws on both sides of the front panel of the bypass power module, and pull the module out of the cabinet, then maintain
the module after waiting for two minutes.
4. After servicing the module, push the module into the cabinet, and tighten the screws on both sides.
5. Place the ready switch to ready state, at this time, the red indicator beside the ready switch is off while the green indicator
is on. Press the RESET FAULT key, and then the module will automatically connect to the system. After the bypass runs on
the power flow chart, the UPS works in Bypass mode, then disconnect the maintenance bypass switch.
Service procedures of single UPS in normal mode
1. Place the ready switch on the front panel of the bypass power module to unready state, at this time, the red indicator
beside the ready switch is on.
2. Wait for two minutes, confirm that the red indicator beside the ready switch is always on, and then remove the fixing
screws on both sides of the front panel of the bypass power module, and pull the module out of the cabinet, then maintain
the module after waiting for two minutes.
3. After servicing the module, push the module into the cabinet, and tighten the screws on both sides.
4. Place the ready switch to ready state, at this time, the red indicator beside the ready switch is off while the green indicator
is on and red indicator is off. Then the module will automatically connect to the system.
10.3 Key Components And Service Life Of UPS

When in use, some devices of UPS system will have shorter service life than UPS itself due to abrasion in work. For the safety
of UPS supply system, it is necessary to have regular inspection and replacement of these devices. This section introduces
the key components of UPS and the reference years of service life. For systems under different conditions (environment,
load rate, and etc.), assessment and advice by professionals on whether to replace the device are required with reference to
the information provided in this section.
10.3.1 Life Parameters And The Proposed Replacement Time Of Key Components
Key components in Table 10-1 are used in the UPS system. To prevent system failures due to some of the devices' failure by
wear, it is proposed to carry out regular inspection and replacement during its estimated life.
Table 10-1 Life parameters and the proposed replacement time of key components
Key components Estimated life Proposed replacement time Proposed inspection period
Fan Not less than 7 years Five years to six years One year
Bus capacitor Not less than 7 years Five years to six years One year
Air filter One year to three years One year to two years Two months
VRLA battery (5-year
Five years Three year to four years Six months
life)
VRLA battery (10-year
10 years Six years to eight years Six months
life)
10.3.2 Replacement Of Air Filter
The air filters need regular inspection and replacement. The inspection and replacement intervals are related to the
environmental conditions of the UPS. Under normal environmental conditions, the air filters should be cleaned or replaced
once every two months and need more frequent cleaning and replacement in dusty or other harsh environments. Frequent
inspection or replacement should also be made in new buildings.

110 Chapter 10 Service And Maintenance
The UPS provides air filters on the back of the front door of the cabinet, and the user can replace the air filter during the
UPS operation.
Each air filter is fixed by a fixing bar on both sides. Refer to Figure 10-1, the following is the air filter replacement procedures:
1. Open the front door of the UPS to reveal the air filter on the back of the front door.
2. Remove a fixing bar on one side and loosen the fixing screws of the fixing bar on the other side, with no need to remove
this fixing bar.
3. Remove the air filter to be replaced, and insert a clean one.
4. Re-install the removed fixing bar in the original place and tighten the fixing screws.
5. Tighten the fixing screws of the fixing bar on the other side.
Air filter
Figure 10-1 Replacing air filter
10.4 Maintenance Of UPS And Options

UPS and the options need common maintenance:
1. Keep good history record. Keeping good history record facilitates failure treatment.
2. Keep clean, so as to prevent UPS from the invasion of dust and moisture.
3. Maintain appropriate ambient temperature. The most appropriate temperature for battery is 20°C to 25°C. Too low
temperature will reduce the battery capacity and too high temperature will reduce the battery life.
4. Check the wiring. Check the tightening of all connected screws, and there should be routine tightening at least once a
year.
5. Check regularly if there is any abnormity in the superior or subordinate switch to ensure cutting off the import or export
when the current is too large. Maintenance staff should be familiar with the typical ambient conditions where UPS is working
in order to rapidly position which ambient conditions are unusual; the setting of UPS touch screen should be known as well.
For information of the UPS battery maintenance, refer to 6.14 Battery Maintenance.

Chapter 11 Specifications 111
Chapter 11 Specifications
This chapter lists the UPS specifications.
11.1 Conformance And Standards

The UPS has been designed to comply with the European and international standards listed in Table 11-1.
Table 11-1 European and international standards
Item Normative reference
General safety requirements for UPS EN62040-1/IEC62040-1/AS62040-1
EMC requirements for UPS EN62040-2/IEC62040-2/AS62040-2 (Class C3)
Method of specifying the performance and test requirements of
EN62040-3/IEC62040-3/AS62040-3 (VFI SS 111)
UPS
The product standards in this table incorporate relevant compliance clauses with generic IEC and EN standards for safety
(IEC/EN/AS60950), electromagnetic emission and immunity (IEC/EN/AS61000 series) and construction (IEC/EN/AS60146 series and
60529).
11.2 Environmental Characteristics

Table 11-2 Environmental characteristics
Rated power (kVA)
Item Unit
250
Noise within 1m (in the front) dB (A) 70
Altitude m 1500; derate power by 1% per 100m between 1500m and 3000m
Relative humidity %RH 0 ~ 95%, non condensing
Operating temperature °C 0 ~ 40°C
Storage and transportation
°C Storage: -25°C ~ +55°C; transportation: -40°C ~ +70°C
temperature for UPS
Over-voltage level Level 2
Pollution level Level 2
Grid system TN, TT, IT
11.3 Mechanical Characteristics

Table 11-3 Mechanical characteristics
Rated power (kVA)
Item Unit
250
Dimensions Packing excluded mm 1000 × 1000 × 2000
(D × W × H) Packing included mm 1135 × 1130 × 2260
Net weight kg 583
Gross weight kg 650
Color Black ZP7021
Protection degree, IEC (60529) IP20 (front door open or closed)

112 Chapter 11 Specifications
11.4 Electrical Characteristics (Input Rectifier)

Table 11-4 Rectifier AC input (mains)
Rated power (kVA)
Item Unit
250
Rated AC input voltage1 Vac 380/400/415, 3-phase 4-wire (+PE) TN/TT/IT power distribution system
Input voltage range2 Vac 228 ~ 478
Frequency 2 Hz 50/60 (range: 40 ~ 70)
kW/kVA, full load
Power factor 0.99 (0.99)
(half load)
Input current A, rated3 437A
Total current harmonic
% (full load) 3
distortion
1. Rectifiers operate at any of the rated supply voltages and frequencies without further adjustment.
2. At 305V input mains the UPS maintains the specified output voltage at rated load without discharging a battery.
3. IEC62040-3/EN50091-3: at rated load, input voltage is 400V, battery remains fully charged.
11.5 Electrical Characteristics (Intermediate DC Circuit)

Table 11-5 Battery
Rated power (kVA)
Item Unit
250
Max. charging current A 60.5
Rated battery bus voltage Vdc 384 ~ 528
Quantity of lead-acid cells
Block 32 ~ 44 (12Vdc)
(nominal)
V/cell 2.27 (selectable from 2.20V/cell to 2.30V/cell)
Float voltage
(VRLA) Constant current and constant voltage charge mode
Temperature compensation mV/°C/cl -3.0 (selectable from 0 to -5.0 around 25°C or 30°C, or inhibit)
Ripple current % C10 0.05
V/cell 2.35 (selectable from 2.30 to 2.40)
Boost voltage
(VRLA) Constant current and constant voltage charge mode
Float-boost current trigger 0.050C10 (selectable from 0.001 to 0.070)
Boost-float current trigger 0.020C10 (selectable from 0.001 to 0.025)
Boost control
8hr safety time timeout (selectable from 8hr to 30hr)
Boost mode inhibit also selectable
V/cell
EOD voltage 1.63 (selectable from 1.60 to 1.90)
(VRLA)

Chapter 11 Specifications 113
11.6 Electrical Characteristics (Inverter Output)

Table 11-6 Inverter output (to critical load)
Rated power (kVA)
Item Unit
250
Rated AC voltage1 Vac 380/400/415 (3-phase 4-wire, with neutral reference to the bypass neutral)
Frequency2 Hz 50/60
Power factor 1
Output power Rated 250kVA (module is full configuration)
Overload % <105%, long time; 125, 10min; <150, 1min
Non-linear load capability kVA 100
ổn định điện áp Steady state voltage stability % ±1
điện áp thoáng qua Transient voltage response % ±5
Total voltage harmonic
% < 1 (linear load), < 3 (non-linear load3)
distortion méo sóng điện áp
Synchronisation window Hz Rated frequency ±2Hz (Range: 50/60Hz ± 10%)
Slew rate (max. change rate of
Hz/s 0.6; setting range: 0.1 ~ 3
synchronisation frequency)
1. Factory set to 380V. 400V or 415V can be selected by service engineer at site.
2. Factory set to 50Hz. 60Hz can be selected by service engineer at site. Note that the system frequency can be changed only when the
UPS is on bypass. It is strictly prohibited to change the system frequency when the UPS is on inverter.
11.7 Electrical Characteristics (Bypass Input)

Table 11-7 Bypass input
Rated power (kVA)
Item Unit
250
380/400/415, 3-phase 4-wire, sharing neutral with the rectifier input and providing
Rated AC voltage1 Vac
neutral reference to the output
380V A 380
Rated current 400V A 360
415V A 348
Frequency2 Hz 50/60
Upper limit: +10, +15 or +20, default: +15
Bypass voltage tolerance %Vac Lower limit: -10, -20, -30 or -40, default: -20
(delay time to accept steady bypass voltage: 10s)
Bypass frequency tolerance % ±10 or ±20, default: ±10
1. Factory set to 380V. 400V or 415V can be selected by service engineer at site.
2. Factory set to 50Hz. 60Hz can be selected by service engineer at site.
11.8 Efficiency And Loss

Table 11-8 Efficiency and loss
Rated power (kVA)
Item Unit
250
Rated normal mode kW 12.5
ECO mode kW 2.5

114 Appendix 1 Glossary
Appendix 1 Glossary
AC Alternating current
BCB Battery circuit breaker
CSA Cross sectional area
DC Direct current
EIB External interface board
EMC Electromagnetic compatibility
EMI Electromagnetic interference
EOD End-of-discharge
EPO Emergency power off
I/O Input/output
IGBT Integrated gate bipolar transistor
LBS Load bus synchronizer đồng bộ hoá tải trên thanh cái
TOUCH SCREEN Liquid crystal display
LED Light-emitting diode
PC Personal computer
PE Protective earth
RCCB dư Residual current circuit breaker
RCD Residual current detector
REPO Remote emergency power off
SCR Silicon-controlled rectifier
SNMP Simple network monitoring protocol
STS Static transfer switch
SVPWM Space vector pulse width modulation
UPS Uninterruptible power system
VRLA Valve-regulated lead-acid

Appendix 2 Hazardous Substances And Content 115
Appendix 2 Hazardous Substances And Content
Hazardous substances
Parts Plumbum Hydrargyru Cadmium Chrome 6+ PBB PBDE
Pb Hg Cd Cr (VI) PBB PBDE
Hex copper stud × ○ ○ ○ ○ ○
PCBA × ○ ○ ○ ○ ○
AC capacitor × ○ ○ ○ ○ ○
DC capacitor × ○ ○ ○ ○ ○
Fan × ○ ○ ○ ○ ○
Cables × ○ ○ ○ ○ ○
TOUCH SCREEN × × ○ ○ ○ ○
Sensors × ○ ○ ○ ○ ○
Large-medium power
× ○ ○ ○ ○ ○
magnetic components
Circuit breaker/rotating
× ○ ○ ○ ○ ○
switch
Semiconductors × ○ ○ ○ ○ ○
Battery (when applicable) × ○ ○ ○ ○ ○
Insulation monitoring
× ○ ○ ○ ○ ×
device (when applicable)
This table is made following the regulation of SJ/T 11364.
○: Means the content of the hazardous substances in all the average quality materials of the parts is within the limits specified in GB/T 26572
×: Means the content of the hazardous sustances in at least one of the average quality materilals of the parts is outsides the limits specified in
GB/T 26572
About battery: Generally follow the environmental protection use period of the battery, otherwise five years.
Applicable scope: Liebert APM 250kVA UPS

1.3 - Liebert-APM250 User Manual

Uploaded by

Copyright:

Available Formats

1.3 - Liebert-APM250 User Manual

Uploaded by

Document Information

Original Title

Copyright

Available Formats

Share this document

Share or Embed Document

Sharing Options

Did you find this document useful?

Is this content inappropriate?

Copyright:

Available Formats

1.3 - Liebert-APM250 User Manual

Uploaded by

Copyright:

Available Formats

Liebert APM 250kVA Modular UPS

2017 Copyright, 2019 by Vertiv Tech Co., Ltd.

Vertiv Tech Co., Ltd.

Conformity and standards

Warning: high earth leakage current

User serviceable components (For service personnel)

Battery voltage exceeds 400Vdc (For service personnel)

General safety (For users)

Multiple power inputs (For users)

V1.1 (November 27, 2017)

V1.2 (July 10, 2018)

V1.3 (September 4, 2018)

V1.4 (December 25, 2018)

V1.5 (April 19, 2019)

V1.6 (August 16, 2019)

V1.7 (October 10, 2019)

Chapter 1 Overview .................................................................................................................................................................................1

1.1 Features .....................................................................................................................................................................................1

1.2.2 Bypass ....................................................................... 2

1.2.3 System Control Principle ............................................................ 2

1.2.4 UPS Power Supply Switch Configuration.................................................. 3

1.2.5 Battery Circuit Breaker (BCB)......................................................... 4

1.3 Parallel System...........................................................................................................................................................................4

1.3.2 Parallel System Requirements ........................................................ 4

1.4 Operation Modes........................................................................................................................................................................4

1.5.2 Advanced Function ............................................................... 8

1.5.3 Battery Temperature Compensation .................................................... 8

1.6 Battery Protection......................................................................................................................................................................8

Chapter 2 Mechanical Installation...........................................................................................................................................................9

2.1 Precautions ................................................................................................................................................................................9

2.6.2 Selection Of Battery Location ....................................................... 14

2.6.3 Storage ...................................................................... 14

2.7 Mechanical Requirement ..........................................................................................................................................................14

2.7.2 Moving Cabinet ................................................................ 15

2.7.3 Clearance .................................................................... 15

2.7.4 Cable Access Mode .............................................................. 15

2.7.5 Installing And Removing Power Modules ................................................ 16

Chapter 3 Electrical Installation ............................................................................................................................................................18

3.1 Wiring Of Power Cable .............................................................................................................................................................18

3.1.2 Maximum Steady State AC And DC Currents .............................................. 18

3.1.3 Recommended CSA Of Single Module Cable .............................................. 18

3.1.4 Selection Of UPS I/O Switch......................................................... 19

3.1.6 Notes ....................................................................... 19

3.1.7 Power Cable Connecting Terminal ..................................................... 19

3.1.8 Protection Ground ............................................................... 19

3.1.9 External Protective Device ......................................................... 19

3.1.10 Power Cable Connection Steps ...................................................... 21

3.2 Wiring Of Signal Cable .............................................................................................................................................................24

3.2.2 Dry Contact Port J21 ............................................................. 25

3.2.3 Dry Contact Port J22 ............................................................. 25

3.2.4 Dry Contact Port J26 ............................................................. 26

3.2.5 Dry Contact Ports J23 ~ J25 ........................................................ 27

3.2.6 REPO Port .................................................................... 28

3.2.7 RS232 Communication Port ......................................................... 28

3.2.8 Parallel And LBS Communication Ports ................................................. 28

3.2.9 Intellislot Port ................................................................. 28

3.2.10 Signal Cable Connection Steps ...................................................... 29

Chapter 4 Operator Control And Display Panel ....................................................................................................................................31

4.1 Introduction .............................................................................................................................................................................31