InfiniSolar 15K Manual
InfiniSolar 15K Manual
InfiniSolar 15K Manual
Version: 1.0
Table Of Contents
1. Introduction ...................................................................................................................... 1
2. Important Safety Warning .................................................................................................. 2
3. Unpacking & Overview ....................................................................................................... 4
3-1. Packing List............................................................................................................... 4
3-2. Product Overview ...................................................................................................... 5
4. Installation ........................................................................................................................ 6
4-1. Selecting Mounting Location ....................................................................................... 6
4-2. Mounting Unit ........................................................................................................... 6
5. Grid (Utility) Connection .................................................................................................... 8
5-1. Preparation ............................................................................................................... 8
5-2. Connecting to the AC Utility ....................................................................................... 8
6. PV Module (DC) Connection ............................................................................................. 10
7. Battery Connection .......................................................................................................... 14
8. Load (AC Output) Connection ........................................................................................... 15
8-1. Preparation ............................................................................................................. 15
8-2. Connecting to the AC output .................................................................................... 15
9. Communication ............................................................................................................... 17
10. Dry Contact Signal ........................................................................................................... 18
10-1. Electric Parameter ................................................................................................. 18
10-2. Function Description .............................................................................................. 18
11. Relay Control Port ........................................................................................................... 20
11-1. Interface Configuration .......................................................................................... 20
11-2. Function Description ............................................................................................ 20
12-2. Application .......................................................................................................... 21
12. Application with Energy Meter .......................................................................................... 22
13. Commissioning ................................................................................................................ 23
14. Initial Setup .................................................................................................................... 24
15. Operation ....................................................................................................................... 36
15-1. Interface ............................................................................................................... 36
15-2. LCD Information Define ......................................................................................... 36
15-3. Button Definition ................................................................................................... 38
15-4. Query Menu Operation ........................................................................................... 38
15-5. Operation Mode & Display ...................................................................................... 41
16. Charging Management ..................................................................................................... 45
17. Maintenance & Cleaning .................................................................................................. 47
18. Trouble Shooting ............................................................................................................. 48
18-1. Warning List .......................................................................................................... 48
18-2. Fault Reference Codes ........................................................................................... 49
19. Specifications .................................................................................................................. 51
Appendix I: Parallel Installation Guide ....................................................................................... 53
Introduction ................................................................................................................... 53
Parallel cable .................................................................................................................. 53
Overview ....................................................................................................................... 53
Mounting the Unit .......................................................................................................... 54
Wiring Connection .......................................................................................................... 54
Inverters Configuration ................................................................................................... 56
Setting and LCD Display.................................................................................................. 59
Commissioning ............................................................................................................... 62
Trouble shooting ............................................................................................................ 63
1. Introduction
This hybrid PV inverter can provide power to connected loads by utilizing PV power,
utility power and battery power.
Hybrid inverter
Distribution Box
Electric grids
PV module
Load
Battery
Note: By following the EEG standard, every inverter sold to German area is not allowed
to charge battery from Utility. The relevant function is automatically disabled by the
software.
1
2. Important Safety Warning
Before using the inverter, please read all instructions and cautionary
markings on the unit and this manual. Store the manual where it can be
accessed easily.
This manual is for qualified personnel. The tasks described in this manual may be
performed by qualified personnel only.
General Precaution-
Conventions used:
WARNING! Warnings identify conditions or practices that could result in personal
injury;
CAUTION! Caution identify conditions or practices that could result in damaged to the
unit or other equipment connected.
WARNING! Before installing and using this inverter, read all instructions and cautionary
markings on the inverter and all appropriate sections of this guide.
CAUTION! Authorized service personnel should reduce the risk of electrical shock by
disconnecting AC, DC and battery power from the inverter before attempting any
maintenance or cleaning or working on any circuits connected to the inverter. Turning off
controls will not reduce this risk. Internal capacitors can remain charged for 5 minutes
after disconnecting all sources of power.
CAUTION! To avoid a risk of fire and electric shock, make sure that existing wiring is in
good condition and that the wire is not undersized. Do not operate the Inverter with
damaged or substandard wiring.
2
CAUTION! Under high temperature environment, the cover of this inverter could be hot
enough to cause skin burns if accidentally touched. Ensure that this inverter is away
from normal traffic areas.
CAUTION! To reduce risk of fire hazard, do not cover or obstruct the cooling fan.
CAUTION! Do not operate the inverter if it has received a sharp blow, been dropped, or
otherwise damaged in any way. If the inverter is damaged, please call for an RMA
(Return Material Authorization).
CAUTION! AC breaker, DC switch and Battery circuit breaker are used as disconnect
devices and these disconnect devices shall be easily accessible.
3
3. Unpacking & Overview
3-1. Packing List
Before installation, please inspect the unit. Be sure that nothing inside the package is
damaged. You should have received the following items inside of package:
4
3-2. Product Overview
5
4. Installation
4-1. Selecting Mounting Location
Consider the following points before selecting where to install:
Do not mount the inverter on flammable construction materials.
Mount on a solid surface
This inverter can make noises during operation which may be perceived as a
nuisance in a living area.
Install this inverter at eye level in order to allow the LCD display to be read at all
times.
For proper air circulation to dissipate heat, allow a clearance of approx. 20 cm to
the side and approx. 50 cm above and below the unit.
Dusty conditions on the unit may impair the performance of this inverter.
The ambient temperature should be between 0°C and 40°C and relative humidity
should be between 5% and 85% to ensure optimal operation.
The recommended installation position is to be adhered to vertical.
For proper operation of this inverter, please use appropriate cables for grid
connection.
The pollution degree of the inverter is PD2. Select an appropriate mounting
location. Install the solar inverter in a protected area that is dry, free of excessive
dust and has adequate air flow. Do NOT operate it where the temperature and
humidity is beyond the specific limits. (Please check the specs for the limitations.)
Installation position shall not prevent access to the disconnection means.
This inverter is designed with IP20 for indoor applications only.
Regularly clean the fan filter.
Installation to the wall should be implemented with the proper screws. After that, the
device should be bolted on securely.
The inverter only can be used in a CLOSED ELECTRICAL OPERATING AREA. Only service
person can enter into this area.
6
1. Drill six holes in the marked 2. Raise the inverter and place it over
locations with supplied six screws. the mounting plate.
The reference tightening torque is
35 N.m.
7
5. Grid (Utility) Connection
5-1. Preparation
NOTE: The overvoltage category of the AC input is III. It should be connected to the
power distribution.
NOTE2: It’s strongly recommended to install the external surge protection device at the
grid input. The recommended parameters of the SPD is below:
Maximum Continuous Operating Voltage Uc (VAC) 275V~400V
Voltage protection Level Up (VAC) kV ≤1.0
Nominal Discharge Current In (8/20s) kA 20
Maximum Discharge Cuurent Imax (8/20s) kA 40
Response Time (ns) <25
WARNING! It's very important for system safety and efficient operation to use
appropriate cable for grid (utility) connection. To reduce risk of injury, please use the
proper recommended cable size as below.
Suggested cable requirement for AC wire
Nominal Grid Voltage 230VAC per phase
Conductor cross-section (mm ) 2 10-16
AWG no. 8-6
Component Description
A Pressure dome
B Clip
C Sealing nut
D Protective element
E Socket element
Step 1: Check the grid voltage and frequency with an AC voltmeter. It should be the
same to “VAC” value on the product label.
Step 2: Turn off the circuit breaker.
Step 3: Remove insulation sleeve 13 mm for five conductors.
8
Step 4: Thread the five cables through pressure dome
(A), clip (B), sealing nut (C) and protective element (D) in
sequence.
Step 5: Thread five cables through socket element (E) according to polarities indicated
on it and tighten the screws to fix wires after connection.
Step 7: Plug the AC connection socket into AC grid terminal of the inverter.
9
CAUTION: To prevent risk of electric shock, ensure the ground wire is properly earthed
before operating this hybrid inverter no matter the grid is connected or not.
WARNING: Because this inverter is non-isolated, only three types of PV modules are
acceptable: single crystalline and poly crystalline with class A-rated and CIGS modules.
To avoid any malfunction, do not connect any PV modules with possibility of leakage
current to the inverter. For example, grounded PV modules will cause leakage current to
the inverter. When using CIGS modules, please be sure NOT grounding.
CAUTION: It’s requested to have PV junction box with surge protection. Otherwise, it
will cause inverter damage when lightning occurs on PV modules.
Step 1: Check the input voltage of PV array modules. The acceptable input voltage of the
inverter is 350VDC - 900VDC. Please make sure that the maximum current load of
MPPT1 input connector is less than 37.2A; MPPT 2 input connector is 18.6A
CAUTION: Exceeding the maximum input voltage can destroy the unit!! Check the
system before wire connection.
Step 2: Disconnect the circuit breaker and switch off the DC switch.
Step 3: Assemble provided PV connectors with PV modules by the following below steps.
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Components for PV connectors and Tools:
Female terminal
Male terminal
Insert assembled cable into female connector housing as shown below charts.
Insert striped cable into male terminal and crimp male terminal as shown below charts.
Insert assembled cable into male connector housing as shown below charts.
11
Then, use spanner to screw pressure dome tightly to female connector and male
connector as shown below.
Step 4: Check correct polarity of connection cable from PV modules and PV input
connectors. Then, connect positive pole (+) of connection cable to positive pole (+) of
PV input connector. Connect negative pole (-) of connection cable to negative pole (-) of
PV input connector.
+ -
WARNING! It’s very important for system safety and efficient operation to use
appropriate cable for PV module connection. To reduce risk of injury, please use the
proper recommended cable size as below.
CAUTION: Never directly touch terminals of the inverter. It will cause lethal electric
shock. 12
CAUTION: Do NOT touch the inverter to avoid electric shock. When PV modules are
exposed to sunlight, it may generate DC voltage to the inverter.
13
7. Battery Connection
CAUTION: Before connecting to batteries, please install separately a DC circuit
breaker between inverter and batteries.
NOTE1: Please only use sealed lead acid battery, vented and Gel battery. Please check
maximum charging voltage and current when first using this inverter. If using Lithium
iron or Nicd battery, please consult with installer for the details.
NOTE2: Please use 60VDC/300A circuit breaker.
NOTE3: The overvoltage category of the battery input is II.
Please follow below steps to implement battery connection:
Step 1: Check the nominal voltage of batteries. The nominal input voltage for inverter is
48VDC.
+-
Step 4: Make sure the wires are securely connected. The reference tightening torque is
5.5~7.0 N.m.
WARNING! It’s very important for system safety and efficient operation to use
appropriate cable for battery connection. To reduce risk of injury, please use the proper
recommended cable size as below.
Nominal Battery Voltage 48V
Conductor cross-section (mm ) 2 182
AWG no. 2*1/0
Protective earthing (battery side) 150mm2 (300kcmil)
14
8. Load (AC Output) Connection
8-1. Preparation
CAUTION: To prevent further supply to the load via the inverter during any mode of
operation, an additional disconnection device should be placed on in the building wiring
installation.
WARNING! It’s very important for system safety and efficient operation to use
appropriate cable for AC connection. To reduce risk of injury, please use the proper
recommended cable size as below.
Nominal Grid Voltage 208/220/230/240 VAC per phase
Conductor cross-section (mm2) 5.5-10
AWG no. 10-8
8-2. Connecting to the AC output
Overview of Load Connection Socket
A
E
D B
C
Component Description
A Pressure dome
B Clip
C Sealing nut
D Protective element
E Socket element
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L1→ LINE 1 (Black)
L2→ LINE 2 (Grey)
L→ LINE 3 (Brown)
→ Ground (Yellow-Green)
N→ Neutral (Blue)
The reference tightening torque is 1.0-1.5 N.m.
Step 4: Push protective dome (D) on to socket element (E) until both are locked tightly.
Then, twist protective element (D) and pressure dome (A) so that all cables are firmly
connected.
CAUTION: It’s only allowed to connect load to “AC Output Connector”. Do NOT connect
the utility to “AC Output Connector”.
CAUTION: Be sure to connect L terminal of load to L terminal of “AC Output Connector”
and N terminal of load to N terminal of “AC Output Connector”. The G terminal of “AC
Output Connector” is connected to grounding of the load. Do NOT mis-connect.
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9. Communication
The inverter is equipped with several communication ports and it is also equipped with a
slot for alternative communication interfaces in order to communicate with a PC with
corresponding software. This intelligent slot is suitable to install with SNMP card and
Modbus card. Follow below procedure to connect communication wiring and install the
software.
For RS232 port, you should use a DB9 For USB port, you should use a USB cable
cable as follows: as follows:
For Dry contact port, please remove For SNMP or MODBUS card, you should
insulation sleeve 8 mm for three use RJ45 cables as follows:
conductors and insert three cables into
ports
Please install monitoring software in your computer. Detailed information is listed in the
next chapter. After software is installed, you may initial the monitoring software and
extract data through communication port.
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10. Dry Contact Signal
There is one dry contact available on the bottom panel. It could be used to
remote control for external generator.
Note: The application of the dry contact should not exceed the electric
parameter shown as above. Otherwise, the internal relay will be damaged.
Unit
Condition
Status Dry contact port:
NO&C NC&C
Power
Unit is off and no output is powered. Open Close
Off
Battery voltage is lower than setting
battery cut-off discharging voltage Close Open
when grid is available.
Battery voltage is lower than setting
battery cut-off discharging voltage Close Open
when grid is unavailable.
Power On
Battery voltage is higher than below 2
setting values:
1. Battery re-discharging voltage
Open Close
when grid is available.
2. Battery re-discharging voltage
when grid unavailable.
You can set the related parameters in software. Refer to below chart:
18
19
11. Relay Control Port
This port is available to provide a power source (230V/8A) to trigger external
relay. This function is only valid for Grid-tie with backup II mode.
Power On 230V
Condition 2:
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Condition 3:
230V
Power on
12-2. Application
Below chart is recommended circuit wiring.
3-phase inverter
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12. Application with Energy Meter
With Modbus card II and energy meter, hybrid inverter can be easily integrated into the
existing household system. For details please refer to Modbus card II manual.
Note: this application is only valid for Grid-Tie with Backup II mode.
Equipped with Modbus card II, hybrid inverter is connected to energy meter with RS485
communication port. It’s to arrange self-consumption via Modbus card to control power
generation and battery charging of the inverter.
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13. Commissioning
Step 1: Check the following requirements before commissioning:
Ensure the inverter is firmly secured
Check if the open circuit DC voltage of PV module meets requirement (Refer to
Section 6)
Check if the open circuit utility voltage of the utility is at approximately same to
the nominal expected value from local utility company.
Check if connection of AC cable to grid (utility) is correct if the utility is required.
Full connection to PV modules.
AC circuit breaker (only applied when the utility is required), batter circuit breaker,
and DC circuit breaker are installed correctly.
Step 2: Switch on the battery circuit breaker and then switch on PV DC breaker. After
that, if there is utility connection, please switch on the AC circuit breaker. At this
moment, the inverter is turned on already. However, there is no output generation for
loads. Then:
If LCD lights up to display the current inverter status, commissioning has been
successfully. After pressing “ON” button for 1 second when the utility is detected,
this inverter will start to supply power to the loads. If no utility exists, simply press
“ON” button for 3 seconds. Then, this inverter will start to supply power to the
loads.
If a warning/fault indicator appears in LCD, an error has occurred to this inverter.
Please inform your installer.
Step 3: Please insert CD into your computer and install monitoring software in your PC.
Follow below steps to install software.
1. Follow the on-screen instructions to install the software.
2. When your computer restarts, the monitoring software will appear as shortcut icon
located in the system tray, near the clock.
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14. Initial Setup
Before inverter operation, it’s required to set up “Operation Mode” via software. Please
strictly follow below steps to set up. For more details, please check software manual.
Step 1: After turning on the inverter and installing the software, please click “Open
Monitor” to enter main screen of this software.
Step 2: Log in into software first by entering default password “administrator”.
Step 3: Select Device Control>>MyPower Management. It is to set up inverter
operation mode and personalized interface. Refer to diagram below.
Mode
There are three operation modes: Grid-tie with backup, Grid-Tie and Off-Grid.
Grid-tie with backup: PV power can feed-in back to grid, provide power to the
load and charge battery. There are four options available in this mode: Grid-
tie with backup I, II, III and IV. In this mode, users can configure PV power
supply priority, charging source priority and load supply source priority.
However, when Grid-tie with backup IV option is selected in PV energy supply
priority, the inverter is only operated between two working logics based on
defined peak time and off-peak time of electricity. Only peak time and off-peak
time of electricity are able to set up for optimized electricity usage.
Grid-Tie: PV power only can feed-in back to grid.
Off-Grid: PV power only provides power to the load and charge battery. No
feed-in back to grid is allowed.
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SECTION A:
Standard: It will list local grid standard. It’s requested to have factory password to
make any modifications. Please check local dealer only when this standard change
is requested.
CAUTION: Wrong setting could cause the unit damage or not working.
SECTION B:
This section contents may be different based on different selected types of
operations.
Allow AC charging duration: It’s a period time to allow AC (grid) to charge battery.
When the duration is set up as 0:00-00:00, it means no time limitation for AC to
charge battery.
AC output ON/Off Timer: Set up on/off time for AC output of inverter. If setting it
as 00:00/00:00, this function is disabled.
Allow battery to feed-in to the Grid when PV is available: This option is only valid in
Grid-tie with backup II or Grid-tie with backup III modes.
Allow battery to feed-in to the Grid when PV is unavailable: This option is only valid
in all options of Grid-tie with backup mode.
PV energy supply priority setting: 1st Battery, 2nd Load and 3rd Grid.
PV power will charge battery first, then provide power to the load. If there is any
remaining power left, it will feed-in to the grid.
Battery charging source:
1. PV and Grid (Default)
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It’s allowed to charge battery from PV power first. If it’s not sufficient, grid will charge
battery.
2. PV only
It is only allow PV power to charge battery.
3. None
It is not allowed to charge battery no matter it’s from PV power or grid.
Load supply source:
When PV power is available: 1st PV, 2nd Grid, 3rd Battery
If battery is not fully charged, PV power will charge battery first. And remaining PV
power will provide power to the load. If it’s not sufficient, grid will provide power to
the load. If grid is not available at the same time, battery power will back up.
27
PV energy supply priority setting: 1st Load, 2nd Battery and 3rd Grid.
PV power will provide power to the load first. Then, it will charge battery. If there is
any remaining power left, it will feed-in to the grid.
Battery charging source:
1. PV and Grid
It’s allowed to charge battery from PV power first. If it’s not sufficient, grid will charge
battery.
2. PV only
It is only allow PV power to charge battery.
3. None
It is not allowed to charge battery no matter it’s PV power or grid.
Load supply source:
When PV power is available:
1. 1st PV, 2nd Battery, 3rd Grid
PV power will provide power to the load first. If it’s not sufficient, battery power will
provide power to the load. When battery power is running out or not available, grid
will back up the load.
2. 1st PV, 2nd Grid, 3rd Battery
PV power will provide power to the load first. If it’s not sufficient, grid will provide
power to the load. If grid is not available at the same time, battery power will back
up.
28
Grid-tie with backup (III):
PV energy supply priority setting: 1st Load, 2nd Grid and 3rd Battery
PV power will provide power to the load first. If there is more PV power available, it
will feed-in to the grid. If feed-in power reaches max. feed-in power setting, the
remaining power will charge battery.
NOTE: The max. feed-in grid power setting is available in parameter setting.
Please refer to software manual.
Grid-tie with backup (IV): Users are only allowed to set up peak time and off-
peak electricity demand.
Grid-Tie
Under this operation mode, PV power only feeds-in to the grid. No priority setting is
available.
31
Off-Grid
Off-Grid (I): Default setting for off-grid mode.
Off-Grid (II)
Off-Grid (III)
34
Load supply source:
When PV power is available: 1st PV, 2nd Battery, 3rd Grid
PV power will provide power to the load first. If it’s not sufficient, battery power will
back up the load. Only after battery power is running, Grid will back up the load.
When PV power is not available:
1. 1st Grid, 2nd Battery: Grid will provide power to the load at first. If grid is not
available, battery power will provide power backup.
2. 1st Battery, 2nd Grid: Battery power will provide power to the load at first. If
battery power is running out, grid will back up the load.
NOTE: This option will become ineffective during AC charging time and the priority
will automatically become 1st Grid and 2nd Battery order. Otherwise, it will cause
battery damage.
35
15. Operation
15-1. Interface
This display is operated by four buttons.
NOTICE: To accurately monitor and calculate the energy generation, please calibrate
the timer of this unit via software every one month. For the detailed calibration, please
check the user manual of bundled software.
15-2. LCD Information Define
Real-time operation
status
Section 12-5 describes
all operation conditions
when the inverter is set
up at “Grid-tie with
backup (I)” mode.
Display Function
Indicates AC input voltage or frequency.
Vac: voltage, Hz: frequency, L1N/L2N/L3N: Line phase
Indicates AC output power, voltage, frequency, or load
percentage.
KVA: apparent power, KW: active power,
Vac: Voltage, %: Load percentage, Hz: frequency,
L1N/L2N/L3N: AC output phase
Indicates PV input voltage or power.
Volt: voltage, KW: power, P1: PV input 1, P2: PV input 2
Indicates battery voltage or percentage.
Volt: voltage, %: percentage
36
Indicates charging current to battery or discharging current
from battery.
Indicates that the warning occurs.
Indicates that the fault occurs.
Indicates date and time, or the date and time users set for
querying energy generation.
Indicates solar panels.
Icon flashing indicates PV input voltage or is out of range.
Indicates utility.
Icon flashing indicates utility voltage or frequency is out of
range.
Indicates battery condition. And the lattice of the icon
indicates battery capacity.
Icon flashing indicates battery is not allowed to
discharge.
37
15-3. Button Definition
Button Operation Function
Enter query menu.
Short press. If it’s in query menu, press this button
to confirm selection or entry.
Press and hold the button This inverter is able to provide power
ENTER/ON
for approximately 1 second to connected loads via AC output
when the utility is detected connector.
or 3 seconds without the
utility.
Short press. Return to previous menu.
Press and hold the button
ESC/OFF
until the buzzer Turn off power to the loads.
continuously sounds.
Up Short press. Select last selection or increase value.
If it’s in query menu, press this button
to jump to next selection or decrease
Down Short press. value.
Mute alarm in standby mode or battery
mode.
NOTE: If backlight shuts off, you may activate it by pressing any button. When an error
occurs, the buzzer will continuously sound. You may press any button to mute it.
38
Setting Display Procedure
Input voltage or frequency of AC input
Procedure
39
Battery voltage or percentage.
Procedure
40
Today or total energy generated.
Procedure
41
PV power is generated, but not
sufficient enough to charge battery by
itself. PV power and the utility are
charging battery at the same time.
And the utility is also supplying power
to the connected load.
42
PV power is sufficient to provide
power to loads and feed power back
to the grid.
43
Bypass mode
The inverter is working without DC/INV operation and connecting to the loads.
LCD Display Description
Only utility is charging battery and
providing power to connected loads.
Standby mode :
The inverter is working without DC/INV operation and load connected.
LCD Display Description
This inverter is disabled on AC output
or even AC power output is enabled,
but an error occurs on AC output.
Only PV power is sufficient to charge
battery.
44
16. Charging Management
Default
Charging Parameter Note
Value
It can be adjusted via software from
Charging current 60A
10Amp to 200Amp.
Floating charging voltage (default) 54.0 Vdc It can be adjusted via software from
50Vac to 60Vdc.
Max. absorption charging voltage It can be adjusted via software from
56.0 Vdc
(default) 50Vac to 60Vdc.
Battery overcharge protection 62.0 Vdc
U
3 stages:
First – max. charging voltage Bulk Absorption Floating
increases to 56V; time
This inverter can connect to battery types of sealed lead acid battery, vented battery, gel
battery and lithium battery. The detail installation and maintenance explanations of the
external battery pack are provided in the manufacturer’s external battery pack of manual.
45
If using sealed lead acid battery, please set up the max. charging current according to
below formula:
The maximum charging current = Battery capacity (Ah) x 0.2
For example, if you are using 300 Ah battery, then, maximum charging current is 300 x
0.2=60 (A). Please use at least 50Ah battery because the settable minimum value of
charging current is 10A. If using AGM/Gel or other types of battery, please consult with
installer for the details.
46
17. Maintenance & Cleaning
Check the following points to ensure proper operation of whole solar system at regular
intervals.
Ensure all connectors of this inverter are cleaned all the time.
Before cleaning the solar panels, be sure to turn off PV DC breakers.
Clean the solar panels, during the cool time of the day, whenever it is visibly dirty.
Periodically inspect the system to make sure that all wires and supports are
securely fastened in place.
WARNING: There are no user-replaceable parts inside of the inverter. Do not attempt
to service the unit yourself.
Battery Maintenance
Servicing of batteries should be performed or supervised by personnel
knowledgeable about batteries and the required precautions.
When replacing batteries, replace with the same type and number of batteries or
battery packs.
The following precautions should be observed when working on batteries:
a) Remove watches, rings, or other metal objects.
b) Use tools with insulated handles.
c) Wear rubber gloves and boots.
d) Do not lay tools or metal parts on top of batteries.
e) Disconnect charging source prior to connecting or disconnecting battery
terminals.
f) Determine if battery is inadvertently grounded. If inadvertently grounded,
remove source from ground. Contact with any part of a grounded battery can result
in electrical shock. The likelihood of such shock can be reduced if such grounds are
removed during installation and maintenance (applicable to equipment and remote
battery supplies not having a grounded supply circuit).
CAUTION: A battery can present a risk of electrical shock and high short-circuit
current.
CAUTION: Do not dispose of batteries in a fire. The batteries may explode.
CAUTION: Do not open or mutilate batteries. Released electrolyte is harmful to
the skin and eyes. It may be toxic.
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18. Trouble Shooting
When there is no information displayed in the LCD, please check if PV
module/battery/grid connection is correctly connected.
NOTE: The warning and fault information can be recorded by remote monitoring
software.
will flash and will display warning code. If there are several codes, it will display
in sequences. Please contact your installer when you couldn’t handle with the warning
situations.
Code Warning Event Icon Description
(flashing)
01 Line voltage high loss Grid voltage is too high.
02 Line voltage low loss Grid voltage is too low.
03 Line frequency high loss Grid frequency is too high.
04 Line frequency low loss Grid frequency is too low.
05 Line voltage loss for long time Grid voltage is higher than
253V.
07 Island detect Island operation is detected.
08 Line waveform loss The waveform of grid is not
suitable for inverter.
09 Line phase loss The phase of grid is not in
right sequence.
10 EPO detected EPO is open.
11 Overload Load exceeds rating value.
12 Over temperature The temperature is too high
inside.
13 Batter voltage low Battery discharges to low
alarm point.
14 Battery under-voltage when Battery discharges to
grid is loss shutdown point.
15 Battery open Battery is unconnected or
too low.
16 Battery under-voltage when Battery stops discharging
grid is OK when the grid is OK.
48
18-2. Fault Reference Codes
When a fault occurs, the icon will flash as a reminder. See below for fault codes
for reference.
Situation
Fault Solution
Fault Event Possible cause
Code
01 Bus voltage over Surge 1. Restart the inverter.
2. If the error message still
remains, please contact your
installer.
02 BUS voltage under PV or battery 1. Restart the inverter
disconnect suddenly 2. If the error message still
remains, please contact your
installer.
03 BUS soft start time Internal Please contact your installer.
out components failed.
04 INV soft start time Internal Please contact your installer.
out components failed.
05 INV over current Surge 1. Restart the inverter.
2. If the error message still
remains, please contact your
installer.
06 Over temperature Internal 1. Check the ambient
temperature is too temperature and fans.
high. 2. If the error message still
remains, please contact your
installer.
07 Relay fault Internal Please contact your installer.
components failed.
08 CT sensor fault Internal Please contact your installer.
components failed.
09 Solar input power 1. Solar input driver 1. Please check if solar input
abnormal damaged. voltage is higher than 900V.
2. Solar input power 2. Please contact your installer.
is too much when
voltage is more
than 850V.
11 Solar over current Surge 1. Restart the inverter.
2. If the error message still
remains, please contact your
installer.
12 GFCI fault Leakage current 1. Check the wire and panels
excceds the limit. which may cause the leakage.
13 PV ISO fault The resistance 2. If the error message still
between PV and remains, please contact your
ground is too low. installer.
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14 INV DC current over Utility fluctuates. 1. Restart the inverter.
2. If the error message still
remains, please contact your
installer.
16 GFCI sensor fault GFCI sensor failed. Please contact your installer.
17 DSP&MCU Internal
communication loss components failed
or FW update failed
18 DSP&MCU protocol DSP&MCU FW
incompatibility incompatibility
22 Battery high voltage Battery voltage 1. Check the battery voltage.
fault exceeds the limit. 2. If the error message still
remains, please contact your
installer.
23 Over load The inverter is Reduced the connected load
loaded with more by switching off some
than 110% load and equipment.
time is up.
26 INV short Output short Check if wiring is connected
circuited. well and remove abnormal
load.
27 Fan lock Fan failed. Please contact your installer.
32 DCDC current over Surge 1. Restart the inverter.
2. If the error message still
remains, please contact your
installer.
33 INV voltage low Internal Please contact your installer.
components failed.
34 INV voltage high Internal Please contact your installer.
components failed.
38 MPPT input was Internal Please disconnect the solar
shorted circuit components failed. input immediately and contact
your installer.
51 Transformer current Surge 1. Restart the inverter.
over 2. If the error message still
remains, please contact your
installer.
52 Solar1 over Internal 1. Check the ambient
temperature temperature is too temperature and fans.
53 Solar2 over high. 2. If the error message still
temperature remains, please contact your
installer.
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19. Specifications
MODEL 15KW
RATED POWER 15000 W
PV INPUT (DC)
Maximum DC Power 22500 W
Nominal DC Voltage 720 VDC
Maximum DC Voltage 900 VDC
Working DC Voltage Range 350 VDC ~ 900 VDC
Start-up Voltage / Initial Feeding Voltage 320 VDC / 350 VDC
MPP Voltage Range / Full Load MPP
350 VDC ~ 850 VDC / 400 VDC ~ 800 VDC
Voltage Range
Maximum Input Current PV1: 37.2 A; PV2: 18.6 A
Max. inverter back feed current to the
0A
array
GRID OUTPUT (AC)
Nominal Output Voltage 230 VAC (P-N) / 400 VAC (P-P)
Output Voltage Range 184 - 265 VAC per phase
Output Frequency Range 47.5 ~ 51.5 Hz or 59.3~ 60.5Hz
Nominal Output Current 21.7 A per phase
Inrush Current/Duration 25.5 A per phase / 20ms
Maximum Output Fault Current/Duration 68 A per phase / 1ms
Maximum output Overcurrent Protection 68 A per phase
Power Factor Range 0.9 lead – 0.9 lag
AC INPUT
AC Start-up Voltage 120-140 VAC per phase
Auto Restart Voltage 180 VAC per phase
Acceptable Input Voltage Range 170 - 280 VAC per phase
Nominal Frequency 50 Hz / 60 Hz
AC Input Power 15000VA/15000W
Maximum AC Input Current 40 A
Inrush Input Current 40 A / 1ms
Generator INPUT
Maximum Input Power 16000W
Acceptable Input Voltage Range 170~280 VAC per phase
Acceptable Input Frequency Range 40.0 ~ 60.0 Hz
Maximum AC Input Current 40 A
BATTERY MODE OUTPUT (AC)
Nominal Output Voltage 230 VAC (P-N) / 400 VAC (P-P)
Output Frequency 50 Hz / 60 Hz (auto sensing)
Output Waveform Pure sine wave
Output Power 15000VA/15000W
Efficiency (DC to AC) 91%
Transfer time <15ms(On-grid mode to off-grid mode)
Transfer time in parallel mode ≤50ms(On-grid mode to off-grid mode)
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BATTERY & CHARGER (Lead-acid/Li-ion)
DC Voltage Range 40 – 62 VDC
Nominal DC Voltage 48 VDC
Maximum Battery Discharging Current 500 A
Maximum Charging Current 300 A
GENERAL
PHYSICAL
Dimension, D X W X H (mm) 820 x 650 x 224
Net Weight (kgs) 62
INTERACE
Communication Port RS-232/USB
Optional SNMP, Modbus and AS-400 cards
Intelligent Slot
available
ENVIRONMENT
Protective Class I
Ingress Protection Rating IP20
Humidity 0 ~ 90% RH (No condensing)
Operating Temperature -10 to 55°C (Power derating above 50°C)
Altitude Max. 2000m*
* Power derating 1% every 100m when altitude is over 1000m.
52
Appendix I: Parallel Installation Guide
Introduction
This inverter can be used in parallel with maximum 6 units. The supported maximum
output power is 90KW/90KVA.
Warning: Please make sure the output neutral of each inverter is always connected
when they are configured in parallel working, or it will damage the inverter.
Warning: Please makes sure the solar input of each inverter is independent, or it will
damage the inverter.
Parallel cable
You will find the following items in the package:
Overview
53
Mounting the Unit
When installing multiple units, please follow below chart.
NOTE: For proper air circulation to dissipate heat, it’s necessary to allow a clearance of
approx. 20 cm to the side and approx. 50 cm above and below the unit. Be sure to
install each unit in the same level.
Ring terminal:
Wiring Connection
The cable size of each inverter is shown as below:
Recommended battery cable and terminal size for each
inverter:
Ring Terminal
Model Wire Size Dimensions Torque value
Cable mm2
D (mm) L (mm)
15KW 2*3/0 170 8.4 54.2 7~12 Nm
WARNING: Be sure the length of all battery cables is the same. Otherwise, there will
be voltage difference between inverter and battery to cause parallel inverters not
working.
54
Regarding cable size of AC input and output, please also follow the same principle.
CAUTION!! Please install a breaker at the battery side. This will ensure the inverter can
be securely disconnected during maintenance and fully protected from overcurrent of
battery.
PV Connection
Please refer to user manual of single unit for PV Connection.
CAUTION: Each inverter should connect to PV modules separately.
55
Inverters Configuration
Two inverters in parallel:
Power Connection
Communication Connection
1 2
Communication Connection
1 2 3
56
Four inverters in parallel:
Power Connection
Communication Connection
1 2 3 4
Communication Connection
1 2 3 4 5
57
Six inverters in parallel:
Power Connection
Communication Connection
1 2 3 4 5 6
58
Setting and LCD Display
Setting Program:
The parallel function setting is only available by SolarPower. Please install SolarPower in
your PC first.
For setting, you can set the inverter one by one through RS232 or USB port.
But we suggest to use SNMP or Modbus card to combine the system as a centralized
monitoring system. Then, you can use “SYNC” function to set all the inverters at the
same time. If using SNMP or Modbus card to set up program, the bundled software is
SolarPower Pro.
59
Launch SolarPowerPro in computer and select Device Control >> Parameter Setting >>
Parallel output. Two options: Enable or Disable.
If you want to use parallel function, please choose “Enable” and press “ ”
button. Then, “ ” button will be shown is the screen. Please be sure to click
60
Parallel for output: Disable
80 CAN fault
81 Host loss
82 Synchronization loss
61
Commissioning
Step 1: Check the following requirements before commissioning:
Correct wire connection.
Ensure all breakers in Line wires of load side are open and each Neutral wire of
each unit is connected together.
Step 2: Turn on each unit and set “enable parallel for output” on SolarPower or
SolarPower Pro. And then, shut down all units.
Step 3: Turn on each unit.
LCD display in Master unit LCD display in Slave unit
NOTE: Master and slave units are randomly defined. Warning 02 is AC GRID voltage
low.
Step 4: Switch on all AC breakers of Line wires in AC input. It’s better to have all
inverters connect to utility at the same time. If not, it will display fault 82 in following-
order inverters. However, these inverters will automatically restart. If detecting AC
connection, they will work normally.
Step 5: If there is no more fault alarm, the parallel system is completely installed.
Step 6: Please switch on all breakers of Line wires in load side. This system will start to
provide power to the load.
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Trouble shooting
Situation
Fault Solution
Fault Event Description
Code
1. Restart the inverter.
2. Check if L1/L2/L3/N cables are not
connected with wrong sequence in all
Current feedback into the inverters.
60
inverter is detected. 3. Make sure the sharing cables are
connected in all inverters.
4. If the problem remains, please contact
your installer.
1. Update all inverter firmware to the
The firmware version of each same version.
71
inverter is not the same. 2. After updating, if the problem still
remains, please contact your installer.
1. Check if sharing cables are connected
The output current of each well and restart the inverter.
72
inverter is different. 2. If the problem remains, please contact
your installer.
80 CAN data loss 1. Check if communication cables are
81 Host data loss connected well and restart the inverter.
2. If the problem remains, please contact
82 Synchronization data loss
your installer.
63