I.L. 70C1036H05 I.L.

70C1036H05
Page 1

Instructions for Digitrip Models 1150, 1150i and 1150+,

1150+i Trip Units for use only in Cutler-Hammer Magnum
and Magnum DS Circuit Breakers
Table of Contents

1.0 General Description of Digitrip Trip Units ................. 7 4.2.6 Digital Relay Accessory Module ................. 28
1.1 Protection ............................................................... 7 4.2.7 TripLink ....................................................... 30
1.2 Mode of Trip and Status Information ........................ 7 4.2.8 Setting TIME ............................................... 31
1.3 Installation and Removal .......................................... 7 4.2.9 Selecting DISPLAYS .................................. 31
1.3.1 Installation of the Trip Unit ............................ 7 4.2.10 SYSTEM Settings ...................................... 31
1.3.2 Rating Plug Installation ................................. 8 4.3 View Settings (VIEW SET) .................................... 31
1.3.3 Trip Unit/Rating Plug Removal ....................... 9 4.3.1 Firmware Menu ........................................... 31
1.4 Wiring ..................................................................... 9 4.4 METER Menu ....................................................... 31
1.5 Plexiglass Cover ..................................................... 9 4.5 HARMONIC Menu ................................................. 32
1.6 DT 1150 Power/Relay Module .................................. 9 4.6 EventLOG ............................................................. 32
1.6.1 Auxiliary Power ............................................. 9 4.7 Power and Energy Parameters .............................. 32
1.6.2 Alarm Contacts ............................................. 9 4.8 Power Quality ....................................................... 33
1.7 Standards .............................................................. 10 4.8.1 Power Factor, THD and Crest Factor .......... 33
2.0 Description of Magnum Circuit Breakers ............... 10 4.8.2 Alarms ........................................................ 33
2.1 General ................................................................. 10 4.9 WAVEFORM CAPTURE Feature .......................... 33
2.2 Low-Energy Trip Actuator ...................................... 11 4.9.1 Six Cycle Waveform Capture on Trip ........... 33
2.3 Ground Fault Protection ........................................ 11 4.9.2 One Cycle Waveform Capture ..................... 33
2.3.1 General ....................................................... 11 4.10 HEALTH ................................................................ 33
2.3.2 Residual Sensing (3 Wire or 4 Wire) ........... 12 5.0 Test Procedures .................................................... 34
2.3.3 Source Ground Sensing .............................. 12 5.1 General ................................................................. 34
2.3.4 Zero Sequence Sensing .............................. 12 5.2 When to Test ........................................................ 34
2.3.5 Multiple Source/Multiple Ground ................. 12 5.2.1 Self Testing ................................................. 34
2.3.6 Ground Fault Settings ................................. 12 5.2.2 Functional Field Testing .............................. 35
2.4 Current Sensors for Standard Breaker .................. 13 5.3 Performance Testing for Ground Fault Trip Units .... 35
2.5 Current Sensors for Double Wide Breaker ............ 13 5.3.1 Code Requirements .................................... 35
3.0 Principles of Operation .......................................... 13 5.3.2 Standard Requirements .............................. 36
3.1 General ................................................................. 13 5.3.3 General Test Instructions ............................ 36
3.2 Trip and Operation Indicators ................................. 13 6.0 Battery .................................................................. 37
3.2.1 Status/Long Pickup LED ............................. 13 6.1 General ................................................................. 37
3.2.2 Alarm LED .................................................. 14 6.2 Battery Test .......................................................... 37
3.2.3 Trip LED ..................................................... 14 6.3 Battery Installation and Removal ........................... 37
3.3 Making Current Release ........................................ 14 7.0 Frame Ratings
3.4 Zone Interlocking ................................................... 14 (Sensor Ratings and Rating Plugs) ........................ 38
3.5 PT Module ............................................................ 14 8.0 Record Keeping .................................................... 38
4.0 Programming/Viewing Digitrip 1150 ....................... 19 9.0 References ............................................................ 39
4.1 Main Menu ............................................................ 19 9.1 Magnum and Magnum DS Circuit Breakers ........... 39
4.1.1 Power Up Sequence ................................... 19 9.2 Time-Current Curves .............................................. 39
4.1.2 Pushbutton Definition .................................. 19 Appendix A Zone Interlocking Examples ....................... 43
4.1.3 Blink Mode ................................................. 22 Appendix B Troubleshooting Guide ............................... 45
4.1.4 Programming/Viewing Screens ................... 22 Appendix C Typical Breaker Master
4.1.5 Reset Pushbutton Operation (After Trip) ..... 22 Connection Diagram .............................................. 47
4.2 Program Settings PGM SET ................................. 22 Appendix D Display Menu Diagrams ............................. 48
4.2.1 CURRENT Curve Type Selection and Appendix E Display Abbreviations ................................. 76
Pickup/Time Settings ................................. 22 Appendix F Digitrip Settings and Descriptions .............. 78
4.2.2 VOLTAGE - Frequency, Reverse Power .... 26 Appendix G Auxiliary Relays ........................................ 81
4.2.3 INCOM Communications .......................... 28 Appendix H Digital Relay Accessory Module ................ 82
4.2.4 Aux RELAYS .............................................. 28 Appendix I Modbus Translator Wiring ........................ 83
4.2.5 ALARMS .................................................... 28

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Figure 1.1 Digitrip 1150 Catalog # 11PLSIG Trip Unit with Rating Plug

WARNING WARNING

DO NOT ATTEMPT TO INSTALL OR PERFORM OBSERVE ALL RECOMMENDATIONS, NOTES, CAU-

MAINTENANCE ON EQUIPMENT WHILE IT IS TIONS, AND WARNINGS RELATING TO THE SAFETY
ENERGIZED. DEATH OR SEVERE PERSONAL INJURY OF PERSONNEL AND EQUIPMENT. OBSERVE AND
CAN RESULT FROM CONTACT WITH ENERGIZED COMPLY WITH ALL GENERAL AND LOCAL HEALTH
EQUIPMENT. ALWAYS VERIFY THAT NO VOLTAGE IS AND SAFETY LAWS, CODES, AND PROCEDURES.
PRESENT BEFORE PROCEEDING. ALWAYS FOLLOW
SAFETY PROCEDURES. CUTLER-HAMMER IS NOT NOTE: The recommendations and information contained
LIABLE FOR THE MISAPPLICATION OR herein are based on experience and judgement, but should
MISINSTALLATION OF ITS PRODUCTS. not be considered to be all inclusive or to cover every
application or circumstance which may arise.

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Table 1.1a CURRENT Protection Functions for Digitrip 1150/1150i Trip

Trip Unit Type Digitrip 1150 Digitrip 1150i

Ampere Range 100A-6000A 200A-6300A
RMS Sensing Yes Yes
Protection and Coordination
Protection Ordering Options Catalog # 11LSI, 11LSIG, 11LSIA or 11IEC, 11IEC-EF or
11PLSI, 11PLSIG, 11PLSIA 11PIEC, 11PIECEF
Fixed Rating Plug (In) Yes Yes
OverTEMPerature TRIP Yes Yes
Curve Type LSI/LSIG, LSIA LSI/LSIG
SLOPE I2T, I4T I2T, I4T
IEEE5 IEC5
Long LONG delay Pick Up 0.4-1.0 x (In) 0.4-1.0 x (In)
Delay LONG delay TIME @ 6 x (Ir) I2T 2-24 seconds 2-24 seconds
Protection LONG delay TIME @ 6 x (Ir) I4T 1-5 seconds 1-5 seconds
LONG delay thermal MEMORY Yes Yes
SHORT delay Pick Up3 150-1000% or 1200% or 1400% x 150-1000% or 1200% or 1400% x (Ir)
Short (Ir) 0.10-0.50 s
Delay SHORT delay TIME @ 8 x (Ir) I2T4 0.10-0.50 s 0.10-0.50 s
Protection SHORT delay TIME FLAT 0.10-0.50 s Yes
SHORT delay TIME ZONE INTERLOCK Yes
Instan- INSTantaneous Pick Up 200-1000% x or 1200% or 1400% 200-1000% or 1200% or 1400% x (In)
taneous (In) Yes
Protection Off setting Yes Yes
Making Current Release Yes
Neutral 4th Pole or External Neutral Trip Yes-CAT # LSI only Yes-CAT # IEC only
Protection (50%,100%) (50%,100%)
Ground GROUND fault option Yes Yes
(Earth) GROUND fault Pick Up 24-100% x (In)1 10-100% x (In)
Fault Off Position No Yes
Protection GROUND fault delay @ .625 x (In) I2T 0.10-0.50 s 0.10-0.50 s
GROUND fault delay FLAT 0.10-0.50 s 0.10-0.50 s
GROUND fault ZONE INTERLOCK Yes Yes
GROUND fault memory Yes Yes
Phase Protection
AMP UNBALANCE Yes Yes
PHASE LOSS (current-based) Yes Yes
System Diagnostics / Protection Related Alarms
Status/Long Pick Up LED Yes Yes
Cause of Trip LED’s Yes2 Yes2
HighLOAD ALARM Yes Yes
Long Delay Pick Up ALARM Yes Yes
GROUND ALARM Yes-CAT # LSIG Yes- CAT# IECEF
GROUND ALARM only Yes –CAT# LSIA –
NEUTral AMPere ALARM Yes Yes
OPeration COUNT ALARM Yes Yes
Auxiliary Relay Contacts (Programmable)
Block Close (1 contact) Yes Yes
ALARM/TRIP (2 contacts) Yes Yes

Notes: 1. ANSI/UL versions are limited to 1200 Amperes to comply with UL and NEC standards.
2. Four cause of trip LEDs indicate LONG, SHORT, INST or GROUND trip. Making Current Release and the
separate High Instantaneous Module are indicated by the Instantaneous LED.
3. An additional setting is marked M1 where:
Standard Circuit Breaker M1 = 14 x In for Plug Amps 100 through 1250A
M1 = 12 x In for Plug Amps 1600, 2000, 2500A
M1 = 10 x In for Plug Amps 3000, 3200A
Double Wide Circuit Breaker M1 = 14 x In for Plug Amps 2000, 2500A
M1 = 12 x In for Plug Amps 3000, 3200, 4000, 5000A (see Section 2.5)
M1 = 10 x In for Plug Amps 6000A, 6300A
4. Only available when Long Time I2T is selected.
5. Phase protection with 3 TRIP response types (See Section 4.2.1).

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Table 1.1b Metering Data for Digitrip 1150/1150i Trip Units

Current Metering Units Tolerance Notes

IA, IB, IC, IN, Amperes ±1% FS Real time data, FS = In rating
IG Amperes ±2% FS Real time data, FS = In rating
IA, IB, IC (AVG) Amperes 5 MINUTE AVERAGE
IN, IG (AVG) Amperes 5 MINUTE AVERAGE
(Tolerance applicable for 5 to 100% of In
IA, IB, IC (Max) Amperes and current will start metering @ .02 per unit)
IN, IG (Max) Amperes
IA, IB, IC (Min) Amperes Group values held until Reset.
IN, IG (Min) Amperes Based on approximately 1 second
time interval

Voltage Metering
VAB, VBC, VCA Volts ±1% FS FS (Full Scale) = 690 V
Power Metering
Power kW ±2% FS Approximately 1 second update
kVA kVA ±2% FS
kvar kvar ±2% FS
DEMAND kW kW ±2% FS LAST AVG - 5 MIN INTERVAL
DEMAND Max kW kW ±2% FS SLIDING or FIXED 15 MIN INTERVAL*
DEMAND kVA kVA ±2% FS LAST AVG - 5 MIN INTERVAL
DEMAND Max kVA kVA ±2% FS SLIDING or FIXED 15 MIN INTERVAL*
Energy Metering
ENERGY kWh kWh ±2% FS
ENERGY Rev kWh kWh ±2% FS
KVAh kVAh ±2% FS
Metering Related Alarms
kVA DEMAND ALARM KVA 1 to 12500 LAST AVG - 5 min fixed interval
kW DEMAND ALARM kW 1 to 12500 LAST AVG - 5 min fixed interval
Other
kVAh PULSE INITIATE kVAh See section INITIATE is an abbreviation for INITIATOR
kWh PULSE INITIATE kWh 4.7 INITIATE is an abbreviation for INITIATOR
* Only one of DEMAND Max kW or DEMAND Max kVA can be SLIDING INTERVAL

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Table 1.1c Power Quality Data for Digitrip 1150/1150i Trip Units

Harmonic Units Notes

THD (Total Harmonic Distortion)
THDA 0 to 99 percent Phase A current
THDB 0 to 99 percent Phase B current
THDC 0 to 99 percent Phase C current
THDN 0 to 99 percent Neutral current
Per Harmonic Data Fundamental through 27th
HARMON A 0 to 99 percent Phase A current
HARMON B 0 to 99 percent Phase B current
HARMON C 0 to 99 percent Phase C current
HARMON N 0 to 99 percent Phase N current
CF (Crest Factor)
CFA 1.0 to 25.5 Phase A current
CFB 1.0 to 25.5 Phase B current
CFC 1.0 to 25.5 Phase C current
CFN 1.0 to 25.5 Phase N current
Power Factor / Frequency
PF (Power Factor) 0 to 1.00 Located in METER menu, real time data
PF MIN 0 to 1.00 Value held until Reset
PF MAX 0 to 1.00 Value held until Reset
Hz (Frequency) Hz Located in METER menu
Power Quality Related Alarms (Programmable)
LOW PF ALARM 50 to 95 percent OFF setting available
THD ALARM 10 to 30 percent OFF setting available

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Table 1.1d VOLTAGE PROTECTION functions for Digitrip 1150/1150i Trip Units

Trip Unit Type Digitrip 1150+ Digitrip 1150i+

Ordering Catalog Number 11PLSI, 11PLSIG, 11PLSIA 11PIEC, 11PIECEF
SYSTEM Frequency 50 or 60 Hz 50 or 60 Hz

TRIPS
RANGE STEP SIZE TOLERANCE
UnderVoltage Trip 90 to 670 Volts 1 volt +/- 7 volts
UnderVoltage Time 1 to 250 seconds 1 second +2.5s, -0.5s or +2%, -2%
whichever is larger
OverVoltage Trip 180 to 720 Volts 1 volt +/- 7 volts
OverVoltage Time 1 to 250 seconds 1 second +2.5s, -0.5s or +2%, -2%
whichever is larger
UnderFrequency Trip 48 to 52 Hz (50 Hz) 0.1 Hz +/- .05 Hz
58 to 62 Hz (60Hz)
UnderFrequency Time 0.20 to 5.0 seconds 0.02 seconds +0.1s/-0s
OverFrequency Trip 48 to 52 Hz (50 Hz) 0.1 Hz +/- .05 Hz
58 to 62 Hz (60Hz)
OverFrequency Time 0.20 to 5.0 seconds 0.02 seconds +0.1s/-0s
Voltage Unbalance Trip 5% to 50% 1% +/-3
Voltage Unbalance Time 1 to 250 seconds 1 second +2.5s, -0.5s or +2%, -2%
whichever is larger
Reverse Power Trip 1 to 65000kW 1 kW +/- 2% FS
Reverse Power Time 1 to 250 seconds 1 second 0, +2%
+3s whichever is larger

ALARMS
RANGE STEP SIZE TOLERANCE
UnderVoltage Alarm 90 to 670 Volts 1 volt +/- 7 volts
UnderVoltage AlarmTime 1 to 250 seconds 1 second +2.5s, -0.5s or +2%, -2%
whichever is larger
OverVoltage Alarm 180 to 720 Volts 1 volt +/- 7 volts
OverVoltage AlarmTime 1 to 250 seconds 1 second +2.5s, -0.5s or +2%, -2%
whichever is larger
UnderFrequency Alarm 48 to 52 Hz (50 Hz) 0.1 Hz +/- .05 Hz
58 to 62 Hz (60Hz)
UnderFrequency AlarmTime 0.20 to 5.0 seconds 0.02 seconds +0.1s/-0s
OverFrequency Alarm 48 to 52 Hz (50 Hz) 0.1 Hz +/- .05 Hz
58 to 62 Hz (60Hz)
OverFrequency AlarmTime 0.20 to 5.0 seconds 0.02 seconds +0.1s/-0s
Voltage Unbalance Alarm 5% to 50% 1% +/-3
Voltage Unbalance AlarmTime 1 to 250 seconds 1 second +2.5s, -0.5s or +2%, -2%
whichever is larger
Phase Rotation Alarm ABC, CBA, OFF - -

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If you have any questions or need further information or The Digitrip 1150 family of trip units provides five phase and
instructions, please contact your local representative or two ground (time-current) curve-shaping adjustments. To
the Cutler Hammer Customer Support Center. satisfy the protection needs of any specific installation, the
exact selection of the available protection function is
1.0 GENERAL DESCRIPTION OF DIGITRIP TRIP UNITS adjustable. The short delay and ground fault adjustments
include either a FLAT or I2T response. A pictorial represen-
The Digitrip Trip Units are circuit breaker subsystems that tation of the applicable time-current curves for the selected
provide the protective functions of a circuit breaker. The trip protection functions is provided, for user reference, on the
unit is in a removable sealed housing, installed in the face of the trip unit as shown in Figure 1.1.
circuit breaker, and can be replaced in the field by the end
user. NOTE: The Digitrip 1150 (11LSI ,11PLSI style) and Digitrip
1150i (11IEC, 11PIEC) are the styles that can be used on
This instruction book specifically covers the application of 3-pole or 4-pole circuit breakers for the protection of the
Digitrip Trip Units, as illustrated in Figure 1.1, installed in neutral circuit. For a 3-pole circuit breaker an external
Magnum and Magnum DS Breakers. Throughout this sensor of the same rating as the phase sensor needs
Instructional Leaflet, the use of the term “Magnum Break- wired to the circuit breaker. Only these styles can provide
ers” refers to both the Magnum and Magnum DS low- neutral protection, although all styles can provide neutral
voltage, AC power circuit breakers. metering and alarming (one exception is that there is no
metering for source or zero sequence Ground Fault
The Magnum Digitrip line of trip units consists of the 1150 application). These styles also have a protection setting
which conforms to UL standards, and model 1150i con- called Neutral Ratio. The 100% setting is the default and
forming to IEC standards. Throughout this Instructional is used when phase and neutral conductors are of the
Leaflet, the use of the term Digitrip 1150 trip units refers to same ampacity. The 50% setting is for a half sized neutral
both models unless otherwise stated. conductor and essentually shifts the Long Time thermal
curve to the left making it more sensitive. Refer to the
National Electric Code (NEC) for the appropriate applica-
The Digitrip 1150 trip units may be applied to either 50 or
tion for 4-pole circuit breakers.
60 Hz systems.
1.2 Mode of Trip and Status Information
Digitrip DT1150 family of trip units incorporate two micro-
processors in their design. One processor is devoted On all DT1150 units, a green light emitting diode (LED),
totally to the task of current protection functions. This labeled Status, blinks approximately once each second to
processor provides true RMS current sensing for the proper indicate that the trip unit is operating normally. This Status
coordination with the thermal characteristics of conductors LED will blink at a faster rate if the Digitrip is in a pick-up,
and equipment. The Digitrip analyzes the secondary or overload, mode.
current signals from the circuit breaker current sensors
and, when preset current levels and time delay settings are
Red LEDs on the face of the 1150 family of trip units flash
exceeded, sends an initiating trip signal to the Trip Actua-
to indicate the cause, or trip mode, for an automatic trip
tor of the circuit breaker. The current sensors provide
operation (for example, ground fault, overload, or short
operating power to the trip unit. As current begins to flow
circuit trip). A battery in the Digitrip unit maintains the trip
through the circuit breaker, the sensors generate a sec-
indication until the Reset button is pushed. The battery is
ondary current which powers the trip unit.
satisfactory if its LED lights green when the Battery Test
button is pushed (See Section 6).
The second microprocessor provides the voltage protection
display, communications, metering, harmonic calcula-
NOTE: The Digitrip 1150 family provides all protection
tions, alarming and auxiliary relay functions. These
functions regardless of the status of the battery. The
additional features require that auxiliary power be provided
battery is only needed to maintain the automatic trip
to the circuit breaker.
indication on the mimic curve of the Digitrip when auxiliary
power is not available.
1.1 Protection
Each Digitrip DT1150 Trip Unit is completely self-contained 1.3 Installation and Removal
and requires no external control power to operate its basic
over current protection functions. It operates from current 1.3.1 Installation of the Trip Unit
signal levels derived through current sensors mounted in
the circuit breaker. The types of protection available for Align the Digitrip unit with the molded guide ears on the
each model are shown in Table 1.1. platform and spring clips of the Magnum Circuit Breaker.

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Figure 1.2 Installation of the Digitrip Unit into a Magnum Circuit Breaker (Side View)

Before plugging into the black edge connector, align the OPEN CIRCUIT CONDITION. THERE IS NO PROTEC-
long pins on the bottom of the Digitrip into the white, I1, TION FOR THE LOAD CIRCUIT.
connector (See Figure 1.2). Press the unit into circuit
breaker until the PC board edge engages into the connector
and the spring clips engage over the Digitrip’s housing. CAUTION
NOTE: Recheck visually the connector I1 to insure all plugs
are engaged properly.
IF A RATING PLUG IS NOT INSTALLED IN THE TRIP
UNIT, THE UNIT WILL INITIATE A TRIP WHEN IT IS
1.3.2 Rating Plug Installation
ENERGIZED. IN ADDITION THE INSTANTANEOUS LED
WILL LIGHT ON A PLUG TRIP.
WARNING
Insert the rating plug into the cavity on the right-hand side
of the trip unit. Align the three pins on the plug with the
DO NOT ENERGIZE THE MAGNUM CIRCUIT BREAKER sockets in the cavity. The plug should fit with a slight
WITH THE DIGITRIP REMOVED OR DISCONNECTED insertion force.
FROM ITS CONNECTOR. DAMAGE TO INTERNAL
CURRENT TRANSFORMERS MAY OCCUR DUE TO AN

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To remove the trip unit from the circuit breaker, deflect the
top and bottom spring clips to release the unit from the
black mounting platform. Pull the unit to disengage the trip
unit’s printed circuit board connectors J0 & I1 from the
circuit breaker (See Figure 1.2 and Appendix C).

1.4 Wiring

The internal components of the circuit breaker and their

connection points to the secondary contacts, are shown in
the breaker master connection diagram provided on page
47 as Appendix C.

1.5 Plexiglass Cover

A clear, tamper-proof plexiglass door sits on the circuit
breaker cover. This door, if sealed, allows the settings to
be viewed but not changed, except by authorized person-
nel. The plexiglass cover meets applicable tamper-proof
requirements. The cover is held in place by two cover
screws. Security is insured by the insertion of a standard
meter seal through the holes in both of the cover retention
screws. The plexiglass cover has an access cutout for the
View Functions group of pushbuttons and the Battery Test
pushbutton.

1.6 DT 1150 Power/Relay Module

The Power/Relay Module (See Figure 1.4) is a standard

device for the Digitrip 1150 model. The module is installed
Figure 1.3 Installation of the Rating Plug and Mounting on the molded platform under the trip unit in the Magnum
Screw Circuit Breaker. There are four style modules that cover
the following input voltage ratings: 120 VAC, 230 VAC, 24-
48 VDC and 125 VDC (100-140 VDC operating range). The
CAUTION burden of the Power/Relay Module is 10VA. Check circuit
breaker cover label marking for proper trip unit power and
voltage rating.
DO NOT FORCE THE RATING PLUG INTO THE CAVITY.
1.6.1 Auxiliary Power
Use a 1/8" (3 mm) wide screwdriver to tighten the M4
screw and secure the plug and the trip unit to the circuit When the module is wired and supplied with proper
breaker (See Figure 1.3). Close the rating plug door. voltage, it will provide an auxiliary power supply so that the
DT 1150’s (LED) display will be functional even when the
circuit breaker has no load. A Digitrip 1150 unit without
CAUTION auxiliary power will not provide voltage, display any data or
communicate.
THE M4 SCREW SHOULD BE TIGHTENED ONLY UNTIL
1.6.2 Alarm Contacts
IT IS SNUG. DO NOT USE A LARGE SCREWDRIVER. A
1/8" (3 mm) WIDE SCREWDRIVER BLADE IS AD- A second function of this module is to provide either a trip
EQUATE. or alarm output contact via the two customer programmed
relays within the module. An assortment of relay functions
1.3.3 Trip Unit/Rating Plug Removal can be assigned to these relays. (See the Aux Relay
programming in Appendix D-15 and Appendix G). Each
To remove the rating plug from the trip unit, open the rating relay is a normally open contact with a programming
plug door. Use a 1/8" (3 mm) wide screwdriver to loosen identification of RELAY A and RELAY C. On the Breaker
the M4 screw. Pull the door to aid in releasing the rating Master Connection Diagram (Appendix C) these contacts
plug from the unit.

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function is enabled by programming the Aux Relay B via

the front panel or via PowerNet communication (See
Appendix D-15). The block close function can be further
setup for “AUTO” or “MANUAL” reset via programming
(11Pxxx only). This trip condition requires a front panel
reset to clear the Block Close condition.

1.7 Standards

The Digitrip 1150 Trip Units are listed by the Underwriters

Laboratories, Inc.®, UL File E52096, for use in Magnum
Circuit Breakers. These devices were tested to the ANSI
C37.13 breaker standard and ANSI C37.17 trip unit
standard. Additionally, these same units are also listed by
the Canadian Standards Association (CSA) under file LR
43556.

All Digitrip units have also passed the IEC 947-2 test
program which includes radiated and conducted emis-
sions testing. As a result, all units carry the CE mark.

2.0 DESCRIPTION OF MAGNUM CIRCUIT BREAKERS

2.1 General
Magnum Circuit Breakers are tripped automatically on
Figure 1.4 Power/Relay Module for 1150 Trip Unit overload or fault current conditions by the combined
action of three components:
are labeled ATR_Alarm and ATR_latch. The ATR_latch is a
latching relay that will hold contact status even if auxiliary 1. The Sensors, which measure the current level and
power is lost to the circuit breaker. This relay does require provide the energy to trip
auxiliary power for resetting. The resetting of these relays
requires depressing the RESET pushbutton on the front 2. The Digitrip Trip Unit, which provides a tripping signal
panel of the Digitrip 1150. to the Trip Actuator when current and time delay
settings are exceeded
1.6.2.1 Ground Alarm 3. The low-energy Trip Actuator, which actually trips the
circuit breaker
A ground fault alarm is one of many possible programmable
alarms and can provide an early warning of a ground fault
condition in progress via an alarm LED. Figure 2.1 shows this tripping circuit for a typical Magnum
Circuit Breaker. This arrangement provides a very flexible
system, covering a wide range of tripping characteristics
In addition, this unit can be programmed to energize an described by the time-current curves referenced in
alarm relay upon this condition. The alarm relay will reset Section 9.2.
automatically if the ground current is less than the ground
alarm pickup setting.
The automatic overload and short circuit tripping charac-
teristics for a specific circuit breaker are determined by
On the LSIA style unit, a red ALARM ONLY LED (See the ratings of the installed current sensors with a match-
Figure 3.3) will indicate the presence of ground fault ing rating plug and the selected functional protection
current, when it is in excess of GROUND PICKUP setting. settings. Specific setting instructions are provided in
Ground tripping will not occur with the LSIA style unit. Section 4.
1.6.2.2 Block Close Relay When the functional protection settings are exceeded, the
Also in this module is a relay that can block the remote Digitrip unit supplies a trip signal to the Trip Actuator. As a
closing of a circuit breaker after a trip condition. This Block result, all tripping operations initiated by the protection

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functions of the Digitrip Trip Unit are performed by its spring and a coil. Nominal coil resistance is 24 ohms and
internal circuitry. There is no mechanical or direct mag- the black lead is positive. The circuit breaker mechanism
netic action between the primary current and the mechani- assembly contains a mechanism-actuated reset lever and
cal tripping parts of the circuit breaker, thus external a trip lever to actuate the tripping action of the circuit
control power is not required for overload or fault current breaker.
tripping.
When the Trip Actuator is reset by the operating mecha-
nism, the moving core assembly is held in readiness
WARNING against the force of the compressed spring by the perma-
nent magnet. When a tripping action is initiated, the low-
energy Trip Actuator coil receives a tripping pulse from the
IMPROPER POLARITY CONNECTIONS ON THE TRIP
Digitrip unit. This pulse overcomes the holding effect of the
ACTUATOR COIL WILL DEFEAT THE OVERLOAD AND
permanent magnet, and the moving core is released to
SHORT CIRCUIT PROTECTION, WHICH COULD RE-
trigger the tripping operation via the trip lever.
SULT IN PERSONAL INJURY.
2.3 Ground Fault Protection
OBSERVE POLARITY MARKINGS ON THE TRIP AC-
TUATOR LEADS AND CONNECT THEM PROPERLY Only the Digitrip 1150 cat# 11LSIG,11PLSIG and Digitrip
USING THE INSTRUCTIONS PROVIDED. 1150i cat. # 11IEC-EF,11PIECEF provide ground fault
protection.
2.2 Low-Energy Trip Actuator
2.3.1 General
The mechanical force required to initiate the tripping action
of a Magnum Circuit Breaker is provided by a special low- When the Digitrip 1150 family includes ground fault
energy Trip Actuator. The Trip Actuator is located under the protection features, the distribution system characteristics
black molded platform on which the Digitrip unit is sup- (for example, system grounding, number of sources,
ported. The Trip Actuator contains a permanent magnet number and location of ground points, and the like) must
assembly, moving and stationary core assemblies, a be considered along with the manner and location in which

Figure 2.1 Tripping Circuit for a Typical Magnum Circuit Breaker (Partial)

Effective 10/2004
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the circuit breaker is applied to the system. These ele- 2.3.3 Source Ground Sensing
ments are discussed in Sections 2.3.3 through 2.3.6.
Depending upon the installation requirements, alternate
The Digitrip 1150 family uses three modes of sensing to ground fault sensing schemes may be dictated (See
detect ground fault currents: residual, source ground, and Figures 2.6 and 2.7). The ground return method is usually
zero sequence (See Table 2.1). The breaker secondary applied when ground fault protection is desired only on the
contact inputs B-6 and B-7 are used to configure the trip main circuit breaker in a simple radial system. This
unit. A jumper from B-6 to B-7 programs the trip unit for method is also applicable to double-ended systems where
either a source ground or zero sequence configuration. a midpoint grounding electrode is employed. For this
Removing the jumper will program the unit for a residual mode of sensing, a single current sensor mounted on the
ground fault scheme. This jumper resides on the stationary equipment-bonding jumper directly measures the total
side of the switchgear assembly. In all three schemes, the ground current flowing in the grounding electrode
proper current sensor input is required on the external conductor and all other equipment-grounding conductors.
sensor input terminals B-4, B-5 of the breaker secondary
contacts. In the CURRENT (protection) submenu, there is a setting
(EXT GND CT RATIO) that enables the presentation of
ground pickup in amperes and the display of ground
Table 2.1 Digitrip Sensing Modes current in amperes when an External Ground CT is
Ground Circuit Breaker Digitrip GF employed. This screen is presented when jumper B-6 to
(Earth) Secondary Applicable Figure Sensing
Fault Sensing Contacts Req’d Breakers Reference Element Used B-7 is present for a trip unit equipped with GROUND.
Method External Ground CT ratios of 10, 25, 50, 100, 200, 400,
Residual No Jumper 3 or 4 pole 2.2, 2.3, 2.5, 2.9 element R5 800, 1000 A:1 and “none” settings are selectable, with
Source Ground Jumper B6 to B7 3 pole only 2.7 element R4 “none” defaulting to the plug (In) rating. With the correct
Zero Sequence Jumper B6 to B7 3 pole only 2.8 element R4 ratio selected the GF pickup settings are adjustable in
Note: This information applies to Trip Units with Ground amperes.

2.3.2 Residual Sensing - 3-Wire or 4-Wire 2.3.4 Zero Sequence Sensing

Residual Sensing is the standard mode of ground fault Zero Sequence Sensing, also referred to as vectorial
sensing in Magnum Circuit Breakers. This mode utilizes summation (See Figure 2.8), is applicable to mains,
one current sensor on each phase conductor and one on feeders, and special schemes involving zone protection.
the neutral for a 4-wire system (Shown in Figures 2.2 Zero Sequence current transformers (4 1/2“ x 13 1/2“ [114
and 2.3). If the system neutral is grounded, and no phase mm x 342 mm] rectangular inside dimensions) are
to neutral loads are used (a three wire system), the Digitrip available with 100:1 and 1000:1 ratios. The EXT GND CT
1150 with ground includes all of the components neces- RATIO setting described above is applicable for zero
sary for ground fault protection. This mode of sensing sequence.
vectorially sums the outputs of the three individual current
sensors. For separately-mounted neutrals, as long as the 2.3.5 Multiple Source/Multiple Ground
vectorial sum is zero, then no ground fault exists. The
neutral sensor (for a four wire system) must have charac- A Multiple Source/Multiple Ground scheme is shown in
teristics and a ratio which matches the three internally- Figure 2.9. In this figure, a ground fault is shown which
mounted phase current sensors. Available types of neutral has two possible return paths, via the neutral, back to its
sensors are shown in Figure 2.4. Residual ground fault source. The three neutral sensors are interconnected to
sensing features are adaptable to main and feeder circuit sense and detect both ground fault and neutral currents.
breaker applications.
2.3.6 Ground Fault Settings

CAUTION The adjustment of the ground fault functional settings and

their effect upon the ground fault time-current curve is
discussed in Section 4.2.1.8.
IF THE SENSOR CONNECTIONS ARE INCORRECT, A
NUISANCE TRIP MAY OCCUR. ALWAYS OBSERVE THE
2.4 Current Sensors for Standard Breaker
POLARITY MARKINGS ON THE INSTALLATION DRAW-
INGS. TO INSURE CORRECT GROUND FAULT EQUIP- The three (3-pole) or four (4-pole) primary current sensors
MENT PERFORMANCE, CONDUCT FIELD TESTS TO are located in the circuit breaker on the lower conductors
COMPLY WITH NEC REQUIREMENTS UNDER ARTICLE of the breaker. The current sensor rating defines the circuit
230-95(C).

Effective 10/2004
I.L. 70C1036H05 Page 13

breaker rating (In). For example, 2000A:1A sensors are circuit breaker if the chip temperature is excessive. If the
used on a 2000A rated circuit breaker. There are also four unit trips on over-temperature, the red Long Delay Time
auxiliary current transformers with a ratio of 10:1 which LED will flash and the OVER TEMP TRIP message will
further step down the rated current to 100 milliamperes, appear on the display.
which is equivalent to 100% (In) in the Digitrip 1150.
The Digitrip uses the Cutler-Hammer custom-designed
The primary current sensors produce an output propor- CHip™, an integrated circuit that includes a microcom-
tional to the load current and furnish the Digitrip 1150 puter to perform its numeric and logic functions. The
family with the information and energy required to trip the principles of operation of the trip unit are shown in Fig. 3.1.
circuit breaker when functional protection settings are
exceeded. All sensing and tripping power required to operate the
protection function is derived from the current sensor
secondary currents whenever the circuit breaker is carrying
current. These current signals develop analog voltages
across the current viewing resistors. The resulting analog
WARNING voltages are digitized by the CHip™.

IF A SET OF CURRENT SENSORS WITH A DIFFERENT The microcomputer continually digitizes these signals.
RATIO ARE INSTALLED IN THE FIELD, THE RATING This data is used to calculate true RMS current values,
PLUG MUST ALSO BE CHANGED. THE ASSOCIATED which are then continually compared with the protection
RATING PLUG MUST MATCH THE CURRENT SENSOR function settings and other operating data stored in the
RATING SPECIFIED ON THE PLUG LABEL. THE CUR- memory. The embedded software then determines whether
RENT SENSOR RATING CAN BE VIEWED THROUGH to initiate protection functions, including tripping the circuit
OPENINGS IN THE BACK OF THE CIRCUIT BREAKER. breaker through the Trip Actuator. (TA)
ALSO VERIFY DESIRED PROTECTION SETTINGS
AFTER THESE COMPONENTS ARE CHANGED. 3.2 Trip and Operation Indicators
The four cause of trip LEDs on the face of the trip unit,
shown in Figures 1.1 and 3.2 to 3.5, flash red to indicate
2.5 Current Sensors for Double Wide Circuit Breakers the reason for any automatic trip operation. Each LED is
strategically located in the related segment of the time-
The six (3-pole) or eight (4-pole) current sensors installed current curve depicted on the face of the trip unit. The
in the circuit breaker are located on the lower conductors. reason for the trip is identified by the segment of the time-
The poles are paralleled and the corresponding current current curve where the LED is illuminated. Following an
sensors are also paralleled (See Figure 2.3). for example, automatic trip operation, the backup battery shown in
a 4000A circuit breaker phase rating has two 2000:1 Figure 3.1 continues to supply power to the LEDs. The
current sensors wired in parallel, which provides an overall LED pulse circuit, also shown in Figure 3.1, is provided to
ratio of 4000:2. The auxiliary current transformers have a reduce battery burden and will flash the trip LED approxi-
ratio of 20:1 in this size circuit breaker to futher step down mately every 4 seconds. Therefore, it is important to view
the full load current to 100 mA. the unit for at least 5 seconds to detect a flashing trip
indicator. Pushing the Reset button extinguishes the LED.

NOTE: A complete reset of the Digitrip 1150 requires the

3.0 PRINCIPLES OF OPERATION unit to be powered (Status LED flashing) when depressing
the Reset pushbutton. Otherwise, a previous trip event
3.1 General may be indicated again by the LED.
The Digitrip 1150 family of trip units is designed for indus-
trial circuit breaker environments where the ambient 3.2.1 Status/Long Pickup LED
temperatures can range from –20° C to +85° C, but rarely
exceed 70° to 75° C. If, however, ambient temperatures The green Status LED will indicate the operational status
exceed this range, the trip unit performance may be of the protection CHip A microprocessor of the trip unit.
degraded. In order to insure that the tripping function is not Even with no external power present, if the load current
compromised due to an over-temperature condition, the through the circuit breaker exceeds approximately 12 per-
Digitrip 1150 microcomputer chips have a built-in over- cent (3 phase power) of the current sensor rating, the LED
temperature protection feature, factory set to trip the will flash on and off once each second indicating that the

Effective 10/2004
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trip unit is energized and operating properly (See Figure wireslabeled Zone In (Zin) and Zone Out (Zout) along with a
3.1). Zone Common wire. The Zone Selective Interlocking
function combines the interlocking of Short Delay and
In an overload (Long Pickup) condition this status LED Ground Fault. A zone out signal is issued if the ground
flashes at approximately 4 times per second while the fault pick-up is exceeded or if the short delay pickup is
overload persists. exceeded or if the value of 2 x (Ir) is exceeded. Zone
Selective Interlocking provides the fastest possible tripping
3.2.2 Alarm LED for faults within the zone of protection of the circuit breaker
and yet also provides positive coordination among all
In addition to the green status LED, a yellow alarm LED is circuit breakers in the system (mains, ties, feeders, and
provided to indicate real time alarm conditions existing on downstream circuit breakers) to limit a power outage to
the power system. See Appendix D-16 for the programing only the affected parts of the system. When Zone Inter-
of these alarms. Also, if an unusual condition is detected locking is employed, a fault within the zone of protection of
within the Digitrip’s hardwire or firmware, this LED will light the circuit breaker will cause the Digitrip 1150 to:
along with an ALARM message.
• Trip the affected circuit breaker immediately and, at the
3.2.3 Trip LED same time,

The trip LED is illuminated upon any trip condition. It is • Issue a signal to upstream Digitrip units to restrain from
also a real time display and incorporates the circuit tripping immediately. The restraining signal causes the
breaker’s 52b auxiliary switch (also called MCR switch) upstream circuit breakers to follow their set coordination
input for its logic. Pushing the Reset pushbutton or closing times, so that the service is only locally disrupted while
the circuit breaker will clear this LED. the fault is cleared in the shortest time possible.

3.3 Making Current Release For an example of how Zone Selective Interlocking may be
used, see Appendix A of this Instructional Leaflet.
All Digitrip 1150 Trip Units have a Making Current Release
function. This safety feature prevents the circuit breaker 3.5 PT Module
from being closed and latched-in on a faulted circuit. This
is a nonadjustable sensing circuit. It is preset to trip at an The PT (Potential Transformer) Module (See Fig. 3.0 and
instantaneous current numerically equivalent to 25 x (In). Appendix C) is internally wired in the circuit breaker to the
(Note that currents of ~11 x (In) with maximum asymmetry line side circuit breaker terminals. It provides signal data to
also reach this threshold.) calculate voltage, power, energy and related data. The PT
module is a three phase, three wire input and three wire
The Making Current Release is enabled only for the first output step down transformer with a wye to wye hookup.
two cycles following an initial circuit breaker closing
operation. The Making Current Release will trip the circuit The power (and energy) metering and protection is calcu-
breaker instantaneously and flash the Instantaneous LED lated with the convention that power flow is from top to
as well as indicating “Making Current Trip” on the display bottom through the circuit breaker. This assumes the top
panel. side conductor to be the line side. If the distribution
system is such that the bottom side is the hot side, the
3.4 Zone Interlocking power values will indicate Reverse Power. This reading can
be made an absolute value by installing a jumper from B-3
to B-7 of the secondary contacts.
CAUTION

IF ZONE INTERLOCKING IS NOT TO BE USED AND CAUTION

ONLY STANDARD TIME-DELAY COORDINATION IS
INTENDED, JUMPER TERMINAL B8 TO B9 ON THE A DIELECTRIC DISCONNECT PLUG LOCATED ON THE
CIRCUIT BREAKER SECONDARY CONNECTOR. LEFT SIDE OF THE CIRCUIT BREAKER IS PROVIDED
WITH THIS MODULE AND IS TO BE REMOVED WHEN
Zone Selective Interlocking (or Zone Interlocking) is DIELECTRIC TESTING OF THE CIRCUIT BREAKER IS
available on the Digitrip 1150 for the Short Delay and CONDUCTED. FAILURE TO REMOVE PLUG WHEN
Ground Fault protection functions (See Figure 3.1). The TESTING CAN RESULT IN DAMAGE TO TRIP UNIT AND
zone interlocking signal is wired via a single set of PT MODULE.

Effective 10/2004
I.L. 70C1036H05 Page 15

Source
LN LA LB LC
Black
+
Trip
Actuator - Digitrip
with GF
1 10:1

R/1 1

1
1
R5
2
B-7
B-6
B-5

B-4
R/1 10:1 AUX. CT
3
Load

Notes:
1 In this scheme, all breaker secondary currents (at the 100mA level) are summed together at the
pc board donut transformer to sense ground fault via element R5.

2 No jumper on secondary contacts B-6, B-7.

3 Neutral input (if 4-wire) is via contacts B-4, B-5. Neutral current input to secondary contacts is 1A,
equivalent to 1 per unit ground.

Figure 2.2 3-Pole, 4-Wire Circuit Breaker with Neutral Sensor Connections for Standard Circuit Breaker Using Residual
GF Sensing

Source
LN1 LN2 LA1 LB1 LC1 LA2 LB2 LC2 3

Black
+
Trip Digitrip
Actuator - with GF
20:1
2000:1 2000:1

2
2000:1 2000:1

2000:1 2000:1
R5
B-7
B-6

B-5
2000:1
B-4
20:1 AUX. CTs

2000:1 Load

Notes:
1 In this scheme, all breaker secondary currents (at the 100mA level) are summed together at the PC
board donut transformer to sense ground fault via element R .
5
2 In this scheme, the current sensors in the breaker poles are parallel-wired to achieve a 4000 amp
breaker rating. Other available ratings in this double-wide configuration are 6300A, 6000A, 5000A,
3200A, 2500A, and 2000A.
3 Shown is ABCABC bus configuration.

Figure 2.3 Neutral Sensor Connections for Double Wide Circuit Breaker Using Residual Ground Fault Sensing

Effective 10/2004
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Figure 2.4 Digitrip Neutral Sensor Types

This will defeat all ground fault protection in application for 4 pole breaker.

Figure 2.5 4-Pole-3200A Standard Circuit Breaker Using Residual Ground Fault (Earth-Fault) Sensing

Effective 10/2004
I.L. 70C1036H05 Page 17

1150

Figure 2.6 Source Ground Fault Sensing Scheme for Standard Circuit Breaker

Notes:

1 In this scheme, the current sensors in the circuit breaker poles are parallel-wired to achieve a 4000 Amp circuit breaker
rating. The ground fault is sensed directly via element R4.

2 A jumper is required on B-6, B-7 secondary contacts to program the Digitrip 1150 to use element R4 directly for source
ground sensing. If the circuit breaker is removed from the cell (B-6, B-7), jumper disconnected, Residual Ground setting
will apply.

3 Source ground sensor input is via B-4, B-5. Source ground current input to secondary contacts is 2A, equivalent to one
per unit ground. For example: Applying a 400:1 sensor - Use 800:2 ratio and use 800A value to calculate the ground pickup
setting.

4 The scheme is not applicable to 4-pole circuit breakers. No secondary contacts (B-4 & B-5) are available on 4-pole
circuit breakers. DO NOT jumper B-6, B-7 in 4-pole applications.

Figure 2.7 Source Ground Fault Sensing Scheme for Double Wide Circuit Breaker

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Page 18 I.L. 70C1036H05

If the breaker is removed

from cell (B-6,B-7) jumper disconnected, Residual Ground settings will apply.

Figure 2.8 Zero Sequence Sensing Scheme for Standard Circuit Breaker

IG/2 N φ φ N IG/2

IG /2
IG /2

B5 ig/2 ig
ig/2
B5
B4
IG
ig/2
Internal
B4 Digitrip
M2 Sensor
M1
iG/2 ig
T

R5
R5
B5 ig/2 B4

Neutral Sensors Wired

R5 IG in a Loop Configuration

Notes:
Breaker M2 trips since this is the only breaker seeing the IG fault via element R5 .

No jumper on B-6, B-7 terminals - all breakers are programmed for standard Residual Ground Fault
protection.

AUX CTs not shown. Wiring needed at system level is shown as a dotted line.

Capital letters represent primary current. Lowercase letters represent secondary current.

The three breakers (M1, M2, and T) must all have the same breaker/sensor rating.

Figure 2.9 Multiple Source/Multiple Ground Scheme

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I.L. 70C1036H05 Page 19

A SELect pushbutton action will provide direct entry into

PROGRAM SETTING menu. The first item presented is
the Current CURVE type. LSIG or IEEE or (IEC) current
curve types are possible selections depending on trip unit
style. Pressing SELect again will select the curve pre-
sented in the window center and then step into the indi-
vidual elements that need programmed. The VIEW up and
down arrow selects the function while the EDIT up and
down arrow changes value. After they are set they need to
be saved by depressing the SAVE pushbutton. The saving
will place the customer settings in use. Verify the new
settings. See Appendix D-13 for program curve and D-19
for saving and D-5 for view setting menu.

4.1.2 Pushbutton Definition

View Functions

The “View Functions” group of pushbuttons is located in

the lower right hand side of the unit and includes the View
Up (up arrow), View Down (down arrow), ESCape, SELect,
and Reset buttons.

View Up / View Down - View Up and View Down allow the

user to scroll through any available menu or submenu in
the Digitrip 1150 display.
Figure 3.0 PT Module with Dielectric Disconnect Plug
SELect - The SELect pushbutton selects the submenu for
the blinking selection located in the middle of the display.
4.0 PROGRAMMING/VIEWING DIGITRIP 1150
(VIA FRONT PANEL) ESCape - The ESCape pushbutton brings the user up to
the previous menu in the display. Multiple ESC pushbutton
4.1 Main Menu
operation will display Main Menu screen.
4.1.1 Power Up Sequence
Reset - The Reset pushbutton will reset LEDs and screen
When the Digitrip 1150/1150i unit is first powered-up, two data (See Reset Sequence).
different display messages are possible. If the Digitrip has
been previously commissioned with customer-made Edit Values
settings, the display will alternate between “Customer
Settings in Use” and “Eaton-Electrical DT 1150” mes-
The “Edit Values” group located in the upper left hand
sages. Following this the display will enter into the main
corner of the Digitrip 1150 unit consists of 3 pushbuttons:
menu (See Appendix D-1).
Edit Up (indicated by an up arrow), Edit Down (down arrow)
and Save. The Edit Values pushbuttons are covered by a
If Digitrip settings have not been saved previously the trip Plexiglass cover which can be sealed.
unit is using the factory default values. On power up, the
Digitrip will then display “CHANGE FACTORY SETUP?”.
Edit Up / Edit Down - Edit Up and Edit Down allow the user
This message will stay on the screen until the user
to scroll up or down, respectively, through available setting
presses ESCape or the SELect pushbutton or until an
values while in any Program Settings submenu. In the Test
alarm or trip condition is detected.
Menu, these buttons will raise or lower the test level when
performing a self test.
The ESCape pushbutton action will keep the factory
settings and then will enter the main menu. The factory
Save - The Save pushbutton allows the user to save a
settings are listed in Appendix D-25 and are not valid for
group of selected programmable settings from any
most applications. The appropriate settings need to be
submenu in the PGM SET menu. Save is also used in the
defined by a qualified application engineer to provide best
overall protection and coordination for the power system.

Effective 10/2004
 Page 20
(Line/Upper)
N A B C
POWER/RELAY Trip
Module Actuator
TA
Making Current
Release Circuitry FET
(See Section 3.3)

Current Sensors Trip

Trip LEDs
TM +3V Battery
Status CHip Chip
LED A 4 bit LED
Latch Pulse
CURRENT Chip Circuit
Protection
Internal
Bridge ZIN
Power Zone Interlocks
Circuits ZOUT
Supply
Rating
Plug

Figure 3.1 Digitrip 1150 Block Diagram with Circuit Breaker Interface
Accessory
Bus

Alarm
Residual TM

Ground CHip Chip Trip

Detection B
Display &
VOLTAGE
AUX CTs PROTECTION
(Load/Lower) INCOM
Trans-
Typical Phase or ceiver
Ground Sensing Key
Resistor
Pad Aux Relay
PT Module Drivers

Effective 10/2004
I.L. 70C1036H05
I.L. 70C1036H05 Page 21

Figure 3.2 Digitrip 1150 LSI Figure 3.3 Digitrip 1150 LSIA

Figure 3.4 Digitrip 1150i IEC Figure 3.5 Digitrip 1150i IEC-EF

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Page 22 I.L. 70C1036H05

TEST Menu. When prompted, pressing Save will begin the timestamp of event and view down to observe
selected test. trip current data. This data, along with
timestamp will also be stored in Event Log. The
Battery Test - The Battery Test pushbutton is located on maximum trip current value that can be
the right side of the Digitrip 1150 unit, just above the rating displayed is 65535 A.
plug door. Battery Test will light the green LED located 4. After any trip condition, the trip unit should be
above the pushbutton to ensure proper voltage in the reset by pressing the Reset Pushbutton. (See
battery. section 4.1.4.2 on pending Alarm Events)
5. Reclose circuit breaker as desired.
4.1.3 Blink mode
See Appendix D-4 for possible Trip Events and screen data
Middle Blinking - The middle display, if blinking, indicates displayed after a trip by using the View Down (down arrow)
that the menu item is selectable or that a submenu exists pushbutton.
when a selection brings up another menu with middle text
blinking.
4.1.5.2 Alarm Events
4.1.4 Programming/Viewing Screens
Alarms are tracked in real time and a Reset pushbutton
The View Functions control screen viewing, while Edit may momentarily clear the alarm but the Alarm LED and
Functions apply to programming and storing settings. Alarm message will reappear if condition is still present.
ALWAYS VERIFY PROGRAMMED SETTINGS BY
ENTERING VIEW SETTINGS AFTER SAVING. The ESCape pushbutton activation will remove the alarm
All screens are viewable depending on the programmed message from the display and return to normal menu
settings and/or Digitrip 1150 model. In particular, the viewing mode, but the yellow alarm LED will remain lit, as
METER submenu may be programmed to include any- the alarm is in the system (See Appendix D-22).
where from one to 22 viewable screens when METER is
selected, based on the settings chosen in the PGM Note: A way to clear an alarm if desired, after
SET\DISPLAY screens. Similarly, certain screens are only reviewing the alarm and its associated data, is to
viewable based on availability. For example, in the PGM enter the PGM SET Menu followed by the ALARM
SET\AuxRLY menu, the selected relay determines the submenu. The user can then revise or turn off the
programmable groups displayed. See Appendix D. associated alarm set point value.

Depending on the Digitrip 1150 model, certain menus or See Appendix D-4 for possible Alarm Events and D-22 for
screens are not viewable or programmable. When using multiple Alarm conditions.
the LSI factory style unit, viewing and programming menu
screens involving Ground or Earth settings are not acces-
4.1.5.3 Data resets in Meter screen
sible. When using the LSIG factory style unit, viewing and
programming screens involving Neutral Protection are not
displayed. A Reset pushbutton operation will reset data values or
group of values if the Reset pushbutton is depressed when
screen value is displayed (See Appendix D-3 Meter Menu).
4.1.5 Reset Pushbutton Operation (After Trip)
4.1.5.1 Trip Events 4.2 Program Settings PGM SET

4.2.1 Current Curve Type Selection and Pickup/Time

A Reset pushbutton operation does the following after a
Settings
trip:
a. Clears the cause of trip flashing LEDs (4) after a trip 4.2.1.1 General
event
b. Clears the Trip LED Before placing any circuit breaker in operation, set each
c. Clears Display data trip unit protection setting to the values specified by the
engineer responsible for the installation. Each setting is
programmed using the front panel pushbuttons and Save
Note: After a Trip Event when the desired settings are selected. A few settings are
1. Observe any Trip LED flashing on Mimic Curve. interdependent (the LONG PU (Ir) rating will indirectly
2. Observe message on LED display. affect the SHORT PU value). Therefore, always verify
3. Push View Down pushbutton to observe these settings after programming by entering View
Settings Menu.

Effective 10/2004
I.L. 70C1036H05 Page 23

The installed rating plug must match the current sensors NOTE: (Ir) is also the basis for the Short Delay Current
which establish the maximum continuous current rating of Setting (See Section 4.4).
the circuit breaker (In). Instantaneous and ground current
settings are defined in multiples of (In).
Pu
To illustrate the effect of each protection setting, simulated
time-current curves are pictured on the face of the trip unit. .4, .45, .5, .55, .6, .65
Should an automatic trip occur (as a result of the current .7, .75, .8, .85, .9, .95, 1.0
exceeding the pre-selected value), the LED in the appropri-
ate segment of the simulated time-current curve will flash
red, indicating the reason for the trip.

All Digitrip 1150 and Digitrip 1150i offer the LSI(G) curve as
the standard factory default. The five segment straight line Figure 4.1 Long PU Settings
curve of LONG PU and Time, SHORT PU and Time, and
INSTantaneous PU are depicted on the nameplate of the
product. The GROUND (EARTH) element is shown also on
styles with Ground Fault Protection. The LSIA style has 4.2.1.4 LongTIME Setting
Ground Alarm Only function (See Appendix D12-D13). There are forty five available Long Delay Time Settings I2T,
as illustrated in Figure 4.2, ranging from 2 to 24 seconds.
A second curve selection is also possible for UL/ANSI For the I4t slope there are nine settings ranging from 1 to 5
styles. An IEEE curve that accurately follows the Inverse- seconds. These settings represent the total clearing times
Time characteristic equations can be selected (IEEE draft when the current value equals six times (Ir).
PC37.112-11/95). Curve shapes of MODerately INVerse,
VERY INVerse or EXTremely INVerse are available under
PHASE SLOPE. Each of these curve shapes have a
PICKUP and TimeDIAL selection to position the curve. The
short delay function is included as part of IEEE curve.

For the Digitrip 1150i, a second curve type is also possible

2, 2.5, 3, 3.5,4, 4.5,…
for the international styles. An IEC curve type that accu- 22, 22.5, 23, 23.5, 24
rately follows the IEC255 curve equations can be selected.
The curve shapes of IEC-A (normal inverse), IEC-B (very
Pu
inverse) and IEC-C (extremely inverse) are available under
PHASE SLOPE. Each of these curve shapes have a
PICKUP and TimeDIAL selection to position the curve. The
short delay function is included as part of IEC curve.

The available settings, for the LSIG standard curve along

with the effects of changing the settings, are described
below and in Figures 4.1 through 4.8. Sample settings are
represented in boxes (e.g. )
Figure 4.2 Long Delay Time Settings
4.2.1.2 LONG SLOPE Setting
NOTE: In addition to the standard Long Delay Protection
There is a I2t or I4t curve shape selection possible for Element, the Digitrip 1150 trip units using LONG SLOPE
LONG SLOPE. settings of I2t or I4t also have a Long Time Memory (LTM)
function, which protects load circuits from the effects of
4.2.1.3 LONG PU Setting repeated overload conditions. If a circuit breaker is closed
soon after a Long Delay Trip, and the current again ex-
There are thirteen available Long Delay Settings as ceeds the Long Delay Setting, (Ir), the LTM automatically
illustrated in Fig. 4.1. Each setting, called (Ir), is ex- reduces the time to trip to allow for the fact that the load
pressed as a multiple (ranging from .4 to 1) of the current circuit temperature is already higher than normal because
(In). of the prior overload condition. Each time the overload
condition is repeated, the LTM causes the circuit breaker
to trip in a progressively shorter time. When the load

Effective 10/2004
Page 24 I.L. 70C1036H05

current returns to normal, the LTM begins to reset; after

about 10 minutes it will have reset fully, so the next Long
Delay trip time will again correspond to the Setting value.
Short Delay
NOTE: In certain applications and field testing, it may be Time
desirable to disable the LTM function by disabling this
.4 Sec.
function in Program Settings.

The action of the LTM must be considered when performing

multiple Long Delay Time tests (See Section 5.4).

4.2.1.5 SHORT PU Setting

Available Settings
There are at least nineteen available Short Delay Current
Settings, as illustrated in Figure 4.3. Eighteen settings are .1, .15, .2, .25, .3, .35,
.4, .45, .5
in the range from 1.5 to 10 times (Ir). REMEMBER: (Ir) is
the Long PU Current Setting. The maximum value M1 Seconds with
depends on the sensor rating of the circuit breaker and is FLAT SHORT SLOPE
listed in Note 3 of Table 1.1.

Short PU
I2t SLOPE
Setting
Returns to FLAT
2 x Ir Response at Currents
Higher than 8x Ir

(Ir) .1, .15, .2,.25, .3, .35,

.4, .45, .5
Additional M1 Value is Specified on Rating Plug Seconds with
2
I t SHORT SLOPE
Figure 4.3 Short Delay Current Settings

4.2.1.6 SHORT TIME Setting 8x Ir

As illustrated in Figure 4.4, there are two different Short Figure 4.4 Short Time Settings
Delay Slopes: fixed and I2t. The shape selected depends
on the type of selective coordination chosen. The I2t
4.2.1.7 INST PU Setting
response curve will provide a longer time delay for current
below 8 x Ir than will the FLAT response curve. There are at least 18 available Instantaneous Current
Settings, as illustrated in Figure 4.5. The value that M1
NOTE: The I2t response for Short Time is not available if has depends upon the sensor rating of the circuit breaker
LongTime is set for I4t, IEEE or IEC curve. and is specified both on the rating plug label and on the
applicable time-current curves referenced in Section 9.2.
Nine FLAT and nine I2t response time delay settings are The Instantaneous Pickup is based on the plug (In) rating.
available. The I2t response is applicable to currents less
than 8 times the ampere rating of the installed rating plug 4.2.1.8 GND PU Setting
(Ir). For currents greater than 8 x (Ir) the I2t response
reverts to the FLAT response. The Ground Fault Current Settings are labeled with values
from .24 to 1.0x (In) in 0.01 increments (See Figure 4.6).
NOTE: Also see Section 3.4, Zone Interlocking. The ANSI/UL models are limited to 1200A, as shown in
Table 1.1. The IEC-EF model Earth Pickup range is 0.10
to 1.0x (In) with no 1200A limitation. External control
power is required to insure earth fault tripping for fault
currents and earth fault setting less than .24 per unit.

Effective 10/2004
I.L. 70C1036H05 Page 25

again, so that a sputtering fault may not be detected. With

Available Settings the GROUND FAULT MEMORY function, the trip unit
Inst.
“remembers” the sputtering ground current for up to ten
6 x In 2, 2.5, 3, ...
9, 9.5, 10... (10) times the Ground Fault Time Setting. After that time, it
9, 9.5, 10, 10.5, 11, 11.5, 12, OFF or resets automatically. The GROUND FAULT MEMORY
9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, function resets quickly; on the 0.1 second setting, for
13.5, 14, OFF
example, the function will reset in 1.0 second.
In Multiples of
M1 Max setting possible is specified on rating plug . Rating Plug
Amperes (In)

Gnd. Time
Figure 4.5 Instantaneous Current Settings .3 Sec.

Available Time Settings

Available Settings .1, .15, .2, ... .4, .45, .5
Gnd PU .24, ... 1.0 Seconds with
Setting 2
FLAT or I T GROUND SLOPE
.4 x In

2
I t SLOPE
Returns to FLAT
Response at
Approximately
0.625 In

Figure 4.6 Ground Fault Current Settings

4.2.1.9 GROUND TIME Setting Figure 4.7 Ground Fault Time Delay Settings

As illustrated in Figure 4.7, there are two different Ground 4.2.1.10 AMP UNBALANCE, PHASE LOSS
Fault Slopes: fixed time (FLAT) or I2t response. The shape
selected depends on the type of selective coordination 4.2.1.10.1 Amp Unbalance
chosen. The I2t response will provide a longer time delay
for current below 0.625 x In than will the FLAT response. The Amp Unbalance trip function can be selected in the
Program Settings - Program Curve menu (See Appendix D-
Nine Ground Time Settings for both FLAT and I2t re- 12). It is set to OFF as a factory default. The pickup
sponses for currents less than 0.625 times the ampere unbalance is adjustable from 5% to 25%. Once selected,
rating of the installed rating plug (In). For currents greater an associated time delay is adjustable from 0 to 240
than 0.625 x (In) the I2t response reverts to the FLAT seconds with initial factory default of 10 seconds. The
response. setting time tolerance is +/- 3% or +/- 0.3s (whichever is
greater). A difference between Max phase and Min phase
higher than the Amp Unbalance % settings will cause the
NOTE: Also see Section 3.4, Zone Interlocking.
breaker to trip with an AMPERES OUT OF BALANCE
message and red Trip LED illuminated in the right corner of
In addition to standard Ground Fault protection, the Digitrip the Digitrip front panel. This function does require
1150 Trip Unit also has a GROUND FAULT MEMORY external auxiliary power to the Digitrip unit. To avoid
function which serves to protect loads in the event of a unnecessary operation of this function the circuit breaker
sputtering arc to ground. Without this function, the trip unit must be carrying 55% of the Ir rating on at least one phase
resets each time the arc sputters, and times out all over before it will trip via Amp Unbalance.

Effective 10/2004
Page 26 I.L. 70C1036H05

4.2.1.10.2 Phase Loss - (Current Based) main conductors at the top of the circuit breaker. This is
the factory wired setup. A factory option does exist to
The phase loss trip function can be selected in the Pro- enable bottom end of circuit breaker sensing of voltage.
gram Settings - Program Curve Menu (See Appendix D-
12). It is set to OFF initially as a factory default. A Time NOTE: Frequency is sensed on phase A voltage input.The
Delay of 1 to 30 seconds can be selected. If there exists a Frequency Trip, Voltage Trip or Alarm function will not be
75% difference between the Max phase and Min phase active if this voltage falls below 84 volts phase to phase.
currents and if maintained for the selected time delay, the
breaker will trip with a PHASE LOSS TRIP message and 4.2.2.2 Voltage, Frequency Trip
red Trip LED illuminated in the right corner of the Digitrip
front panel. This function does require auxiliary power Voltage and Frequency Protection Trip functions, if en-
to the Digitrip unit. To avoid unnecessary operation of abled, are active whenever the circuit breaker is
this function the circuit breaker must be carrying 55% of closed.These trip functions are made inactive after a trip or
the Ir rating on at least one phase before it will trip via when the circuit breaker opens. The function will be
Phase Loss. rearmed when the circuit breaker is reclosed. Observe the
cause of trip message after a trip event then reset the
4.2.2 Voltage - Frequency, Reverse Power Digitrip by depressing the Reset pushbutton. At this time
observe the real time data of the parameter that initiated
Refer to Table 1.1d for a tabulation of functions available the trip to see if it is still beyond the specified limit.
versus the catalog number. Voltage and Frequency and Voltage and frequency data in the Meter menu is real time
Reverse Power tripping and/or Alarming can be set by data independent of whether the circuit breaker is open or
entering the VOLTAGE menu under the Program Setting closed. Enter the EventLog menu and observe the event
main menu. Please refer to Appendix D-23 for the trip that initiated the trip. When the parameter returns to within
settings available and Appendix D-16 for the Alarm settings its limits, reclose the circuit breaker if desired.
available. The Alarms can be mapped to Relay A and the
Trips to Relay B and Relay C for desired relay contact 4.2.2.3 Voltage, Frequency Alarms
action.
These alarms can be enabled by the user by entering the
The Voltage function (Frequency and Reverse Power Program Settings and then the Alarms submenu.Alarms
included) has a master switch “voltage setting” [enabled/ are real time and are active when the circuit breaker is in
disabled] that can toggle all voltage related trip and alarm either the open, closed or trip state. The alarm LED will
settings. The individual selections can, in addition, be light to indicate an alarm condition.
enabled or disabled as desired.
NOTE: If an UnderFrequency or OverFrequency Trip or
NOTE: When programming the Voltage or Frequency Alarm is enabled, the following restriction applies: Trip
setting for Trip or Alarm, there exists a setting units used on 50 Hz systems have valid frequency sensing
interdependancy feature that prevents the user from range of 43 to 59 Hz. Trip units used on 60 Hz systems
making an “over-lapping” under and over value combination. have a valid frequency sensing range of 51 to 70 Hz. All trip
When this condition is encountered, change the value or units leave the factory set for 60 Hz. For frequencies
disable the “opposite” setting temporarily to achieve the outside the applicable range, the unit will display the alarm
desired setting. message “FREQ OUT OF BOUNDS”.

4.2.2.1 Voltage, Frequency Protection This alarm message also can occur if the system fre-
quency setpoint does not match the nominal power
These functions, unlike the LSIG Current protection system frequency. If this message is encountered, check
functions, do require a reliable source of auxiliary or change the frequency setting in the System menu. The
power available on circuit breaker secondary con- FREQ display screen in the Meter sub-menu will display
tacts A-14, A-15. If the circuit breaker is equiped with the dashes, “-----“, instead of a numerical frequency.
24-48VDC Power/Relay Module, the (+) voltage input is
terminal A-14.Refer to the breaker information label for The circuit breaker will not initiate a frequency related trip
proper trip unit power voltage and see also Section 1.6 and when programmed to provide frequency tripping for frequen-
Appendix C. cies out of bounds. However, the alarm relay Relay A, if
programmed for frequency alarming, will operate during an
The Voltage is sensed on all three phases. Any phase to out of bounds condition as well as within the valid fre-
phase voltage exceeding the specified setting will activate quency range of operation.
the protection function. The voltage sensing points are the

Effective 10/2004
I.L. 70C1036H05 Page 27

EXAMPLE 1 (Assumes line to line voltage > 84V)

ProGRam SETting
SYSTEM FREQ 60Hz
VOLTAGE VOLTAGE SETTINGS ENABLED
UnderFREQ TRIP 58.0Hz
ALARMS
UndrFREQ ALARM 59.0Hz
AuxReLaY A
RELAY A UF ALARM ENABLED

Applied Freq. TRIP UF ALARM FREQ OUT OF BOUNDS ALARM RELAY A Operation
1 to 50.8 NO NO YES YES
51.1 to 57.95 YES YES NO YES
58.1 to 58.95 NO YES NO YES
59.0 to 69.7 NO NO NO NO
>70 NO NO YES YES

EXAMPLE 2 ProGRam SETting

SYSTEM FREQ 50Hz
VOLTAGE VOLTAGE SETTINGS ENABLED
UnderFREQ 49.8Hz
OverFREQ 50.2 Hz
ALARMS
UndrFREQ 49.8Hz
OverFREQ 50.2Hz
AuxReLaY A
RELAY A UF ALARM ENABLED
RELAY A OF ALARM ENABLED

Applied Freq. TRIP UF ALARM OF ALARM FREQ OUT OF BOUNDS ALARM RELAY A Operation
1 to 42.9 NO NO NO YES YES
43.1 to 49.5 YES YES NO NO YES
49.85 to 50.15 NO NO NO NO NO
50.3 to 58.7 YES NO YES NO YES
>59 NO NO NO YES YES

Table 4.1 Examples of the Circuit Breaker and Relay A Operation Versus Frequency

The setting range for UnderFrequency or OverFrequency if encountered in application will generate an alarm condi-
tripping and alarming is 48.0 to 52.0 Hz for a 50 Hz tion. Phase Rotation Alarm can then be mapped to this
System and 58.0 to 62.0 Hz for a 60 Hz System. Relay A. With this contact an interposing relay with time
delay can be employed to provide time delay and contact
Table 4.1 includes two examples of the circuit breaker and arrangements to interface with the circuit breaker’s closing
Relay A operation. circuit (spring release coil) to either prevent closing or to
open the circuit breaker (Shunt Trip coil). Relay B and
Relay C can also be mapped to the Voltage or Frequency
Voltage Unbalance is adjustable from 5 to 50% in steps of
TRIP. These include UnderVoltage, OverVoltage,
1%. A difference between Max Phase and Min Phase
UnderFrequency, OverFrequency and Voltage Unbalance
higher than the Voltage Unbalance setting, times Min
Trip and Reverse Power Trip. In addition Relay B and
Phase Voltage, will activate the function.
Relay C together will share a Manual or Auto Reset
selection. This is provided in the SYSTEM menu and will
4.2.2.4 Voltage, Frequency Relays A,B,C provide means to reset the Relay B and Relay C associ-
ated contacts. The default setting is MANUAL reset. The
Relay A, a normally open contact, can be mapped to an resetting of these is accomplished via the Reset
Alarm condition, which can provide a real time contact pushbutton. The AUTO Reset setting will automatically
information of these parameters: UnderVoltage, reset these two relays within five seconds after the trip
OverVoltage, UnderFrequency, OverFrequency and Voltage event.
Unbalance. Each alarm setting does have a separate time
delay adjustment. The Phase Rotation setting should be programmed in the
Alarm menu to alarm when the Digitrip encounters this
The Phase Rotation Alarm can be set to ABC or CBA or Phase Rotation setting.
OFF in the Alarm menu. (See Appendix D-16) This setting

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Page 28 I.L. 70C1036H05

4.2.3 INCOM The Digitrip 1150 will light the red LED shown in Figure 1.1
when transmitting on INCOM.
INCOM programming (See Appendix D-11) allows for five
different setting options. These include address (001 – Recommended cable specifications:
FFE in hexadecimal form), baud rate (9600 or 1200), and
enabling or disabling external communications trip (EXT
COMM OpenTrip) and external communications close • Cutler-Hammer Inc. cable catalog #IMPCABLE,
(EXT COMM CLOSE). The latter two settings will allow or Style #2A95705G01
disallow remote control of the circuit breaker via the • Belden 9463 cable family
computer. • Identical Commscope or Quabbin cables

The fifth setting is the DT 910 COMM mode. When These bursts of data can be captured and used in a variety
enabled, the trip unit will adopt the Digitrip 910 communi- of ways depending upon the manner in which the master
cations protocol. This means that while the trip unit computer software program is written. For example, all the
continues to execute all Digitrip 1150 functionality, the unit settings (protection and alarm) can be programmed and
only transmits those messages pertaining to the Digitrip viewed via the master computer. Another example is that
910 and will be identified as a 910 unit to a communicating the data for the individual phase current values are avail-
master device. able on the network, but the software must select the
appropriate data, decode it and display it in a useful
manner. Following an over-current trip operation, the
4.2.3.1 Assemblies Electronic Monitor (AEM II) and Breaker sequence of coded data varies slightly. The cause of trip
Interface Monitor (BIM) and BIM II and the value and phase (or ground) current responsible for
the trip are available on the network.
An Assemblies Electronic Monitor (AEM II) can be applied
in the same assembly with the circuit breakers or at a 4.2.4 Aux ReLaY
location remote from the circuit breakers to monitor the
information from any of the Digitrip 1150 Trip Units. The The programmable Auxiliary Relays in the Digitrip 1150
connections in the network are made by twisted pairs of consist of Relay A (Alarming and Tripping), Relay B (Block
wires. The AEM must use the Digitrip 910 communication Close function), and Relay C (Latch relay). If at least one
setting. Its valid addresses are 001 through 050 decimal. relay function is enabled, an asterisk will appear beside
the relay letter in the menu. More than one relay function
The Breaker Interface Monitor (BIM) can also be used to can be assigned to a physical relay except for the pulse
monitor the Digitrip 1150 trip unit. However, with BIM must initiator selection. The selection of Relay A, B or C results
also use “Digitrip 910” setting of the Digitrip 1150 product. in further selection of three “groups” of settings. Relay A,
when selected, gives the option to enable or disable the
The above two devices mentioned can receive minimum pulse initiator and enable kVAh or kWh settings. When
communication from the Digitrip 1150 when set in the DT PULSE INITIATE is ENABLED, all groups for Relay A are
910 mode and is not recommended for new installations. skipped. When DISABLED, Groups 1, 2 may be pro-
The BIM II is the preferred monitoring device to be used grammed and saved for Relay A. Relays B and C do not
with the Digitrip 1150. Its range of acceptable addresses have a PULSE INITIATE option and are only programmable
are 001 through 032 hexadecimal. for Groups 1 and 3. (See Appendix D-15 and Appendix G.)

4.2.3.2 Remote Master Computer and BIM II 4.2.5 ALARMS

Alarm programming functions the same way as other

When desired, Digitrip 1150 Trip Units can communicate options. Many alarm settings exist. A listing of these
with both an Breaker Interface Monitor (BIM II) and a options and their settings can be found in Appendix D-16.
remote master computer (IBM PC compatible with Cutler
Hammer Inc. CONI card or MINT). (See Figure 4.8)
The selection of ALARM TO EventLOG setting will enable
both alarm events as well as trip events to be time-
4.2.3.3 INCOM Network Interconnections stamped and placed in the three-position EventLOG.

INCOM sends bursts of data on a 92 to 115.2 kHz carrier 4.2.6 Digital Relay Accessory Module
at rates up to 9600 baud over twisted pair conductors to
interconnect the many devices comprising the network. A Digital Relay Accessory Module is a separate device
that is programmed via the Digitrip 1150 via ACCBUS
menu. Available module addresses are 1 through 4. Each

Effective 10/2004
I.L. 70C1036H05 Page 29

Typical IBM
Compatible
Computer

Breaker
Interface
Monitor
(BIM ΙΙ)

2 4 See View A
Twisted Pair.
3 No. 18 AWG.

Cut-off Shield or connect to

unused customer
terminal -- Do not Ground.
Typical Magnum
Circuit Breaker 1
with Digitrip Trip Unit 1

Baud Rate
1200 or 9600
(Y)

001 002
(BL)
3 Digit
INCOM
View A Address

NOTICE

100 OHM 1/2W terminating

resistor required on network
1 Refer to Master Circuit Breaker Connection Diagrams in Appendix C. even if network is unused
2 Modular telephone connector, Type RJ11, supplied by user.

3 Ground shielding at computer BIM ΙΙ as shown. Where devices

are daisy-chained, interconnect shielding, but do not ground the connection.

100 ohm ½ watt carbon resistor required at last breaker. See T.D. 17-513.
Also insert 100 ohm resistor to terminator at CONI card (via switch on CONI).

See Appendix D-11 for programming INCOM function.

AEM ΙΙ is compatible with Digitrip 1150 with AEM ΙΙ firmware version 7.1and the
Digitrip 1150 set in the DT 910 COMM mode. (See page D-11)

Breaker Interface Module (BIM ΙΙ) Version 3.12 is compatible with Digitrip 1150
Cat # 11****. BIM ΙΙ version 3.20 or greater is compatible with Digitrip 1150
Cat # 11**** and Cat # 11P****.

Figure 4.8 INCOM Network with Remote Master Computer BIM II

module has four form C relay contacts numbered 1 through the Digital Relay in the same way as the assignments of
4. Programmable relay functions (RLY FUNC) for each Relay A. The one exception is the Accessory Bus relay
relay include AUX, ALRM, BELL, DEAD, WATCH, LDT, will not function as a Pulse Initiator. The WATCH (watch-
SDT, INST, GND,HLAlm,GFAlm and OFF. (See Appendix F dog) function, when programmed, can provide a status
for definitions of these settings.) These options may be monitor of the Digitrip 1150 energizing the programmed
saved for any combination of relay functions and ad- relay and will drop out if an abnormal condition exists
dresses. The Digitrip 1150 acts as a master to its Acces- within the Digitrip or if auxiliary power is low voltage. The
sory Bus network and will light a green LED located in the DEAD (deadman) function, when programmed, will pick up
upper right corner of the trip unit when transmitting (See the relay if the Module is communicating properly with the
Figure 1.1 and also Appendix H). Digitrip 1150. It will drop out if the Module is not communi-
cating properly. This function should be assigned to the
The AUX function can be used as a circuit breaker auxiliary last physical Module in a wiring lineup to verify the
switch in application. BELL will initiate on any “protection” integrity of the wiring.
trip and can be used as a circuit breaker bell alarm trip
function. The INST function will drive the Accessory Relay Accessory Bus is not available on PROTECT firmware
when an instantaneous trip is encountered. Similarly LDT version 8A.00. The settings of INST, SDT, LDT, GNDT
function will drive the relay on a circuit breaker Long Time GFAlm and HLAlm will require PROTECT firmware version
trip and SDT for a Short Time trip. The GFT (Ground Fault) 8A.05 or higher. Settings OV/UV, OF/UF, RevPwr will
will operate the Accessory Relay on a ground trip. High require versions PROTECT 8A.09 and DISPLAY 8B.09 or
Load alarm will activate with the HLAlm setting. GFAlm is greater.
for a Ground Fault Alarm function. ALRM (alarm) will drive

Effective 10/2004
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Figure 4.9 TripLink Transfer

4.2.7 TripLink

TripLink is a means of transferring settings from one circuit

NOTE: A TripLink cable when installed will disconnect that
breaker to another. TripLink transfers all protection settings
unit from the INCOM communication network.
and time and date, and the circuit breaker’s circuit data.
The transfer of these settings may be useful for cloning a
lineup of circuit breakers, cloning a circuit breaker’s 4.2.7.1 Preliminary Requirements
settings for replacing the circuit breaker with its clone for
maintenance purposes, or for making common settings for 1. Both units must be Digitrip 1150 and both must have
a test program. the same Catalog (cat.) number, plug ampere rating for a
successful transfer.
All INCOM settings including INCOM ADDRESS is
transferred via TripLink. An INCOM network does require a NOTE: It is recommended that both the sending and
unique address so the address may later have to be receiving units be the same firmware revision. Three cases
changed. exist:

The procedure requires a TripLink cable to provide commu- a. Units with revision 0 are only compatible with other
nication between circuit breakers. The connector with the revision 0 units.
labeled end must be plugged into the circuit breaker that
will receive the settings. This cable must be plugged into b. Units with revision 9 are only compatible with other
the Test Kit pins on the lower left-hand corner on both revision 9 units.
circuit breakers and both units must be powered up for the
setting transfer to be successful. If power is not available, c. When transferring settings having different firmware
then use separate Auxiliary Power Module Cat. No. revisions will transfer all the protection settings properly.
#PRTAAPM and energize the unit by plugging keyed However, the Accessory Bus settings should be verified.
connector into upper right corner of the Digitrip 1150 (See
Figures: 1.1 and 4.9).

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I.L. 70C1036H05 Page 31

2. To send settings, the receiving circuit breaker must be perameters can be set to on or off, depending on user
in open state and without line voltage on the circuit preference. Any settings turned to OFF will not be dis-
breaker’s main terminals. played when METER is selected from the Main Menu
(Refer to Appendix D-14).
4.2.7.2 Transfer Procedure
4.2.10 System Settings
NOTE: It is important to realize that the transfer must be
performed from the RECEIVING circuit breaker. (The circuit 4.2.10.1 Frequency
breaker with the white connector marked “This unit to This setting is to reflect the power system’s operating
receive setpoints”). frequency of 50 or 60 Hertz. The factory default is 60Hz.

In the Program TripLink menu, if all preliminary require- 4.2.10.2 BC Relay Reset
ments are met, the Digitrip 1150 display on the receiving
circuit breaker will read “THIS UNIT TO RECEIVE.” Other- This setting is to define the reset mode of Relay B and
wise, an error message will appear reading “TripLink Relay C of the Digitrip’s Power Relay Module. The selec-
CONFIG ERROR” and the display will return to Program tions are AUTO or MANUAL reset (See Section 4.2.2.4).
Settings menu.
4.2.10.3 Sliding Demand
If the circuit breakers meet the preliminary requirements,
the user will be prompted to “PRESS SAVE TO LEARN.” A sliding demand calculation can be chosen for either the
When Save is pressed, settings will transfer and a “LOAD- Max kW demand or the Max kVA demand. If neither is
ING” message will appear on the display screen. Transfer required, the user can choose “OFF” by pressing the up/
will be confirmed if successful with a “TripLink TRANSFER down Edit Value keys.
COMPLETE” message. Otherwise, “TripLink TRANSFER
ERROR” will appear on the display. 4.2.10.4 Waveform Capture

In the event of TripLink Configuration Error, check all The waveform capture function can be enabled on a 1, 5, or
preliminary requirements as well as the TripLink cable 10 minute basis. It can also be disabled by selecting
connections. Also ensure that transfer is being initiated “OFF” with the Edit Value keys. If the THD alarm setting
and performed on the receiving circuit breaker. has been enabled in the Alarms menu, the waveform
capture function will automatically be set to 1 minute and
4.2.8 Setting TIME the waveform capture OFF setting will not be available.

In the Digitrip 1150, dates are displayed in DD-MmmYY 4.3 View Settings (VIEW SET)
format (for example, 12 Mar 98) and time is displayed in
military-style format with hours from 0 to 23. The first The VIEW SET menu will allow the user to view all of the
screen in PGM SET\TIME is a view-only screen showing settings presented in the PGM SET menus with the
the current time setting for the unit. The View Down button exception of the TripLink function. The user cannot edit or
changes screens to the DAY programming screen where change settings in these menus.
the two digit date can be adjusted with the Edit Up or Edit
Down pushbuttons. View Down then moves through the 4.3.1 Firmware Menu
programmable three-character MONTH abbreviation, two
digit YEAR selection, two digit HOURS, and two digit The Firmware menu enables the user to view the version
MINUTES which are all programmed with the Edit Up and/ and revision of the trip unit firmware. The protection
or Edit Down pushbuttons. Seconds are not programmable firmware is displayed as PROTECT while DISPLAY
and begin at 00 when time settings are saved. Using View firmware can be viewed by pressing the up/down View
Up in the menu will move the user through the settings in function keys.
reverse order as described above (Refer to Appendix D-18).
4.4 Meter Menu
4.2.9 Selecting DISPLAYS
The METER menu initially will show six screens of data via
Display programming options control the screens dis- the factory display setup. They are phase current, neutral
played in the Meter Menu. Program Display is located in and ground currents (if supplied), phase voltages, forward
the PGM SET\DISPLAY submenu. This submenu lists power, power factor and frequency, and energy values.
twenty-two programmable screens. The first screen sets However, the program DISPLAY menu can be used to
metering for A, B, and C phase currents to AUTO or present metered data relevant to a specific customer
MANUAL. The remaining twenty-one screens of various application. There are 22 data screens selectable as listed

Effective 10/2004
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in Appendix D-14 and D-3. and alarm events the per harmonic analysis is not pro-
vided. PowerNet software screens are available to show
waveform capture oscillographs of each phase as well as
The Demand and the average, minimum and maximum bar graphs of the magnitudes and individual harmonics that
current screens alternate between the data and additional make up the three-phase currents (See Section 4.9).
information concerning the measured parameter. The min
and max phase currents are actually reset as a group (See
Appendix D-3). The OP COUNT screen displays circuit If less than 15% of the rated current is applied to the
breaker operation where a open/close is registered as one circuit breaker, the trip unit will display three dashed lines
count. The OP COUNT can be reset also when this screen (‘- - -’) for the THD and Crest Factor values since these
is active. cannot accurately be measured.

4.5 Harmonic Menu 4.6 Event Log

The Digitrip 1150 HARMONIC Menu provides capabilities to The Digitrip 1150 trip unit has the ability to record the
calculate and display the Total Harmonic Distortion (THD) cause, timestamp and associated current or related data
for phase currents IA, IB and IC as well as IN if available. for a maximum of three events. An event is defined as an
The term THD is used to define the amount of harmonic alarm or trip condition experienced by the circuit breaker.
current that the breaker is seeing or the system is experi- The user has the option to record only trip function events
encing in percentage of the power frequency current. This or to record both trip and alarm functions by manipulating
can be useful in troubleshooting to detect individual circuit the Alarm to EventLOG setpoint located in the Alarms
breaker current loads that could lead to system problems programming menu. The event data is stored in nonvolatile
and early equipment failure. The equation used for calculat- RAM and is maintained on a first-in, first-out basis. In the
ing THD is: case where the Alarm to EventLOG setting is enabled, a
new alarm event will replace either historic trip or historic
alarm condition stored previously (See Appendix D-3).

4.7 Power and Energy Parameters

Power has approximately a one second update rate and is
shown as Forward or Reverse Power in kW units. The
parameters kVA and kvar are also updated in a similar time
Where Irms is the rms current of the waveform and I1 is period. Demand kW is presented as Forward or Reverse in
the rms current of the fundamental frequency. kW units and is based on the last average five minute
interval. Demand kVA is also based on the last average five
minute interval. These parameters can be reset when this
For example, the THD calculation for a load having an
screen is in view and the Reset pushbutton action will start
equal rms value of the fundamental and third harmonic
a new five minute period. Programming Alarms (kW or
current would have a THD value of 100 percent. This would
kVA) to exceed a threshold value will produce an Alarm. A
be a large value of THD and would not be typical.
timestamp is also provided if the Alarm to EventLOG
setting is enabled.
In addition to individually displaying the THD for the phase
currents, the Digitrip 1150 will also display the individual
Demand Max kW and Demand Max kVA are peak values
harmonic currents up through the 27th harmonic.
that have been encountered since the last Reset of these
parameters. A pushbutton Reset or INCOM Reset will start
Local operation on the Digitrip to observe this data is done a new fifteen minute interval. As a factory default, both kW
using the View Down pushbutton of the Digitrip. and kVA demands are set for a “fixed” fifteen minute
window. The update rate for the calculation is fifteen
By selecting “HARMONIC” from the Main Menu, a wave- minutes. A “Sliding” window calculation is a possible
form capture event and harmonic data calculation is setting which will calculate a continuous new Demand
accomplished locally. A second way is to automatically value and update the value if a new Max is encountered
generate waveform capture on a 1 minute, 5 minute, 10 every minute. This SLIDING DEMAND setting is the first
minute, or OFF basis by selecting “GENERAL” in the item in the SYSTEM (or GENERAL) screen.
Program Settings submenu and scrolling to the “WAVE-
FORM CAPTURE” option. The third way is to remotely The Digitrip 1150 will display locally in kWh units of both
trigger the waveform capture via a PowerNet communica- Forward and Reverse Energy values. An additional energy
tion command. For these three types of captures the parameter is kVAh. The rollover energy value is 9,999,999
Digitrip 1150 will provide per harmonic data. For trip events for both.

Effective 10/2004
I.L. 70C1036H05 Page 33

The Auxiliary ReLaY A can be assigned to a Pulse Initiator source ground configuration). A total of 58 data points per
function for either kVAh or kWh. When this feature is phase per cycle is captured and can be sent to a host
selected, ReLaY A will be dedicated for Pulse Initiator and computer. From this data, parameters such as [THD],
no other relay function is possible for ReLaY A (See individual harmonics content and waveform are fabricated.
Appendix D-15). The Pulse Initiator provides a contact
change of state to an external counter device whenever a There is a timer in the Digitrip unit that will limit the
value is exceeded. This pulse value is based on an ANSI acceptance of a “WAVEFORM CAPTURE” software
document and is expressed as the general equation: command to once per second. Three waveforms are held in
a first in, first out manner in the Digitrip’s volatile memory.
Pulse Value (kVA or kW) = .000717 x In (plug amperes)
4.9.1 Six Cycle Waveform Capture on Trip
4.8 Power Quality On Long Time, Short Time, Instantaneous or Ground Fault
tripping events, the Digitrip 1150 will capture the curve
The Digitrip 1150 in a Magnum Circuit Breaker can mea-
waveforms to a buffer. The buffer as a waveform can be
sure a variety of parameters relating to today’s modern
displayed on the master computer using the PowerNet
Power System. This data can be viewed locally or via a
software screen (Ref. I.L.17384 for protocol and software
computer remotely in which case the data can be logged.
commands). The six cycle waveform capture will typically
contain one cycle of pre-interruption data and five cycles of
4.8.1 Power Factor, THD and Crest Factor (CF) interruption and post-interruption data for analysis of the
power system.
The System Power Factor is a real time measurement with
approximately a one second update rate. The tolerance is
the value ± 0.02. Max PF and Min PF values are historic NOTE: The phase loss, phase unbalance, voltage and
values that are held until Reset. frequency trips, reverse power trips and alarm events do
not produce a waveform capture.
Total Harmonic Distortion (THD) of each phase and neutral
(if valid) and corresponding per harmonic data up to the NOTE: PowerNet communications will require hardware
27th harmonic and Crest Factor are available via a wave- and software specified in the Cutler-Hammer PowerNet
form capture trigger. This waveform capture trigger can be Operations Manual and also the Digitrip 1150 Firmware
done locally by selecting HARMONIC in the Main Menu or must be DISPLAY VERsion 8B, REVision 02 or greater
by exceeding a THD alarm threshold programmed by the and PROTECT VERsion 8A, REVision 02 or greater (See
user. See section 4.8.2. Appendix Page D-5).

4.8.2 Alarms 4.9.2 One Cycle Waveform Capture

Alarming on low power factor can be accomplished by There are two methods of obtaining a one cycle waveform
enabling this function in the ALARM programming screen. capture from the Digitrip 1150. One method is via the
Any System Power Factor seen by the Digitrip 1150 less PowerNet software to manually request a waveform
than the level programmed will initiate an alarm message capture. The second way is to trigger a waveform capture
on the twenty four character display as well as illuminating via an Alarm condition. This is accomplished by entering
the yellow LED and communicating to a host computer. the PROGRAM - ALARM screen. Enable the ALARM type
The powerfactor calculation is valid for currents less than of interest as well as ALARM TO EventLOG.
the Long Delay Pickup level. The Auxiliary Relay A can be
also assigned to the THD alarm. The one cycle waveform capture of the currents IA, IB, IC
and IN, if applicable, can then be displayed on the master
The THD alarm feature is an alarm setting with a range of computer for analysis. IG waveform is not displayed for
10% to 30% THD that when exceeded will initiate wave- residual ground application (See Appendix D-16).
form capture and also set the front panel alarm LED. The
THD alarm has a 1 minute update rate. The Auxiliary Relay 4.10 Health (applicable only to Digitrip 1150+ Rev. E
A can also be assigned to a THD alarm. or higher)

The HEALTH menu on the Digitrip 1150 front panel will

4.9 Waveform Capture Feature
provide information on the Magnum Circuit Breaker’s
The Digitrip 1150 can respond to a command from a Health as well as a history of the circuit breaker and circuit
remote master to perform a waveform capture of phase it is protecting. This data is useful for planning mainte-
currents IA, IB and IC, as well as waveform IN (on catalog nance and inspection schedules.
LSI ) or waveform IG (on catalog LSIG employing the

Effective 10/2004
Page 34 I.L. 70C1036H05

The type of data includes the total number of all Instanta-

neous and Short Delay trips seen by the circuit breaker. CAUTION
A second counter shows the number of Overloads (LDT) TESTING A CIRCUIT BREAKER WHILE IT IS IN-SER-
and Ground Faults (GFT) encountered while in service. The VICE AND CARRYING LOAD CURRENT IS NOT RECOM-
OP count provides data on the number of Close Operations MENDED.
experienced by the circuit breaker. The internal TEST
function will not increment the INST/SD or the LDT/GFT
counters, however, there will be count values in these TESTING OF A CIRCUIT BREAKER THAT RESULTS IN
registers from the factory primary injection testing. Each of THE TRIPPING OF THE CIRCUIT BREAKER SHOULD
these three values can be zeroed by depressing the Reset BE DONE ONLY WITH THE CIRCUIT BREAKER IN THE
pushbutton. These counters will roll over at a value of 255. TEST OR DISCONNECTED CELL POSITIONS OR
WHILE THE CIRCUIT BREAKER IS ON A TEST BENCH.
The last time the circuit breaker was operated (open or
closed or tripped) is viewable with time and date displayed. 5.2 When to Test
Also included is the maximum temperature in degrees
Centigrade as seen by the Digitrip microprocessor CHip. Testing prior to start-up can best be accomplished with the
(For Screen Presentations See Appendix D-24) circuit breaker out of its cell or in the Test, Disconnected,
or Withdrawn (or Removed) cell positions.
The capture of the data requires external Trip Unit power.
This data, once captured, is stored in non volatile memory. NOTE: Since time-current settings are based on desired
system coordination and protection schemes, the protec-
tion settings selected and preset in accordance with
These features are available to PowerNet communications Section 4 should be reset to their as-found conditions if
utilizing Digitrip firmware Rev. F or higher. altered during any routine test sequence.

NOTE: Rev. F firmware permits maximum temperature to Enter the Test menu and using the Edit Up/Down
be reset. pushbuttons, set the desired test current level. A test level
chosen above a setting will cause a pickup/trip condition. If
a pickup is not exceeded, the unit will remain in a “testing”
5.0 TEST PROCEDURES mode for three hours or until interrupted by a real event or
user pushbutton activity. (See Appendix D-20 for
pushbutton sequence to conduct the testing. Press Save
twice to initiate the test.) To conduct this testing as well as
5.1 General viewing setting (if applicable), a small Auxiliary Power
Module, Cat. No. #PRTAAPM, is available for these
functions. This Module is an intermittent duty device that is
WARNING powered via 120 VAC, 50/60 Hertz and will plug into the
upper right corner of the product (See Figure 1.1).
DO NOT ATTEMPT TO INSTALL, TEST, OR PERFORM
MAINTENANCE ON EQUIPMENT WHILE IT IS ENER- When performing a trip unit self test in TRIP mode,
GIZED. DEATH OR SEVERE PERSONAL INJURY tripping of the circuit breaker and activation of the
CANRESULT FROM CONTACT WITH ENERGIZED associated Alarm or Accessory Bus relays can occur. This
EQUIPMENT. is important to consider before initiating a test, since a
circuit breaker or relay action can initiate other equipment
DE-ENERGIZE THE CIRCUIT AND DISCONNECT THE responses in the system even if the circuit breaker is in
CIRCUIT BREAKER BEFORE PERFORMING MAINTE- test position of a switchgear cell. The one exception to this
NANCE OR TESTS. is the Ground Trip self test function of the LSIA style unit.
A Ground TRIP test will not actually trip the circuit breaker
but will only provide alarm display information and alarm
relay operation (if enabled).
WARNING
In the NON-TRIP mode of self test, the circuit breaker trip
ANY TRIPPING OPERATION WILL CAUSE DISRUPTION function and any associated relay will not operate when
OF SERVICE AND POSSIBLE PERSONAL INJURY, test alarm or test trips occur. The front panel indicating
RESULTING IN THE UNNECESSARY SWITCHING OF LED will light as well as display alarm/trip cause and trip
CONNECTED EQUIPMENT. time information.

Effective 10/2004
I.L. 70C1036H05 Page 35

5.2.1 Self Testing testing can determine the accuracy of the desired trip
settings by performing Long Delay, Short Delay, and
Prior to any self testing, the plexiglass cover will need to Ground Fault functional tests. The Cutler-Hammer-ap-
be removed. The Digitrip 1150 provides means via the proved test kit is listed below.
TEST selection in the main menu to conduct Phase
Current (PH) or Ground Current (GND) (if applicable) type
testing in either a TRIP or NON-TRIP mode. Model Test Kit
Digitrip 1150 Test Kit (140D481G02R, 140D481G02RR,
The Self Test function cannot be entered if an alarm is 140D481G03, or G04) with Test Kit
Adapter 8779C02G04
already present. This alarm will need to be cleared before
any self testing can be conducted. The self test function
will terminate if any of the following conditions occur after
the start of testing: The test port is located on the front left-hand corner of the
DT1150 units (See Figure 1.1). To access the port, remove
1. Any real Phase current exceeds an alarm setting the plexiglass cover from the front of the circuit breaker.
2. Any real Ground current exceeds 0.1 per unit. Using a small screwdriver, gently pry up on the test port
3. If real Phase current exceeds 1 x (Ir) while cover to remove this item.
conducting a NON-TRIP test.
4. If real Phase current exceeds 0.5 x (Ir) while The test kit authorized by Cutler-Hammer for use with the
conducting a TRIP test. Digitrip units plugs into the test port of the unit and
provides a secondary injection test that simulates currents
from the current transformers. Existing test kits, styles
140D481G02R, 140D481G02RR, 140D481G03 or G04,
5.2.2 Functional Field Testing along with the Magnum Test Kit Adapter 8779C02G04, can
be used to test the trip unit and circuit breaker.

CAUTION 5.3 Performance Testing for Ground Fault Trip Units

5.3.1 Code Requirements

PERFORMING TESTS WITHOUT THE CUTLER-HAM-
MER APPROVED TEST KIT MAY DAMAGE THE DIG- The NEC, under Article 230-95-C, requires that any ground
ITRIP UNIT. fault protection system be performance tested when first
installed. Conduct tests in accordance with the approved
Use the test receptacle to verify a functional load test of a instructions provided with the equipment. Make a written
major portion of the electronic circuitry of the Digitrip and record of this test and make the results available to the
the mechanical trip assembly of the circuit breaker. The authority having inspection jurisdiction.

Figure 5.1 Auxiliary Power Module - (Front and Back Views)

Effective 10/2004
Page 36 I.L. 70C1036H05

5.3.2 Standard Requirements

Apply the same current as described above through one
phase of the circuit breaker, returning through the neutral
As a follow-up to the basic performance requirements sensor. The circuit breaker should not trip, and the alarm
stipulated by the NEC, UL Standard No. 1053 requires that indicator should not operate. Repeat the test on the other
certain minimum instructions must accompany each two phases.
ground fault protection system. These statements (Section
5.4.3), plus a copy of the record forms (Figures 8.1, 8.2, Suitable
Primary
Disconnect
and 8.3), are included as part of this Instructional Leaflet. Conductors Stabs
A B C When Drawout

5.3.3 General Test Instructions

Polarity &
Identification
The interconnected system must be evaluated only by
qualified personnel and in accordance with the equipment Low-Voltage
assembler’s detailed instructions. AC Current
Source

To avoid improper operations following apparently correct

simulated test operations, the polarity of the neutral sensor
connections (if used) must agree with the equipment
assembler’s detailed instructions. Where a question Figure 5.2 Connection Details for Conducting Single
exists, consult the specifying engineer and/or equipment Pole,Single Phase Current Tests with the
assembler. Circuit Breaker Removed from the Cell

To avoid improper operations following apparently correct Apply the same current as described above through any
simulated test operations, the polarity of the neutral sensor two phases of the circuit breaker. The circuit breaker
connections (if used) must agree with the equipment should not trip. Repeat the test using the other two
assembler’s detailed instructions. Where a question combinations of circuit breaker phases (See Figure 5.3).
exists, consult the specifying engineer and/or equipment
assembler.
Primary
Suitable Disconnect
WARNING Conductors
A B C
Stabs-
When Drawout

PERSONAL INJURY CAN OCCUR WHEN WORKING ON

POWER SYSTEMS. ALWAYS TURN OFF POWER Polarity &
SUPPLYING CIRCUIT BREAKER BEFORE CONDUCT- Identification

ING TESTS. TEST OUT OF THE CELL, IF POSSIBLE. Low-Voltage

AC Current
THERE IS A HAZARD OF ELECTRICAL SHOCK OR Source
BURN WHENEVER WORKING IN OR AROUND ELEC-
TRICAL EQUIPMENT.
Shorting
Conductors
Verify the grounding points of the system using high-
voltage testers and resistance bridges to ensure that
ground paths do not exist that could bypass the sensors. Figure 5.3 Connection Details for Conducting Single
Phase Current Tests with the Circuit Breaker Removed
from the Cell
Use a low-voltage (0 to 24 volt), high-current, AC source to
apply a test current of 125 percent of the Digitrip unit
ground pick-up setting through one phase of the circuit An alternative test setup is shown in Fig. 5.4. This three
breaker. This should cause the circuit breaker to trip in pole hookup should be employed when a low Ground
less than 1 second and operate the alarm indicator. Reset Pickup setting is to be tested like 0.24x and 0.3x and
the Digitrip and then reclose the circuit breaker. Repeat the without Aux power present. The Test Circuit does provide a
test on the other two phases (See Figure 5.2). net residual ground current excitation of “1”. Two of the
phases cancel each other out as far as ground fault but
now the Digitrip is provided with three pole power up
current simulating three phase power.

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I.L. 70C1036H05 Page 37

6.2 Battery Test

Primary

Suitable
Disconnect
Stabs - When
The battery is a long-life, lithium, camera-type unit. Check
Conductors
A B C
Drawout the status of the battery at any time by pressing the
Battery Test pushbutton and observing the green LED. If
the Battery Test LED does not light green, replace the
Polarity &
Identification
battery. The condition of the battery has no effect on the
Low-Voltage
AC Current protection function of the trip unit. Even with the battery
Source removed, the unit will still trip the circuit breaker in accor-
dance with its settings. However, without the battery, the
Cause of Trip LED will not be lighted red if auxiliary power
is lost to the Digitrip. If the battery is replaced, one or more
of the Cause of Trip LEDs may be illuminated. Push the
red Reset/Battery Test button to turn off the indicators; the
Figure 5.4 Alternate Connection Details using three poles trip unit will be ready to indicate the next cause of trip.
to develop a Ground Fault Condition
6.3 Battery Installation and Removal
The 3-volt lithium cell battery (See Figure 6.1) is easily
removed and replaced. The battery is located in the cavity
adjacent to the rating plug mounting screw, but is not part
of the rating plug. Insert a small screwdriver at the left side
CAUTION of the rating plug, and to the left of the word OPEN, to
open the rating plug door. Remove the old battery by
RESTORE ALL TEMPORARY CONNECTIONS MADE pulling up on the removal tab that wraps under the battery
FOR THE PURPOSE OF CONDUCTING TESTS TO cell. When inserting the new cell, pay special attention to
PROPER OPERATING CONDITIONS BEFORE RETURN- ensure that the proper polarity is observed. The main body
ING THE CIRCUIT BREAKER TO SERVICE. of the battery is the positive (+) side.

Record the test results on the test form provided with the
equipment (See Figure 8.3).
Insulating Tab Rating Plug door flipped open

6.0 BATTERY
USE TYPE
1/3 N LITHIUM
6.1 General BATTERY ONLY

The battery plays no part in the protection function of the Pull to Remove Battery
trip unit.
Figure 6.1 Digitrip Battery
As indicated in Figure 3.1, the battery is provided to flash
and power the red LED indication on the mimic curve. The
battery is located under the rating plug door. A battery test NOTE: The battery can be replaced at any time, even
pushbutton and a green Battery Test LED are also pro- while the circuit breaker is in-service, without affecting the
vided. operation of the circuit breaker or its protection functions.

A second function of the battery is to provide backup power

for the clock chip in the unit. The clock is used to CAUTION
timestamp trip and alarm events.

On initial installation of the circuit breaker, pull out the EXERCISE CARE WHEN REPLACING THE BATTERY TO
insulating tab with a quick pull (See Figure 6.1). This will ENSURE THAT THE CORRECT POLARITIES ARE
activate the battery. Check the battery status using the OBSERVED. POLARITY MARKINGS ARE SHOWN ON
Battery Test pushbutton. THE RATING PLUG WHEN THE HINGED COVER IS

Effective 10/2004
Page 38 I.L. 70C1036H05

OPEN. ACCIDENTALLY INSTALLING THE BATTERY IN 1. The Instantaneous and Ground Current Settings (if
THE REVERSE DIRECTION WILL NOT HARM EITHER provided) are multiples of (In) (See Sections 4.2.1.6
THE TRIP UNIT OR THE BATTERY, BUT WILL DEFEAT and 4.2.1.7).
THE FUNCTION OF THE BATTERY.
2. The Long Delay Current Setting, (Ir), is a fractional
The replacement battery should be the same type as that multiple of (In): Long Delay Current Setting = (Ir) = LD
already in the trip unit or an equivalent. Acceptable 3.0 volt x (In) (See Section 4.2.1.2).
lithium batteries may be obtained from the following
companies: 3. The Short Delay Current Setting is a multiple of (Ir):
Short Delay Current Setting = SD x (Ir) = SD x [LD x
(In)] (See Section 4.2.1.4).
Company Model
VARTA Batteries, Inc. CR 1/3N
300 Elmsford Boulevard
Elmsford, N.Y. 10523 USA
1-914-592-2500
(www.varta.com) CAUTION

Duracell, Inc. DL 1/3N BEFORE YOU FIT THE RATING PLUG INTO THE TRIP
Berkshire Corporate Park UNIT, BE SURE TO CHECK THAT THE SENSOR RATING
Bethel, CT 06801 USA MATCHES THAT PRINTED ON THE RATING PLUG
1-800-551-2355 DOOR. INSTALLING A RATING PLUG THAT DOES NOT
(www.duracell.com) MATCH THE SENSOR RATING CAN PRODUCE SERI-
OUS MISCOORDINATION AND/OR FAILURE OF THE
Sanyo Energy Corporation CR 1/3N PROTECTION SYSTEM.
2055 Sanyo Avenue
San Ysidro, CA 92173 USA NOTE: Rating plugs from Digitrip models 210, 500, or 510
1-619-661-6620 CANNOT be used with Digitrip 1150 Units.
(www.sanyo.com)

7.0 FRAME RATINGS

(SENSOR RATINGS AND RATING PLUGS) 8.0 RECORD KEEPING

The frame rating of a circuit breaker is the maximum RMS Use the forms shown in Figures 8.1 and 8.2 for record
current it can continuously carry. The maximum short- keeping. Fill in these forms, giving the indicated reference
circuit current rating of the circuit breaker is usually related information and initial time-current trip function settings. If
to the frame rating as well. desired, make a copy of the form and attach it to the
interior of the circuit breaker cell door or another visible
A current value, (In), that is less than the full frame rating location. Figure 8.3 provides a place for recording test data
may be chosen to be the basis for the coordination of the and actual trip values.
protection function of the circuit breaker without affecting
its short-circuit current capability. For the Digitrip 1150, Ideally, sheets of this type should be used and maintained
this is implemented by changing the current sensors and by those personnel in the user’s organization that have the
the corresponding rating plug. These sensors and rating responsibility for protection equipment.
plugs are available in kit form.

The current sensor rating is the maximum current the

circuit breaker can carry with the specified current sensors
installed. The sensor rating can be the same or less than
the frame rating, but not greater.

This value, (In), is the basis for the trip unit current set-
tings:

Effective 10/2004
I.L. 70C1036H05 Page 39

9.0 REFERENCES

9.1 Magnum and Magnum DS Circuit Breakers

I.B. 2C12060 Magnum DS Circuit Breaker Instructions

I.B. 2C13060 Magnum I. Circuit Breaker Instructions

4A36346 Zone Interlocking Application with Non-

Magnum Circuit Breakers

I.L 70C1143 Installation Instructions for Digital Relay

Accessory Module

I.L. 70C1155 Instruction for TripLink Cable Accessory

for Magnum and Magnum DS

I.L. 66A7508 Instructions for mMint Modbus Translator

Module

9.2 Time-Current Curves

The Time-Current Curves are listed below for particular trip

unit models. All protection function time-current settings
should be made following the recommendations of the
specifying engineer in charge of the installation.

70C1041 Digitrip 1150/1150i Ground (Earth) Trip

70C1043 Digitrip 1150/1150i Instantaneous Trip
70C1034 Digitrip 1150/1150i I2t Long Time Trip
70C1035 Digitrip 1150/1150i I4t Long Time Trip
70C1038 Digitrip 1150 IEEE Moderately Inverse
70C1039 Digitrip 1150 IEEE Very Inverse
70C1040 Digitrip 1150 IEEE Extremely Inverse
70C1031 Digitrip 1150i IEC-A Normal Inverse
70C1032 Digitrip 1150i IEC-B Very Inverse
70C1033 Digitrip 1150i IEC-C Extremely Inverse

Effective 10/2004
Page 40 I.L. 70C1036H05

DIGITRIP
TRIP FUNCTION SETTINGS

Circuit No./Address Breaker Shop Order Reference

PER UNIT MULTIPLIERS

Rating Plug Amperes Ir Continuous Ampere Rating

(In) = LDS x In

Ampere
Trip Per Unit Equivalent
Function Setting Multi Setting Time Delay

Inst. In

Long Delay In Sec.

Short Delay Ir Sec.

Ground Fault In Sec.

Date By

Figure 8.1 Typical Trip Function Record Nameplate

Effective 10/2004
I.L. 70C1036H05 Page 41

DIGITRIP
AUTOMATIC TRIP OPERATION RECORD

Circuit No./Address Circuit Breaker Shop Order Reference

Trip Function Settings Reference

Factory Rev. 1 Rev. 2 Rev. 3

Curve Type LSIG*
Slope I2T
Ir = Long PU x ln 1.0
Long Time 4s
Long Memory ON
Short Slope FLAT
Short PU x Ir 3.0
Short Time 0.3s
Inst PU x In 4
Ground* Slope FLAT
Ground* PU x In 0.4 or 0.24
Ground* Time 0.3s

* if supplied

Date Trip Mode Indicator Setting Ref. Setting Investiga

of Trip Change Made ted By

Figure 8.2 Automatic Trip Operation Record

Effective 10/2004
Page 42 I.L. 70C1036H05

GROUND FAULT TEST RECORD FORM

Ground Fault Test Record should be retained by those in charge of the building's electrical
installation in order to be available to the authority having jurisdiction.

Test Date Circuit Breaker Results Tested by

Number

Figure 8.3 Typical Performance Test Record Form

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I.L. 70C1036H05 Page 43

APPENDIX A Zone Interlocking Examples Fault at location 2

The feeder circuit breaker trip unit will initiate the trip in
0.045 seconds to clear the fault and will send an interlock-
ing signal to the main trip unit. The main trip unit will begin
to time out and, in the event that the feeder circuit breaker
NOTICE Z2 does not clear the fault, the main circuit breaker will
clear the fault in 0.5 seconds (as above).
THE PROVISION FOR ZONE INTERLOCKING IS STAN-
DARD ON CIRCUIT BREAKERS WITH DIGITRIP TRIP Fault at location 1
UNITS FOR SHORT TIME AND GROUND FAULT FUNC- There are no interlocking signals. The main circuit breaker
TIONS. THE APPROPRIATE JUMPER TO TERMINAL B8 trip unit will initiate the trip in 0.045 seconds.
AND B9 MUST BE ADDED ON THE CIRCUIT BREAKER
IF ZONE INTERLOCKING IS NOT DESIRED OR IF FIELD
Figure A.2 presents a Zone Selective Interlocking connec-
TESTING IS DESIRED. tion diagram for a system with two main circuit breakers
from incoming sources and a bus tie circuit breaker. Note
that the blocking diode D1 is needed so that the feeder
circuit breakers can send interlocking signals to both the
main and the tie circuit breakers and prevent the tie
EXAMPLE 1: There is no Zone Selective Interlocking. breaker from sending an interlocking signal to itself.
(Standard time delay coordination is used.)

Assume that a ground fault of 2000 Amperes occurs and

refer to Figure A.1.

Fault at location 3
The branch circuit breaker will trip, clearing the fault in 0.1
seconds.

Fault at location 2
The feeder circuit breaker will trip, clearing the fault in 0.3
seconds.

Fault at location 1
The main circuit breaker will trip, clearing the fault in 0.5
seconds.

EXAMPLE 2: There is Zone Selective Interlocking.

Assume a ground fault of 2000 Amperes occurs and refer

to Figure A.1.

Fault at location 3
The branch circuit breaker trip unit will initiate the trip in
0.045 seconds to clear the fault and the branch will send a
restraint signal to the feeder trip unit; the feeder will send a
restraint interlocking signal to Z1.

Main and feeder trip units will begin to time out and, in the
event that the branch circuit breaker does not clear the
fault, the feeder circuit breaker will clear the fault in
0.3 seconds (as above). Similarly, in the event that the
feeder circuit breaker does not clear the fault, the main
circuit breaker will clear the fault in 0.5 seconds (as
above).

Effective 10/2004
Page 44 I.L. 70C1036H05

Notes:
1600A Main A1: Wiring to be twisted pair of AWG #14 to #20. Route
C Zone Interlocking wiring separate from power conductors.
Zone DO NOT GROUND any Zone Interlocking wiring.
ZO
0.5 Sec 1
ZI A2: The maximum distance between two farthest circuit breakers
1200A
on different zones (from the ZO downstream to ZI upstream
terminals) is 250 feet (76m).
Zone 1 1 800A Feeder A3: A maximum of 20 breakers may be contained in parallel
in one zone.
0.3 Sec C
400A ZO Zone A4: Provide a self interlocking jumper (on Zone 3) if
ZI 2 coordination is desired with other downstream circuit breakers.

Zone 2 2 200A Branch

C = Common (ungrounded) - B7 Contact

0.1 Sec ZO = Zone Out Output Signal - B9 Contact

100A to Higher Level Zone
C ZI = Zone In Input Signal - B8 Contact
Zone 3 ZO Zone from Lower Level Zone
ZI 3
= Fault at Location 2
3
See Note A4 Legend
2

Figure A.1 Typical Zone Interlocking

M1 M2
C C
ZO ZO
ZI ZI
0.5 Sec 0.5 Sec
T
C
ZO
ZI
0.3 Sec

F11 F12 D1 1N4004 F21 F22 F23

C C C C C
ZO ZO ZO ZO ZO
ZI ZI ZI ZI ZI
0.1 Sec 0.1 Sec 0.1 Sec 0.1 Sec 0.1 Sec

Figure A.2 Typical Zone Interlocking Connections with Two Main Circuit Breakers (M1, M2) and a Tie Circuit Breaker (T)

Effective 10/2004
I.L. 70C1036H05 Page 45

Appendix B Troubleshooting Guide

Symptom Probable Cause Possible Solution(s) Comments

LED display is not energized. No auxiliary power input.
Wrong auxiliary power Check voltage input terminals A14-A15. Refer to Section 1.6.1.
voltage.
As soon as current starts to Rating plug is not installed Install rating plug and/or check for loose
flow through the circuit or is loose. connections.
breaker, it trips and the
Instantaneous trip LED Rating plug is open Replace rating plug.
comes on. internally.
Trip unit is malfunctioning. Replace trip unit.
LED does not come on when Battery installed backwards. Install correctly.
battery check button is
pressed. Dead battery. Replace battery.
Trip unit is malfunctioning. Replace trip unit.
Circuit breaker trips on There actually is a ground Find location of the fault.
ground fault. fault.
On 4-wire residual systems, Check connections at terminals B4 and See Section 2.3,
the neutral current sensor B5. Check that the neutral current Notes.
may not have the correct sensor ratio matches the breaker. Check
ratio or be properly that the connections from the neutral
connected. current sensor to the circuit breaker are
not reversed. Check B6, B7 for correct
programming of jumper.
Trip unit is malfunctioning. Replace trip unit.
Circuit breaker trips too Connection from Zout to Zin Make connections B8 to B9. Refer to Appendix A.
rapidly on ground fault or is missing.
short delay (Zone Selective
Interlocking not used). Trip unit settings are not Change settings.
correct.
Trip unit is malfunctioning. Replace trip unit.
Circuit breaker trips too Long Time Memory Disable Long Memory.
rapidly on long delay. selected.
Change settings. Long Time Delay
Trip unit settings are not setting is based on 6xIr
correct.

Circuit breaker trips longer The SLOPE setting is set Determine whether I2T or FLAT is See Figures 4.5, 4.8 or
than time setting on Short for I2T response (instead of desired. Check curve for correct time curve
Delay and Ground Fault FLAT) delay if I2T SLOPE is desired.
Circuit breaker trips higher Test Method 1. Apply Aux Power to circuit breaker See also NOTE inI.L.
than ground fault setting and repeat test 29-885B Section 4.8
when field testing using
primary injection method 2. Connect circuit breaker poles in See Fig 5.4
series and repeat test
EEROM Non fatal memory error Note settings via view settings screen. If alarm reappears
ALARM Then enter Program Settings and SAVE after trying the
CURRENT curve. If setpoint download possible solution,
is successful press Reset. Re-verify replace trip unit at first
settings that you desire. opportunity.

Effective 10/2004
Page 46 I.L. 70C1036H05

Appendix B Troubleshooting Guide Continued

Symptom Probable Cause Possible Solution(s) Comments

SETTINGS Set point mismatch Enter Program Settings by using the Esc If alarm reappears after trying the possible solution,
ERROR between CHip A and CHip Button (do not use Reset Button) and SAVE replace trip unit at first opportunity.
ALARM B Microcomputers CURRENT curve. If setpoint download is
successful press Reset. Re-verify settings that Ref. Fig. 3.1
you desire.
SETTINGS ERROR Source Ground 1. Make temporary secondary connector If ground test is to be conducted, apply ground test
ALARM – or – configuration jumper jumper B-6 to B-7 to duplicate actual field current into external sensor’s primary conductor with
disconnected when circuit application – or – secondary leads B-4, B-5 connected to circuit
GROUND FAULT breaker removed from cell breaker.
PICKUP TEST 2. Place circuit breaker back into test
INCORRECT position.
WATCHDOG Low line Voltage Check input voltage for Aux Power A14, A15 See Appendix G and H.
ALARM

Communication Problem 1. Push Reset Button If alarm persists, protection (CHip A) function may
Between CHip A and CHip still be present if STATUS LED is flashing. However,
B Microcomputers 2. Replace unit if WATCHDOG alarm its values cannot be communicated properly to the
reappears or if status LED is not flashing. Display.
Ref. Fig. 3.1 and Section 3.2.1
CIRCUIT BREAKER Digitrip 1150 Firmware 1. Check for Aux. Power A14, A15. See Appendix G
DOES NOT version 8B must be REV
COMMUNICATE WITH 02 or greater for 1150 2. Check address and baud settings. See Section 4.2.3
PowerNet, BIM II mode communication 3. Check status LED and Transmit LED.
4. Check communication wiring B1, B2.
5. Termination resistor missing. See Fig. 4.9.
CIRCUIT BREAKER For communication with Same as above. See Appendix G
DOES NOT AEM II use Digitrip 1150
See Section 4.2.3
COMMUNICATE WITH in the 910 mode.
AEM II Note OK for Ver 6 and Lower
NO VOLTAGE PT dielectric plug removed 1. Circuit breaker is backfed and open. Ref. Section 3.5.
READINGS IN METER
MENU 2. Digitrip is not properly connected/inserted Ref. Fig 1.2
to circuit breaker I1 connector
3. Replace PT Module.
VOLTAGE OR Digitrip METER needs Apply both line voltage and 20% phase A This situation may occur on initial startup on 50 Hertz
CURRENT OR both phase voltages and current one time to setup metering. applications since circuit breakers are typically tested
FREQUENCY at least 20% phase A in the factory at 60 Hz.
READINGS APPEAR current available initially to
WRONG OR lock in frequency
VARYING (Digitrip Cat
11xxx pre-2003
versions only)
Check (Message on The MCR Aux. Switch 52b 1. Check switch continuity on connector K2- Refer to Appendix C
Aux. Display) is not operating or is not 1, K2-2.
Switch wired properly
2. If secondary injection testing is being
done, close circuit breaker and retest.
RAM Memory Error 1. Push Reset Button Replace Trip Unit at first opportunity.
ALARM 2. Replace unit if alarm reappears

Effective 10/2004
 N LINE LA L B LC

Effective 10/2004
ZONE_COM K2-1 Z_COM A BUS 1 K 4-1 A BUS
B-7 J0-13 J0-25 A-17
K2-2 J0-36 A BUS 2 K 4-2 A BUS
J0-26 A-18
52b K2-3 NNPOW K 4-3 NPOW
J0-29 J0-12 B-3
I.L. 70C1036H05

ZONE_IN (MCR) K2-4 Z_IN

B-8 J0-5 SEE NOTE 9
ZONE_OUT K2-5 Z_OUT
B-9 J0-6 CC_DRV K 5-7 CC1 J5-10 INCOM CLOSE
K2-6 J0-35 K1 A-13
WHITE BROWN LO_ALM K 5-4 CC2 J5-9 SR
GF_SGND K2-7 GF_SGND/OFF J0-1 B-12
B-6 J0-34 SET_LAT K 5-6 L02 J5-7 P1
N J0-7 K3 SR
X1 B-5 NEUTRAL1 ACTN K2-9 N1 RESET_LAT K 5-3 SR B-13
J0-4 J0-8 SEE NOTE 7
R/1
X2 B-4 NEUTRAL2 K2-8 N2 J0-47
J0-3 K 4s SEE NOTE 3
DALM K 5-5 SEE NOTE 8
H2 10:1 J0-24 J5-5 ATR_LATCH
K 4r A-9
BLACK J0-23 J5-4 ATR_REL_COM
OUTPUT+ K 5-2 A-10
J2-1 J1-1 K1-1 DGND J0-46 J5-3 ATR_ALARM
J0-16 K2 A-11
HIGH INST.
HIGH J0-39 SEE NOTE 6
COIL A J2-2 BLACK OUTPUT- K 5-1 J5-2 ATR_VOLTAGE
INST. A-14
J2-3 J1-2 K1-2 ST1 1150 POWER RELAY J5-1 ATR_V_COM
TRIP J0-15 A-15
HIGH INST. MODULE
MODULE + J0-38 DIGITRIP 1150
COIL B J2-4

J2-5 TA 24 OHM
HIGH INST. (WHEN RATING INTERFACE OTS2_MAKE
A-4
COIL C J2-6 SUPPLIED) J1-3 K1-3 ST- PLUG BOARD OTS2 OTS2_COM
J0-14 A-5
J0-37 (OPT.) OTS2_BREAK
A-6
SEE NOTE 1

WHT BRN J0-33

OTS1_MAKE
1 ACTC K1-5 C1 J0-32 A-1
B-28 J0-18 OTS1 OTS1_COM
R/1 CSC J0-41 J0-31 A-2
RESERVED FOR B-29 K1-4 C2 (OPT.) OTS1_BREAK
CUSTOMER J0-17 J0-30 A-3
B-30 10:1 J0-40
1 ACTB K1-7 B1 J0-28
J0-20
R/1 CSB J0-43 J0-27
K1-6 B2 ELECTRIC OPERATOR (OPT.) SC
J0-19 J0-11 A-16
Appendix C Typical Circuit Breaker Master Connection Diagram

10:1 J0-42 BRIDGE RECTIFIER

1 ACTA K1-9 A1 J0-10
J0-22 (WHEN REQ.) MOTOR+
J0-9 B-15
R/1 CSA J0-45 MOTOR AC
K1-8 A2
J0-21 J0-2
MOTOR CUT-OFF LEV-IN
10:1 J0-44 SWITCH DOOR SWITCH
RED (WHEN REQ.)
INCOM AC MOTOR-
B-1 I1-1 B-14
INCOM
B-2 I1-2 RESISTOR (WHEN REQ.)

UVR
PT MODULE I1-3 A-7
P3-6 P3-3 J8 Vc J9-3 UVR
L C I1-4 A-8
P3-5 P3-2 J7 Vb J9-2
L B I1-5 INCOM
P3-4 P3-1 J6 Va J9-1 CONNECTOR 52a
L A I1-6 UVR ST P2-2 P2-1 ST
B-10
AC AC ST
B-11

DIELECTRIC DISCONNECT PLUG

(MOUNTED ON LEFT SIDE OF BREAKER)
AC AC

NOTES:
1. 3 WIRE CRIMP IF HIGH INST TRIP MODULE IS SUPPLIED. B-20 B-24
52a
B-21 B-25
2. ALL AUX. SWITCH CONTACTS SHOWN WITH BREAKER IN OPEN POSITION AUX. SWITCH
AND WITH TRIP UNIT IN "NON-TRIPPED" STATE (OTS SWITCHES). (OPTIONAL) B-22 B-26
52b
3. THE "SR" DEVICE HAS ADDITIONAL CIRCUITRY THAT PROVIDES A 0.5 B-23 B-27
SECOND SIGNAL PULSE FOR CLOSING OPERATION. POWER MUST BE
REMOVED AND THEN REAPPLIED FOR A SUBSEQUENT OPERATION.
4. TO PROVIDE SELECTED TIME DELAYS FOR SHORT TIME AND/OR GROUND A-27 B-16
TIME FUNCTIONS FOR TESTING OR NON-ZONE INTERLOCKING APPLICATIONS, 52a
AUX. SWITCH A-28 B-17
A JUMPER FROM B-8 TO B-9 IS REQUIRED. (OPTIONAL)
5. ON THREE POLE BREAKERS ONLY, HAVING GROUND FAULT FUNCTIONALITY, A-29 B-18
52b
A JUMPER INSTALLED FROM B-6 TO B-7 WILL ENABLE SOURCE GROUND A-30 B-19

FAULT SENSING AND DISABLE RESIDUAL GROUND FAULT SENSING. INPUTS

B-4 AND B-5 WILL BE REASSIGNED FOR SOURCE GROUND SENSOR INPUTS.
6. NORMALLY OPEN CONTACT PROGRAMMED AS RELAY A, VIA DIGITRIP FRONT PANEL. A-19 A-23
52a
7. NORMALLY CLOSED CONTACT PROGRAMMED AS RELAY B, VIA DIGITRIP FRONT PANEL. AUX. SWITCH A-20 A-24

8. NORMALLY OPEN CONTACT PROGRAMMED AS RELAY C, VIA DIGITRIP FRONT PANEL. (OPTIONAL)
A-21 A-25
52b
9JUMPERING B-3 (NPOW) TO B-7 TERMINAL WILL ELIMINATE REVERSE POWER CONDITION A-22 A-26
10. JUMPERING B-6 TO B-7 WILL DEFEAT RESIDUAL GROUND FAULT ELEMENT.

LOAD
Page 47
Page 48 I.L. 70C1036H05

Appendix D - Display Menu Diagrams

Appendix D - Page D-1
Startup
SEL
CHANGE ESC
FACTORY Sequence
SETUP?
Program EATON FACTORY **
Factory Settings
Current Curve ELECTRIC SETTINGS
(Page D-12) Page D-23
DT 1150 IN USE

If any current curve setting (shown on pages D-12 and

D-13) is changed from the Factory Settings (D-23), the EATON CUSTOMER
unit will display the following screens on power up. ELECTRIC SETTINGS
DT 1150 IN USE
** Screens will alternate back and forth for 6 seconds and
then fall into the Main Menu.
Notes: BOLDFACE text is blinking.
Menu screens "wrap around" when using the VIEW buttons.
Editable values "wrap around" when using the EDIT buttons.

HARMONIC
Main Menu
Meter
METER ESC / SEL Menu
(Page D-2)
EventLOG

ESC VIEW

METER Event
ESC
EventLOG ESC / SEL Menu
(Page D-3)
VIEW SET
ESC

EventLOG View Settings

ESC
VIEW SET ESC / SEL Menu
(Page D-5)
PGM SET
ESC

ESC VIEW SET Program

PGM SET ESC / SEL Settings Menu
(Page D-11)
HEALTH

PGM SET Health

HEALTH ESC / SEL Data
(Page D-24)
TEST

HEALTH Test
TEST ESC / SEL Menu
HARMONIC (Page D-19)

TEST Harmonics
HARMONIC ESC / SEL Menu
(Page D-20)
METER

Effective 10/2004
I.L. 70C1036H05 Page 49

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-2

Individual screens are only displayed if their

Meter Menu
Display Setting is set to "ON".

If "AUTO" is set in
R3
IA XXXXX Display Settings

2
R2
IN IG IA IB IC IA XXXXX

2
this screen will
IB XXXXX return five minutes IN XXXXX Max rms IB XXXXX
IC XXXXX 5 MINUTE
after last IG XXXXX AMPERES IC XXXXX
keypress. AVERAGE
VIEW

R3

2
IN XXXXX
R2
2
IA IB IC IA XXXXX IN IG
IN XXXXX
IG XXXXX 5 MINUTE IB XXXXX Max rms
IG XXXXX
AVERAGE IC XXXXX AMPERES

XXX Vab R3
IA IB IC IA XXXXX

2
XXX Vbc PF X.XX Min rms IB XXXXX
XXX Vac Hz XX.X AMPERES IC XXXXX

Power R3
IN IG

2
Fwd
or Fwd kW kVAh IN XXXXX
Min rms
Rev XXXXXXX XXXXXXX IG XXXXX
AMPERES

R
kVA ENERGY PF
XXXXXXX Rev kWh Min X.XX
XXXXXXX Max X.XX

Alternate screen that R

kvar ENERGY OP COUNT
will flash on for a
XXXXXXX short time kWh XXXX
XXXXXXX XX = "SLIDING"
or
"FIXED"
R
DEMAND LAST AVG
Fwd R DEMAND XXXXXXX
or
Fwd kW 5 MINUTE RESET

Rev XXXXXXX INTERVAL Max kVA 15 MIN

XXXXXXX INTERVAL
RESET R
R
DEMAND XXXXXXX VALUE?
R
Max kW 15 MIN DEMAND LAST AVG
kVA 5 MINUTE RESET
XXXXXXX INTERVAL
XXXXXXX INTERVAL AVERAGE R2
2

AMPERES?
VALUE NOW RESET RESET
Back to
RESET Min/Max R3
2

XX = "SLIDING" Meter
or screen AMPERES?
"FIXED"

ESC or TimeOut

Effective 10/2004
Page 50 I.L. 70C1036H05

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-3

Event Log
Menu
When a trip event occurs, data from the appropriate Meter Menu
screens is captured and then logged for that event. The event
numbering scheme is a first-in, first-out type. However always use
the Time Stamp data provided and not the Event # as a chronicle.

An alarm event will be logged if "ALARM TO EventLOG" has been

ENABLED (page D-16).

In cases where Trip Unit Power (Aux. power) is lost during or prior to
a tripping event, the Time Stamp message will display "No
EventLog".

EVENT #3
Event #1
EVENT #1 ESC / SEL
(Page D-4)
EVENT #2

VIEW

EVENT #1 EVENT #1
Event #2
EVENT #2 (Page D-4)
HH:MM:SS
EVENT #3 DD-MmmYY

EVENT #2 EVENT #2 Event #1

Event #3
EVENT #3 HH:MM:SS Logged Meter
(Page D-4)
EVENT #1 DD-MmmYY Screens

EVENT #3 Event #2
HH:MM:SS Logged Meter
DD-MmmYY Screens

Possible Events and Logged Meter

Event #3 Menu screen(s) are listed on the
Logged Meter following page.
Screens
Default time is Jan with other values
set to 0.

Effective 10/2004
I.L. 70C1036H05 Page 51

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-4A

Possible
Note: "Meter screens" refer to those on D-2 Events
TRIP
Data and Time Stamp
logged for each event.
LONG 1st & 2nd OVER L-L Voltage and
Meter No data UndrFREQ FREQ screens
DELAY screens
TEMP displayed displayed.
TRIP
TRIP Note 1 TRIP See Note 5

SHORT 1st & 2nd L-L Voltage and

No data OverFREQ FREQ screens
DELAY Meter PlugTRIP displayed displayed.
screens TRIP See Note 5
TRIP

1st & 2nd

INST Meter MAKING Power kW screen
No data RevPower
TRIP screens CURRENT displayed
displayed
Note 2 TRIP See Note 5
TRIP

1st & 2nd PHASE VOLT UN- L-L Voltage and

NEUTRAL Meter 3rd Meter FREQ screens
screens
LOSS screen
BALANCE displayed.
TRIP Note 3 TRIP TRIP See Note 5

GROUND 1st & 2nd HIGH

Meter No data
FAULT screens
INST displayed 1. LONG DELAY TRIP term is
TRIP Note 4 TRIP used by LSI, IEEE and IEC
curve type indicating an
overload trip.
OPEN BY No data
displayed Additional TRIPs for Digitrips 2. INST TRIP values displayed
COMM could be less than actual fault
Cat # 11Pxxx only
levels due to fast response of
this element.
L-L Voltage and
ACC BUS No data UndrVOLT FREQ screens 3. NEUTRAL TRIP is a
TRIP displayed TRIP displayed.
Long Delay Trip on Neutral
See Note 5
or 4th pole

AMPERES L-L Voltage and 4. If IEC -EF style,

1st Meter OverVOLT FREQ screens "EARTH" will replace
OUT OF screens displayed.
TRIP See Note 5 "GROUND"
BALANCE
5. Real Time data is
shown for Voltage and
Frequency. View
EventLog screen for
actual TRIP data.

Effective 10/2004
Page 52 I.L. 70C1036H05

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-4B Possible

Note: "Meter screens" refer to those on D-2
Events
Alarms
Data logged and shown Alarm screens will be real-time
for each event. messages
Additional Alarms for
Cat # 1 1PXXX only

LOW LDPU (LONG Pickup)

PF Meter UndrVOLT 3rd Meter
PF Screen ALARM is setup via
CURRENT curve. It is ALARM Screen
ALARM
always ON

1st & 2nd

1st & 2nd
GROUND Meter LDPU OverVOLT 3rd Meter
Meter
ALARM Screens ALARM Screen
Screens ALARM
Note 4

These Diagnostic
NEUTRAL 1st & 2nd ALARMS are always ON UndrFREQ FREQ Meter
AMPERE Meter ALARM Screen
ALARM Screens SETTINGS
No Data
ERROR Displayed
ALARM
HIGH 1st & 2nd FREQ Meter
OverFREQ
LOAD Meter Screen
Screens ALARM
ALARM
WATCHDOG No Data
ALARM Displayed
PHASE
Operate No Data
OPCOUNT ROT
Counter Displayed
ALARM Meter Screen ALARM
EEROM No Data
ALARM Displayed
kW VOLT UN-
kW 3rd Meter
DEMAND Meter Screen BALANCE Screen
ALARM For Cat. # 11PXXX Only ALARM

FREQ
kVA No Data
kVA OUT OF Displayed
DEMAND Meter Screen BOUNDS
ALARM
CHECK No Data
AUX Displayed
THD
THD SWITCH
Harmonics
ALARM Screen

RAM No Data
ALARM Displayed

Effective 10/2004
I.L. 70C1036H05 Page 53

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-5

View Settings
VOLTAGE View Current
Menu
CURRENT ESC / SEL Curve
(Page D-6)
SYSTEM
VIEW

CURRENT FREQ BC RELAY SLIDING WAVEFORM

SYSTEM RESET DEMAND CAPTURE
DISPLAY XXHz XXXXXX XXXXXX XXXXXX

SYSTEM View Display

DISPLAY Settings
(Page D-7)
INCOM

DISPLAY INCOM
INCOM ADDRESS
AUXRLY XXX

INCOM View Auxiliary

AUXRLY Relays INCOM
ALARMS (Page D-8) BAUD
XXXX

AUXRLY
View Alarms
ALARMS (Page D-9) EXT COMM
ACCBUS
OpenTrip
XXXXXXXX
ALARMS View Accessory
ACCBUS Bus
(Page D-10)
FIRMWARE
EXT COMM
XXXX
ACCBUS DISPLAY PROTECT
FIRMWARE VER XXX VER XXX
TIME REV XXX REV XXX
EXT COMM
CLOSE
FIRMWARE TIME
XXXXXXXX
TIME XX-XXXXX (12-Mar98 format)
VOLTAGE XX:XX:XX

DT 910
TIME View
VOLTAGE,FREQ
COMM
VOLTAGE XXXXXXXX
Settings
CURRENT (Page D-23)

Note: Digitrip 1150 Cat.#1xxx

1 do not have VOLTAGE or SYSTEM main menu. "GENERAL" is used in
place of SYSTEM. FREQ selection and EXT COMM OpenTrip are not available.

Effective 10/2004
Page 54 I.L. 70C1036H05

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-6

Selected curve and trip style

determines the menus shown. The
View Current
LSIG or LSI user can only view the curve set in Settings
Program Settings Menu.
LSIX
CURVE
SELECTED IEC or IEEE

VIEW
IEXX
LONG PHASE CURVE
SLOPE LOSS SELECTED
IXT XXX

Screen is PHASE PHASE

LONG PU AMP UN- skipped if first SLOPE LOSS
X.XX BALANCE AMP UN- XXXXXXX XXX
Ir=XXXXA XXX s BALANCE is
set to "off"
Screen is
Pickup AMP UN- skipped if first
LongTIME AMP UN- X.XX BALANCE AMP UN-
@ 6x Ir BALANCE Ir=XXXXA XXX s BALANCE is
XX.X s XX% set to "off"

PHASE AMP UN-

LONG NEUTRAL Screen is TimeDial BALANCE
MEMORY PROTECT skipped if
X.X XX%
XXX XXX LSIG/LSIA style

SHORT PU NEUTRAL
Screen is
SHORT EXT GND Screen is
XX.X xIr PROTECT skipped if LSIG/
skipped if in
SLOPE CT RATIO Residual GF XXXXX A XXX LSIA style
XXXX XXXX Mode

SHORT EXT GND

SHORT PU GROUND TIME CT RATIO
XX.X xIr TIME X.XX s XXXX
XXXXX A X.XX s
Screens are
skipped
if LSI style INST PU GROUND
SHORT GROUND XX.Xx In TIME
TIME SLOPE XXXXX A X.X s
X.XX s XXXX

GND PU GROUND
INST PU GND PU X.XX SLOPE
XX.X xIn X.XX XXXX A XXXX
XXXXX A XXXX A
*. If IEC -EF style
"EARTH" will replace
"GROUND"

Effective 10/2004
I.L. 70C1036H05 Page 55

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-7

View Display
Settings

IA IB IC
IN IG IA IB IC
XXXXXX AVERAGE Max rms
XXX XXX
VIEW

IN IG IA IB IC IN IG
AVERAGE Max rms
XXX XXX XXX

L-L PF Hz IA IB IC
VOLTAGE Min rms
XXX XXX XXX

POWER kVAh IN IG
Fwd kW Min rms
XXX XXX XXX

kVA ENERGY PF
Rev kWh Min/Max
XXX XXX XXX

kvar ENERGY OP COUNT

kWh
XXX XXX XXX

DEMAND DEMAND
Fwd kW Max kVA
XXX XXX

DEMAND DEMAND
Max kW kVA
XXX XXX

Effective 10/2004
Page 56 I.L. 70C1036H05

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-8

View Auxiliary
" * " (asterisk) is placed beside Relay Menu
the relay letter when at least
one of its RELAY functions is
ENABLED. Group 1 Group 2

RELAY C* PULSE DISABLED

RELAY
RELAY A* SEL INITIATE LDT
RELAY B* XXXXXXXX XXXXXXXX

VIEW ENABLED RELAY A

RELAY RELAY A
kW DMND
ENABLED SDT kVA DMND
RELAY A* kVAh XXXXXXXX
PULSE kWh XXXXXXXX XXXXXXXX
RELAY B*
RELAY C* XXXX
RELAY RELAY A RELAY A
INST THD ALRM UV ALARM
Group 3 XXXXXXXX
XXXXXXXX XXXXXXXX
RELAY B*
RELAY C* RELAY A
RELAY RELAY RELAY A
RELAY A* PF ALARM
VolUnbal GND TRIP OV ALARM
XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
Selected Relay determines Groups displayed.

Relay Groups Displayed RELAY RELAY RELAY A RELAY A

A (Alarming) 1, 2 PULSE INITIATE DISABLED RevPower AmpUNBAL OP ALARM UF ALARM
None PULSE INITIATE ENABLED
B (Blocking) 1, 3 XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
C (Latching) 1, 3

NOTE: RELAY RELAY RELAY A RELAY A

OF TRIP PH LOSS HighLOAD OF ALARM
Group 3 applicable on Digitrip XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
Catalog # 11Pxxx only
(released in 2003 or later)
RELAY RELAY RELAY A RELAY A
UF TRIP OverTEMP LDPU PhROTATE
XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX

RELAY RELAY RELAY A RELAY A

OV TRIP PlugTRIP NeutALRM V UNB AL
XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX

RELAY RELAY RELAY A

"ENABLED" or UV TRIP CommTRIP
"DISABLED" for GND ALRM
all screens
XXXXXXXX XXXXXXXX XXXXXXXX
Relays B & C

Relay A

RELAY
Only

ACC TRIP
Only

XXXXXXXX

Effective 10/2004
I.L. 70C1036H05 Page 57

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-9

View Alarms
GROUND ALARM TO UV VOLT UN-
ALARM EventLOG ALARM BALANCE
XXXX A XXXXXXXX XXXXXX XXX S
VIEW

NEUT AMP THD UV ALARM ON

ALARM ALARM TIME XXX
XXXX A XX% XXX S ROTATION

HighLOAD LOW PF OV OF
TIME ALARM ALARM TIME
XX s X.XX XXXXXX X.XX S

HighLOAD kW OV OF
ALARM DEMAND TIME ALARM
X.XX xIr XXXXXXX XXX S XX.X

OP COUNT kVA UF UF
ALARM DEMAND ALARM TIME
XXXXX XXXXXXX XX.X X.XX S

Non-Selectable Alarm These Groups available for

Cat. # 11PXXX Only
LDPU
ALARM

The message LDPU indicates an overload

WATCHDOG condition. This term is used for a Pickup
ALARM alarm on LSI, IEEE or IEC protection
curves.

SETTINGS
ERROR If IECEF style
ALARM "EARTH" will replace
"GROUND"

EEROM
ALARM

FREQ
OUT OF For Cat. # 11PXXX Only
BOUNDS

CHECK
For Cat. # 11PXXX Only
AUX
SWITCH

RAM
ALARM

Effective 10/2004
Page 58 I.L. 70C1036H05

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-10A

View Accessory
Bus Settings

NO SETTINGS If no relay functions are enabled Save Each of the 4 addresses

"XXXXXXXX = (Page D-19) is a separate Save group
XXXXXXXX " DIGITAL OUTPUT If any relay functions are enabled

ADDR 01
XXXXXXXX
XXXXXXXX OFF
AUX
VIEW
RLY FUNC BELL
1 DEAD
ALARM
ADDR 02 2 XXXX WATCH
XXXXXXXX LDT
XXXXXXXX SDT
RLY FUNC INST
SEL 2 GndT
3 XXXX GFAlm
HLAlm

ADDR 03 RLY FUNC

XXXXXXXX 3
XXXXXXXX 4 XXXX

RLY FUNC
ADDR 04 4
XXXXXXXX 1 XXXX
XXXXXXXX

Effective 10/2004
I.L. 70C1036H05 Page 59

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D -10B

View
VOLTAGE

VOLTAGE ENABLED
SETTING DISABLED
XXXXXXX
UndrVOLT VOLT UN-
TRIP BALANCE
XXX V XXX s

VIEW

UndrVOLT VOLT UN-

TIME BALANCE
XXX s XX %

OverVOLT RevPower
TRIP TIME
XXX V XXX s

OverVOLT RevPower
TIME TRIP
XXX s XXXXXXX

UndrFREQ OverFREQ
TRIP TIME
XX.X Hz X.XX s

UndrFREQ OverFREQ
TIME TRIP
X.XX s XX.X Hz

Effective 10/2004
Page 60 I.L. 70C1036H05

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-11

Program
VOLTAGE Program Current Settings
CURRENT ESC / SEL Curve Menu
SYSTEM (Page D-6)

Program

CURRENT FREQ BC RELAY SLIDING WAVEFORM

SYSTEM RESET DEMAND CAPTURE
DISPLAY Hz
50,60 Manual, OFF, max kW, ENABLED
Auto max kVA
DISABLED
SYSTEM Program Display
DISPLAY Settings INCOM
001-FFE
INCOM (Page D-7) ADDRESS in hex

DISPLAY
INCOM
INCOM
AUXRLY 9600
BAUD 1200

INCOM Program Auxiliary

AUXRLY Relays
ALARMS (Page D-8)
EXT COMM
ENABLED
OpenTrip DISABLED
AUXRLY
Program Alarms
ALARMS (Page D-9)
TRIP uses TA device. OPEN
requires a separate Shunt Trip
ACCBUS wired through Aux Relay C
(terminals (A-9,A-10))
EXT COMM when programmed as
EXT COMM TRIP via
ALARMS OPEN PowerNet. Requires BC Reset
Program TRIP (auto) in system.
ACCBUS Accessory Bus
TripLink (Page D-10)

ACCBUS EXT COMM ENABLED

TripLink Program TripLink CLOSE DISABLED
(Page D-18)
TIME

TripLink DT 910
TIME Program Time ENABLED
(Page D-18)
COMM
DISABLED
VOLTAGE

Note: Throughout Program Settings sub-menus

TIME Program
VOLTAGE VOLTAGE,FREQ with blocks ( ) represent variable
Settings information that can be directly changed
CURRENT (Page D-23)
with the EDIT buttons, while X's
Note: Digitrip 1150 Cat. # 1 1xxx do not have VOLTAGE or SYSTEM main represent variable information that is
menu. "GENERAL" is used in place of SYSTEM. FREQ selection and EXT
COMM OpenTrip are not available. viewable.

Effective 10/2004
I.L. 70C1036H05 Page 61

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-12

Program
11LSIG or 11IEC-EF or
Current Curve
11PLSIG 11PIECEF IEEE/IEC
Catalog # Catalog #

IEEE XX Program IEC XX

LSIG XX SEL LSIG Curve SEL LSIG XX
(Page D-13) Represents the active
XX =
curve.

VIEW VIEW "ON" or left blank,

automatically. (Not editable.)
Set to "ON" if settings are
LSIG XX LSIG XX saved within that curve.
IEEE XX IEC XX Only one "ON" at a time.

SEL SEL

MOD INV PHASE IEC-A PHASE 1 to 30 s

VERY INV SLOPE IEC-B
LOSS OFF
EXT INV IEC-C
(steps of 1 s)

0.40 - 1.00 PICKUP AMP UN- Screen is

0 - 240 s
(steps of . BALANCE (steps of 1 s) skipped if first
0.05)
Ir=XXXXA s AMP UN-
BALANCE is set
to "OFF"

MOD INV 0.1 - 5.0 PHASE IEC-A 0.05 - 1.00 AMP UN- 5% - 25%
OFF
VERY INV 0.2 - 5.0 TimeDial IEC-B 0.10 - 1.00 BALANCE (steps of
EXT INV 0.2 - 5.0 IEC-C 0.20 - 1.00
(steps of 0.1)
. (steps of 0.05)
% 1%)
Screen is skipped if
1.5 - 10.0x or LSIG factory style. Also
1.5 - 12x or SHORT PU NEUTRAL requires 4 pole circuit
breaker or separately
50%
1.5 - 14x
. xIr PROTECT 100%
wired Neutral Sensor
(steps of 0.5)
(and additional XXXXX A %
none
setting M1) 1000/1
Screen 800/1 none denotes
SHORT skipped if EXT GND 400/1 default
0.10 - 0.50 breaker 200/1
(steps of
TIME contacts B-6
CT RATIO 100/1
to In value
0.05) . s is not 50/1
connected 25/1
to B-7 10/1
M1 = 10x or 2.0 - M1 INST PU GROUND 0.10 - 0.50
= 12x or OFF . x In TIME (steps of
Screens are
= 14x (steps of 0.5) XXXXX A 0.05)
. s skipped if LSI
factory style

IEEE IEC
Screen is skipped GND PU
0.24 - 1.00 x In 0.10 - 1.00 x In GROUND
if LSI curve is or x Ext GND CT . or x Ext GND CT FLAT * If IEC -EF style
SLOPE
selected. (steps of 0.01) XXXX A (steps of 0.01) and I2T "EARTH" will
OFF setting replace
"GROUND"

Effective 10/2004
Page 62 I.L. 70C1036H05

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-13

Program
Save CURRENT
(Page D-19) Curve
LSI-G
LONG PHASE 1 - 30 s
2
4
SLOPE LOSS OFF
I T (steps of 1 s)

VIEW

LONG PU AMP UN- Screen is skipped if

0 - 240 s first AMP UN-
0.40 - 1.00 . BALANCE (steps of 1 s) BALANCE is set to
(steps of 0.05) Ir=XXXXA s "OFF"

If LONG SLOPE =
LongTIME AMP UN- 5% - 25%
I2T: I4T:
@ 6x Ir BALANCE OFF (See Section 4.2.2)
2.0 - 24.0 1.0 - 5.0
(steps of 0.5) (steps of 0.5) . s % (steps of 1%)

Screen is skipped if LSIG

LONG NEUTRAL factory style. Also requires
ON 50% 4 pole circuit breaker or
OFF
MEMORY PROTECT 100% separately wired Neutral
Sensor.

none
Screen 1000/1 none denotes default
skipped if
SHORT circuit EXT GND 800/1 to In value
FLAT 400/1
I2T
SLOPE breaker
contacts B-6
CT RATIO 200/1
is not 100/1
connected to
B-7 50/1
25/1
1.5 - 10x or
10/1
1.5 - 12x or SHORT PU GROUND
1.5 - 14x
(steps of 0.5) . xIr TIME 0.10 - 0.50
(and additional XXXXX A . s (steps of 0.05)
Screens Screens are
setting M1 xIn)
are skipped if
skipped LSI style
if LSIA
SHORT style
GROUND
0.10 - 0.50 TIME SLOPE FLAT
I2T
(steps of 0.05) . s

Reflects
M1 = 10x or INST PU GND PU 0.10 - 1.00 and OFF (IEC style only)
2.0 - M1 Ground 0.24 - 1.00 (IEEE) with 1200A Max
= 12x or OFF . xIn Alarm .
0.10 -1.00 for LSIA style unit
= 14x (steps of 0.5) XXXXX A setting if XXXX A (steps of 0.01)
LSIA style
* If IEC -EF style
"EARTH" will replace
"GROUND"

Effective 10/2004
I.L. 70C1036H05 Page 63

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-14 Program

Display
Settings
Save
(Page D-19)

IA IB IC IN IG IA IB IC
AUTO
MANUAL
AVERAGE Max rms

VIEW

IA IB IC IN IG
ON IN IG AVERAGE Max rms
OFF

All display screens except the L-L IA IB IC

first use "ON" or "OFF".
VOLTAGE PF Hz Min rms

POWER IN IG
kVAh
Fwd kW Min rms

ENERGY PF
kVA Rev kWh Min/Max

kvar ENERGY
kWh OP COUNT

DEMAND DEMAND
Fwd kW Max kVA

DEMAND DEMAND
Max kW kVA

Effective 10/2004
Page 64 I.L. 70C1036H05

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-15

Program Aux
" * " (asterisk) is placed Relays Menu
beside the relay letter when
at least one of its RELAY
functions is ENABLED. Group 1

Group 2
RELAY C* PULSE DISABLED
RELAY
RELAY A* SEL INITIATE LDT
RELAY B*

VIEW ENABLED RELAY A

RELAY RELAY A
kW DMND
ENABLED SDT kVA DMND
RELAY A*
RELAY B* PULSE kVAh
RELAY C* kWh
RELAY RELAY A
RELAY A
INST THD ALRM
UV ALARM
Group 3
RELAY B*
RELAY C* RELAY A
RELAY RELAY RELAY A
RELAY A* PF ALARM
VolUnbal GND TRIP OV ALARM
"ENABLED"
or
"DISABLED" RELAY RELAY RELAY A RELAY A
for all screens OP ALARM
RevPower AmpUNBAL UF ALARM

Selected Relay determines Groups displayed.

Relay Groups Displayed RELAY RELAY RELAY A RELAY A

A (Alarming) 1, 2 PULSE INITIATE DISABLED
None PULSE INITIATE ENABLED OF TRIP PH LOSS HighLOAD OF ALARM
B (Blocking) 1, 3
C (Latching) 1, 3

RELAY RELAY RELAY A RELAY A

NOTE: UF TRIP OverTEMP LDPU PhROTATE

Group 3 applicable on Digitrip

Catalog # 11Pxxx only
(released in 2003 or later) RELAY RELAY RELAY A RELAY A
OV TRIP PlugTRIP NeutALRM V UNB AL

RELAY RELAY RELAY A

"ENABLED" or
UV TRIP CommTRIP GND ALRM
"DISABLED" for
all screens
Relays B & C

Relay A

RELAY
Only

ACC TRIP
Only

Effective 10/2004
I.L. 70C1036H05 Page 65

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-16

Program
Save
(Page D-19)
Alarms

0.10 to 1.00, 1200A Max

GROUND OverVOLT UndrFREQ
1 to 250s
IEEE ALARM TIME (steps of 1s)
ALARM 58 to 62 (60Hz) or
OFF
(steps of 0.01) A s . Hz 48 to 52 (50Hz)

Screen is skipped if VIEW

LSI or LSIA style

NEUT AMP OverVOLT 180 to 720V UndrFREQ

OFF 0.2 to 5.00 s
See Note
ALARM ALARM OFF TIME (steps of 0.02)
below A V (steps of 1V) . s

HighLOAD UNdrVOLT OverFREQ

1 to 250s 58.0 to 62.0 (60Hz)
1 to 60 s TIME TIME (steps of 1s)
ALARM 48.0 to 52.0 (50Hz)
s s . Hz

range HighLOAD UNdrVOLT OverFREQ

90 to 670V
(0.50 to 1.00 xIr) 0.2 to 5.00 s
OFF
ALARM ALARM OFF TIME (steps of 0.02)
A V (steps of 1V) . s
(steps of 0.05)

1 to 12,500 OP COUNT ALARM TO ALARM ON

ENABLED ABC, CBA
OFF ALARM EventLOG DISABLED OFF
(steps of 1) ROTATION

1 to 12,500 kVA THD 10% to 30% VOLT UN-

5 to 50 %
OFF DEMAND ALARM OFF BALANCE (steps of 1%)
(steps of 1) % (steps of 1%) %

1 to 12,500 kW LOW PF 0.50 to 0.95 VOLT UN-

1 to 250
OFF DEMAND ALARM OFF BALANCE (steps of 1s)
(steps of 1) . (steps of 0.05) s

Notes: Front Panel Display of NEUTral AMPere ALARM will be in amperes. Equation used is: * If IEC -EF style
"EARTH" will replace
Amperes = In (amperes) x Neutral Alarm Pickup Setting ( 0.10 to 1.0 x In is range ) "GROUND"

The Neutral Alarm (if not set to OFF) will also alarm if Neutral (Long Pickup value) is exceeded.
The Neutral alarm function is not possible on breakers used in a Source Ground or Zero Sequence
Ground Fault application.

Voltage, Frequency and Phase Rotation alarming requires Digitrip Cat # 11PXXX
.

Effective 10/2004
Page 66 I.L. 70C1036H05

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-17A

Program
Accessory Bus

NO SETTINGS If no relay functions are enabled Save Each of the 4 addresses is

"XXXXXXXX = (Page D-19) a separate Save group
XXXXXXXX " DIGITAL OUTPUT If any relay functions are enabled

ADDR 01
XXXXXXXX
XXXXXXXX OFF
AUX
VIEW
RLY FUNC BELL
1 DEAD
2 XXXX ALARM
ADDR 02 WATCH
XXXXXXXX LDT
XXXXXXXX SDT
RLY FUNC
SEL INST
2 GndT
3 XXXX GFAlm
HLAlm
ADDR 03 RLY FUNC
XXXXXXXX 3
XXXXXXXX 4 XXXX

RLY FUNC
ADDR 04 4
XXXXXXXX 1 XXXX
XXXXXXXX

Effective 10/2004
I.L. 70C1036H05 Page 67

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-17B

Program
VOLTAGE

VOLTAGE
ENABLED *
SETTING DISABLED

UndrVOLT VOLT UN-

90 t0 670V
OFF TRIP BALANCE 1 to 250s
(steps of 1V) V s
VIEW

UndrVOLT VOLT UN- 5% to 50%

1 to 250s TIME BALANCE OFF
s % (steps of 1%)

180 to 720V OverVOLT RevPower

OFF TRIP TIME 1 to 250s
(steps of 1V) V s

OverVOLT RevPower OFF,

1 to 250s TIME TRIP 1 to 65500 kW
s (steps of 1)

OFF UndrFREQ OverFREQ

58.0 to 62.0 (60Hz) TRIP TIME 0.2 to 5.0 s
48.0 to 52.0 (50Hz)
steps of 0.1Hz
. Hz . s

UndrFREQ OverFREQ OFF

58.0 to 62.0 (60Hz)
0.2 to 5.0 s TIME TRIP 48.0 to 52.0 (50Hz)
. s . Hz steps of 0.1Hz

* This is the Master Setting that will disable (enable) all the following trip functions.
It also disables (enables) the associated voltage alarm functions.

Effective 10/2004
Page 68 I.L. 70C1036H05

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-18 Program

Settings Program
Menu TripLink

No
TripLink
To Program
CONFIG Settings Menu
ERROR
YES if...
Yes
Receiving circuit
breaker is open
and
VL-L=0
THIS PRESS
Alternate screen that will
and BREAKER SAVE flash on for a short time.
IA, IB, and IC TO LEARN TO LEARN
phase currents = 0
and
Both circuit breakers
involved have same
rating plug/frame and style
LOADING

SAVING

No TripLink
Transfer TRANSFER To Program
Successful? Settings Menu
ERROR

Yes

TripLink
TRANSFER Program
COMPLETE Time
Save
(Page D-19)
TIME XX: :XX
As each value is
XX-XXXXX 12-Mar98 format MINUTES edited, the top line will
XX:XX:XX reflect the change.

VIEW

-XXXXX :XX:XX
DAY HOURS

XX- XX XX-XXX
MONTH YEAR
-

Effective 10/2004
I.L. 70C1036H05 Page 69

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-19

Save

Save

Previous SETTINGS Savable ESC OR (TIMEOUT) SAVE

Menu TRANSFER Data
SAVE
XXXXXXXX
Level ERROR Screen XXXXXXXX

NO
(AUTO)
SAVE

SETTINGS
TRANSFER YES SAVING
COMPLETE
Transfer
Successful?

SAVE SAVE SAVE SAVE SAVE

XXXXXXXX = LSIG IEEE IEC LSI
XXXXXXXX GROUP? GROUP? GROUP? GROUP?

SAVE SAVE SAVE

Note: SYSTEM is labeled SYSTEM DISPLAY INCOM
GENERAL for Digitrip GROUP? GROUP? GROUP?
Cat # 11XXX

SAVE SAVE SAVE

RELAY A RELAY B? RELAY C?
GROUP? GROUP? GROUP?

SAVE
ALARMS?

SAVE
ACCBUS
GROUP?

SAVE
TIME?

Effective 10/2004
Page 70 I.L. 70C1036H05

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-20

Test Menu

NOTE: If LSI curve is selected, GND TEST will not be available.

Current Testing
PH TEST TRIP
GND TEST ESC / SEL NON-TRIP

GND TEST
0.1 to 2.0
. x In (steps of 0.1)
XXXXX A
NON-TRIP
TRIP

VIEW ESC / SEL

PRESS
SAVE
TO TEST

GND TEST TRIP ESC / SEL

PH TEST NON-TRIP

PH TEST 0.4 to M1 SAVE

. x In (steps of 0.1)
XXXXX A
NON-TRIP
TRIP

TESTING!

TRIP TEST XXXXX NON-TRIP

TEST
XXXXX
TestTRIP
TIME TIME
XX:XX:XX XXX.X
XX-XXXXX SECONDS

IA XXXXX PH TEST
IB XXXXX CURRENT
IB XXXXX XXXXX A

* If IEC -EF style

IN XXXXX "EARTH" will replace
IG XXXXX "GROUND"

Effective 10/2004
I.L. 70C1036H05 Page 71

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-21

Harmonics
Menu
HARMON N
THDA XX%
THDB XX%

VIEW

THDA XX%
THDB XX%
THDC XX%

THDB XX% HARMON C

THDC XX% HARMON N
THDN XX% THDA XX%
HARMON X
01 XX%
02 XX%
THDC XX% HARMON B
THDN XX% HARMON C
CFA X.X HARMON N
HARMON X
03 XX%
04 XX%
ESC / SEL
THDN XX% HARMON A
CFA XX.X HARMON B Using the View keys to scroll,
CFB XX.X HARMON C the 1st through 27th harmonic
of each line can be viewed.

CFB XX.X CFN XX.X HARMON X

CFC XX.X HARMON A 27 XX%
CFN XX.X HARMON B

CFC XX.X
CFN XX.X
HARMON A

Effective 10/2004
Page 72 I.L. 70C1036H05

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-22 Multiple

Alarm
Screens

MULTIPLE * XXXX XXXX XXXX

SEL SEL
ALARMS ALARM ALARM ALARM

View

1st meter screen

(if applicable)

View

2nd meter screen

(if applicable)

* Note:
If more than one alarm condition exists in the system, the "Mutliple Alarm" screen will be
displayed and alternate with one of the alarm causes. Pressing the select pushbutton will
display the next alarm condition. Pressing the ESCape will exit out and return to normal
menu screen. However, the Alarm LED stays on as a reminder.

Effective 10/2004
I.L. 70C1036H05 Page 73

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-23

VOLTAGE
ENABLED *
Program
SETTING DISABLED VOLTAGE

90 t0 670V UndrVOLT VOLT UN-

OFF TRIP BALANCE 1 to 250s
(steps of 1V) V s
VIEW

UndrVOLT VOLT UN- 5% to 50%

1 to 250s
TIME BALANCE OFF
s % (steps of 1%)

180 to 720V OverVOLT RevPower

OFF TRIP TIME 1 to 250s
(steps of 1V) V s

OverVOLT RevPower OFF,

1 to 250s TIME TRIP 1 to 65500 kW
s (steps of 1)

OFF UndrFREQ OverFREQ

58.0 to 62.0 (60Hz)
48.0 to 52.0 (50Hz)
TRIP TIME 0.2 to 5.0 s
steps of 0.1Hz . Hz . s

UndrFREQ OverFREQ OFF

58.0 to 62.0 (60Hz)
0.2 to 5.0 s TIME TRIP 48.0 to 52.0 (50Hz)
. s . Hz steps of 0.1Hz

* This is the Master Setting that will disable (enable) all the following trip functions.
It also disables (enables) the associated voltage alarm functions.

Effective 10/2004
Page 74 I.L. 70C1036H05

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-24

HEALTH

TRIPUNIT TRIPUNIT
RESET MAX TEMP
MAX TEMP RESET RESET
VALUE? (see
XX.X C note)

INST/SDT INST/SDT
RESET
FAULTS RESET RESET FAULTS
VALUE?
XXX 0

LDT/GFT LDT/GFT
RESET
EVENTS RESET RESET EVENTS
VALUE?
XXX 0

OP.COUNT OP.COUNT
RESET
RESET RESET
VALUE?
XXX 0

BKR LAST BKR LAST

OPERATED OPERATED
XX-XXXXX XX:XX:XX
(format 12-Aug-98) (format Hour:Minute:Second)

NOTE: The temperature reset is available on Rev. F firmware or higher. After the value
has been reset, " - - - -" will be displayed for apprximately three seconds until a new
temperatue value has been read.

Effective 10/2004
I.L. 70C1036H05 Page 75

Appendix D - Display Menu Diagrams Continued

Appendix D - Page D-25
Factory
CURRENT Protection LSIG ON Settings

LSIG Current Curve IEEE Curve IEC Curve

LONG SLOPE I2T PHASE SLOPE MOD INV PHASE SLOPE IEC - A

LONG PU 1.00 Pickup 1.00 Pickup 1.00

LONG TIME 4.0 s PHASE TimeDial 2.0 PHASE TimeDial 0.20

LONG MEMORY ON SHORT PU 3.0 SHORT PU 3.0

SHORT SLOPE *** FLAT SHORT TIME 0.30 s SHORT TIME 0.30 s

SHORT PU 3.0 INST PU 4.0 INST PU 4.0

SHORT TIME 0.30 s GROUND PU** 0.402 EARTH PU** 0.40

INST PU 4.0 GROUND SLOPE**** EARTH SLOPE**** FLAT

FLAT

GROUND PU** 0.402 GROUND TIME**** EARTH TIME**** 0.30 s

0.30 s

GROUND SLOPE**** EXT GND CT RATIO** EXT EARTH CT RATIO** none

FLAT none

GROUND TIME**** NEUTRAL PROTECT* NEUTRAL PROTECT* 100%

0.30 s 100%

EXT GND CT RATIO** AMP UNBALANCE AMP UNBALANCE OFF

none OFF

NEUTRAL PROTECT* AMP UNBALANCE (time) 10 s AMP UNBALANCE (time) 10 s

100%

AMP UNBALANCE PHASE LOSS PHASE LOSS OFF

OFF OFF

AMP UNBALANCE (time) 10 s

* Applicable on LSI or IEC factory styles only
PHASE LOSS OFF ** Applicable on LSIG, LSIA and IEC-EF
*** Only available on LSIG, LSI, LSIA Current Curve. On IEEE curve and IEC
VOLTAGE Protection DISABLED ***** curve, LONG MEMORY and SHORT 2
T SLOPE
I settings are not available.
**** Applicable on LSIG, IEC-EF
***** VOLTAGE PROT and FREQ settings available on Cat #11PXXX only.
DISPLAY(6 active)

IA IB IC AUTO
IN IG ON
L-L VOLTAGE ON
FwdPower ON
PF Hz ON
ENERGY FWD & REV ON INCOM TEST
(all others) OFF
INCOM ADDRESS 100 hex PH TEST 0.4x In
AuxReLaYs All relays DISABLED

ALARMS 1
All alarms OFF INCOM BAUD RATE 9600 GND TEST 0.1x In
ACC BUS Address1 Relay1 is Aux.-Aux Switch
All other addresses and relays OFF EXT COMM OpenTrip ENABLED

SYSTEM FIXED DEMAND 15 Min window EXT COMM TRIP

WAVEFORM CAPTURE OFF
FREQ 60Hz
Relay B,C MANUAL EXT COMM CLOSE ENABLED

DT 910 COMM DISABLED

1. Except LSIA will have Ground Alarm on @ .40x
2. Plug ratings 3200, 4000, 5000, 6300 A are set to .24

Effective 10/2004
Page 76 I.L. 70C1036H05

Appendix E Display Abbreviations

Glossary
of Terms
A-K

Abbreviation Definition Notes

A A, AMP amperes
ACC accessory
ACCBUS accessory bus
ADDR address
ALRM alarm
AmpUNBAL amperes out of balance
AUX auxiliary
AuxRLY auxiliary relay
AVG average
B BELL bell alarm
C CF crest factor
COMM communications
CommTRIP communications trip
CT current transformer
D DEAD deadman alarm
DD day
DMND demand
DT Digitrip
E Erth earth
ESC ESCape pushbutton on Digitrip
EVNT event
EXT external
F FREQ frequency
FreqT Frequency Trip
FUNC function
FwdPower forward power
G GFAlm ground fault alarm
GND ground
GroundPU ground pickup
H HARMON harmonic
HH hours
HLAlm High Load Aarm
Hz hertz
I IA phase A current
IB phase B current
IC phase C current
IEC International Electrotechnical Commission
IEC-EF IEC Earth Fault
IEEE Institute of Electrical and Electronics Engineers
IG ground current
IN neutral current
INST instantaneous
INV inverse
In max continuous current rating
Ir continuous current rating
J
K kVA kilovolt ampere
kVAh kilovolt ampere hour
kvar kilovolt ampere reactive
kW kilowatt
kWh kilowatt hour

Effective 10/2004
I.L. 70C1036H05 Page 77

Glossary
of Terms
L-Z

Abbreviation Definition Notes

L L-L line-to-line
LONG PU long delay pickup
LDPU long delay pickup
LDT long delay trip
LSI Long, Short, Instantaneous Trip
LSIA Long, Short, Instantaneous Trip, Ground Alarm Only
LSIG Long, Short, Instantaneous, Ground Trip
M Max maximum
Min minimum
MIN minute
MM minutes
Mmm month
N NEUT neutral
NeutALRM neutral alarm
O OF Over Frequency
OP operation
OV Over Voltage
OverTEMP over temperature
P PF power factor
PGM program
PH phase
phROTATE phase rotation alarm
PICKUP pickup Also known as Long PU and LDPU
PlugTRIP rating plug trip
PROTECT protection
PU pickup
Q
R REV revision
Rev reverse
RevPower reverse power
RLY relay
rms root-mean-squared
RpwrT Reverse Power Trip
S s seconds
SDT short delay trip
SEL SELect pushbutton on Digitrip
SET settings
SETTINGS setting
SS seconds
T TEMP temperature
THD total harmonic distortion
U UF Under Frequency
UNBAL unbalance
UndrFREQ Under Frequency
UndrVOLT Under Voltage
UV Under Voltage
V V volts
Vab line voltage from phase A to phase B
Vbc line voltage from phase B to phase C
Vca line voltage from phase C to phase A
VER version
Vol Unbal Voltage Unbalance
W WATCH watchdog alarm
X
Y YY year
Z

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Page 78 I.L. 70C1036H05

Appendix F Digitrip Settings and Descriptions

Digitrip 1150 Settings

Setting Description
Protection Firmware version The protection firmware version number, in hexadecimal.
Display Firmware version The display firmware version number, in hexadecimal.
Curve Type The curve type:
LSI – Long, Short, Instantaneous
LSIG – Long, Short, Instantaneous, Ground
LSIA – Long, Short, Instantaneous, Alarm on Ground only
IEEE – (IEEE Mod. Inv., Very Inv., Extremely Inv.) Short, Instantaneous
IEC – (IEC-A, -B, -C) Short, Instantaneous
Rating (In) Breaker MAX Full Load Current Continuous Rating (In) in Amperes
(PLUG RATING).
Frequency Measured system frequency of voltage.
Ground Current Sensing Residual or Source ground or Zero Sequence.
Long Delay Pickup = Ir Defines a current level where load current above this setting will cause an
eventual trip.

Rating (Ir) The continuous current setting of the circuit breaker.

Long Delay Slope Shape of the inverse-time-over-current (LongTIME) curve:
I2T
I4T
Long Delay Time The time delay setting in seconds before tripping @ 6xIr current level.
Short Delay Pickup Defines a current setting usually set much higher than continuous current
(a multiple of Ir) that will initiate timing of this function.

When the current reaches and sustains the level of the pickup setting for
the period defined by the Short Time setting, the circuit breaker trips.
Short Delay Slope Shape of the Short Time Curve.
FLAT (fixed time)
I2T (applicable with I2T Long Delay Slope only)
Short Delay Time The delay time before tripping after short delay is picked up.
Instantaneous Pickup (a multiple of In) Current above this setting will trip the circuit breaker immediately.
Ground (Earth) Fault Pickup (a multiple Ground current above this setting will initiate a Ground trip or Ground
of In) alarm.
Ground (Earth) Slope Shape of the Ground Curve:
FLAT (fixed time)
I2T
Ground (Earth) Time The delay time before tripping on Ground.
Pickup Defines a current level where load current above this setting will cause an
eventual trip for the IEEE or IEC curve types.

Rating (Ir) The continuous current setting of the circuit breaker.

TimeDial The TimeDial setting controls the time scale that determines the tripping
of the inverse time characteristic for an IEEE or IEC curve.
Amperes Out of Balance Trip % Percent difference setting between the Max and Min phase currents which,
Unbalance when exceeded, will trip the circuit breaker.
Amperes Out of Balance Trip Time The required duration of the Amperes Out of Balance Trip condition
before the circuit breaker trips.
Phase Loss Trip Time The Phase Loss Time is the duration of a phase loss condition before the
circuit breaker trips. This function will trip when a 75% difference
between Max phase and the Min phase currents exists.
External Ground Scale Factor User selectable Ground CT Ratio (when applicable).
Neutral Ratio User selectable. 50% or 100%. Select 50% for protecting ½ size neutral
conductors. (Applicable for non-ground fault units only.)
4th Pole Protection Neutral or 4th pole protection. (Applicable for non-ground fault style
units.)

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I.L. 70C1036H05 Page 79

Digitrip 1150 Settings (continued)

Setting Description
Long Memory Indicates whether over-current memory function is on or off. (Applicable on LSI,
(Thermal Memory) LSIG and LSIA curves only.)

Sliding Window Assignment Determines if the maximum kW demand or the maximum kVA demand is
calculated on a fixed or sliding 15-minute window.

Auto Waveform Capture Interval The time between auto waveform captures.

High INST Trip The circuit breaker tripped at a high fault current via separate High INST Module.
See Appendix C.

High Load Alarm When the current reaches the setting, a High Load Alarm occurs.

High Load Time The circuit breaker waits the duration of the High Load Time before entering into
an alarm condition.

Alarm to Event Log When enabled, alarm events are stored into the Event Log.

Ground Pickup Alarm When ground current exceeds this setting, a Ground Pickup Alarm occurs (when
applicable).

Neutral Pickup Alarm When neutral current exceeds this setting, a Neutral Pickup Alarm occurs.

Breaker Operations Count Alarm When circuit breaker operations count exceeds this setting, a circuit Breaker
Operations Count Alarm occurs.

Low Power Factor Alarm When the power factor falls below this setting, a Low Power Factor Alarm occurs.

THD Alarm When the percent THD exceeds this setting, a THD Alarm occurs.

kW Demand Alarm When the kW demand reaches this setting, a kW Demand Alarm occurs.

kVA Demand Alarm When the kVA demand reaches this setting, a kVA Demand Alarm occurs.

Activate Alarm Relay A on Trip The trip conditions upon which Alarm Relay A is activated:
Long Delay
Short Delay
Instantaneous
Ground Fault
Ampere Unbalance
Phase Loss
Over Temperature
Rating Plug
External Communications
Accessory Bus

Pulse Initiate Relay A The pulse initiator, a means of measuring kWh of kVAh energy, is on or off. If on,
no other functions can be assigned to Relay A.

Activate Alarm Relay A on The alarm conditions upon which Alarm Relay A is activated:
Alarm Ground Under Voltage
Neutral Amp Over Voltage
Long Delay Pickup Under Frequency
High Load Over Frequency
Operations Count Phase Unbalance
Low Power Factor Phase Rotation
THD
kW Demand
kVA Demand

Effective 10/2004
Page 80 I.L. 70C1036H05

Digitrip 1150 Settings (continued)

Setting Description
Activate Block Close Relay B on Trip The trip conditions upon which Block Close Relay B is activated:
Long Delay
Short Delay
Instantaneous
Ground Fault
Ampere Unbalance
Phase Loss
Over Temperature
Rating Plug
External Communications
Accessory Bus (when applicable)
Under Voltage
Over Voltage
Under Frequency
Over frequency
Phase Unbalance

Activate Latch Relay C on Trip The trip conditions upon which Latch Relay C is activated:
Long Delay
Short Delay
Instantaneous
Ground Fault
Ampere Unbalance
Phase Loss
Over Temperature
Rating Plug
External Communications
Accessory Bus (when applicable)
Under Voltage
Over Voltage
Under Frequency
Over frequency
Phase Unbalance

Return to Metered Current Display When set to Automatic, returns the trip unit display to the metered phase
A, B and C current screen if the unit keypad is idle for 5 minutes.

INCOM Address Communication address 001 through FFE.

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I.L. 70C1036H05 Page 81

Appendix G Auxiliary Relays

L L

SR

Effective 10/2004
Page 82 I.L. 70C1036H05

Appendix H Digital Relay Accessory Module

Control
L
Voltage 3

100 Digital Relay Digital Relay Digital Relay

ohm
5
7
A17 A18

Shield

Dedicated local network

for each Magnum Circuit Breaker

Magnum Circuit Breaker

Notes:
1 The Digitrip 1150 front panel is used to program the external module for any
combination of the following: Aux Switch, BELL Alarm, INST ,SDT, LDT
GndT or GFAlm, HLAlm, DEADman, WATCHDOG, ALARM, (the Alarm relay
tracks the function of the Aux ReLaY A programming).

2 Each module has 4 relays. Each relay has a form C contact with each having a
rating of 10A max @ 250 VAC.

3 Control voltage is 120 VAC ± 20% or 48 - 125 VDC.

4 Accessory Bus Modules use DIN rail mounting. Connector types are
plug-in-Phoenix . Four form C contacts use 12 pin connector part # 1835193.
Power is 5 pin part # 1835122.. Communication.. is 3 pin. Part # 1835106.

5 Communication Cable is C-H style 2A957805G01 or Belden 9463 cable.

6 Set switch to corresponding adress(001 through 004) programmed via the Digitrip
front panel. See Appendix D-17.

7 Set switch up to insert 100 ohm terminating resistor on last relay of network.

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I.L. 70C1036H05 Page 83

Appendix I MODBUS TRANSLATOR Wiring

The Digitrip 1150 in a Magnum Circuit Breaker can communicate its data using Modbus RTU protocol by
employing a mMINT device to act as a translator from INCOM communicationto MODBUS
communications. A Modbus master device is shown wired to gather data and can provide control
logic to open and close circuit breakers.

The mMINT module CAT # mMINT use DIN rail mounting. Connector types are
plug-in-Phoenix. . Power is 5 pin. INCOM network uses a 3 pin. The RS-485 MODBUS
uses a 4 pin connector which consist of signals A, B, COMmon and SHielD.

Three Baud rates of 1200, 9600 or 19200 are selectable via programming switch for the
MODBUS network. The INCOM Baud rate is fixed at 9600 Baud.

4
COM Inv Non Invert Input
A B COM SHD

Modbus Master mMINT

4

1 3
2

B-1 B-2 B-1 B-2

Digitrip 11 50
Digitrip 11 50

Magnum Circuit Breaker Magnum Circuit Breaker

Notes: 1 Control voltage is 120 VAC ± 20% or 48 - 125VDC.

2 Communication Cable is C-H style 2A957805G01 or Belden 9463 cable.
3 The overall network will support up to 32 devices with any addresses from 1 to 247
4 Terminating resistor is 121 ohm 1 watt. Use the mMINT switches to insert these terminators at the mMINT device.

Effective 10/2004
Page 84 I.L. 70C1036H05

This instruction booklet is published solely for information

purposes and should not be considered all inclusive. If
further information is required, consult Cutler-Hammer, Inc.

The sale of the product shown in this literature is subject

to the terms and conditions outlined in appropriate Cutler-
Hammer, Inc., selling policies or other contractual agree-
ments between the parties. This literature is not intended
to and does not enlarge or add to any such contract. The
sole source governing the rights and remedies of any
purchaser of this equipment is the contract between the
purchaser and Cutler-Hammer, Inc.

NO WARRANTIES, EXPRESSED OR IMPLIED, INCLUD-

ING WARRANTIES OF FITNESS FOR A PARTICULAR
PURPOSE OR MERCHANTABILITY, OR WARRANTIES
ARISING FROM THE COURSE OF DEALING OR USAGE
OF TRADE, ARE MADE REGARDING THE INFORMA-
TION, RECOMMENDATIONS, AND DESCRIPTIONS
CONTAINED HEREIN.

In no event will Cutler-Hammer, Inc., be responsible to the

purchaser or user in contract, in tort (including negligence),
strict liability, or otherwise for any special, indirect, inci-
dental, or consequential damage or loss whatsoever,
including, but not limited to, damage or loss of the use of
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facilities, or claims against the purchaser or user by its
customers resulting from the use of the information,
recommendations, and descriptions contained herein.

Eaton Corporation
Eaton Electrical
Cutler-Hammer Business Unit
1000 Cherrington Parkway
Moon Township, PA 15108-4312 USA
Telephone: 1-800-525-2000
www.eatonelectrical.com

© 2004 Eaton Corporation

All Rights Reserved
Effective: October 2004
Printed in USA

Effective 10/2004