GE Industrial Solutions WavePro Low-Voltage Power Circuit Breakers User Manual
g
DEH–178
MicroVersaTrip Plus™ and
MicroVersaTrip PM™ Trip Units
for WavePro™ Low-Voltage Power Circuit Breakers
User’s Guide
MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Getting Started
Since this Trip Unit is available in a variety of
configurations, please take a moment to compare the
catalog number of your purchased Trip Unit with the
catalog number key below.
Example
K 3 32 LSI GD Z1 PM R Code Description Function
K WavePro Breaker Family
8
800 A
1
1600 A
2
2000 A
3
3200 A
4
4000 A
5
5000 A
01
150 A
04
400 A
08
800 A
16
1600 A
20
2000 A
32
3200 A
40
4000 A
50
5000 A
L
Long-time
S
Short-time
I
Instantaneous
GGDGround Fault
Ground Fault (user defeatable) Ground fault protection
Z1
GF Zone-Selective Interlock
Z2
GF & ST Zone-Selective Interlock
X
Switchable Inst, ST, and GF
PMProtective Relays & Comm
Metering & Comm
R Replacement unit Ordered as Replacement
Frame Size
Installed CT
Overcurrent Protection
Optional protection
Optional features
Example – a Trip Unit with catalog number K332LSIGDZ1PMR has the following features:
• WavePro circuit breaker
• 3200 A frame
• 3200 A installed CT
• Long-time, short-time, and instantaneous overcurrent protection
• Defeatable ground-fault protection
• Ground-fault zone-selective interlock
• Protective relays, metering, and communication
• Trip Unit was ordered as a replacement
WARNINGS
CAUTIONS
NOTES
DEH–178
WARNINGS, CAUTIONS, AND NOTES
AS USED IN THIS PUBLICATION
Warning notices are used in this publication to emphasize that hazardous voltages, currents, or
other conditions that could cause personal injury exist in this equipment or may be associated with
its use.
Warning notices are also used for situations in which inattention or lack of equipment knowledge
could cause either personal injury or damage to equipment.
Caution notices are used for situations in which equipment might be damaged if care is not taken.
Notes call attention to information that is especially significant to understanding and operating the
equipment.
This document is based on information available at the time of its publication. While efforts have
been made to ensure accuracy, the information contained herein does not cover all details or
variations in hardware and software, nor does it provide for every possible contingency in
connection with installation, operation, and maintenance. Features may be described herein that
are not present in all hardware and software systems. GE Electrical Distribution & Control assumes
no obligation of notice to holders of this document with respect to changes subsequently made.
GE Electrical Distribution & Control makes no representation or warranty, expressed, implied, or
statutory, with respect to, and assumes no responsibility for the accuracy, completeness, sufficiency,
or usefulness of the information contained herein. No warrantees of merchantability or fitness for
purpose shall apply.
The following are trademarks of GE Company:
MicroVersaTrip Plus™, MicroVersaTrip PM™, WavePro™, Power+™, POWER LEADER™
©Copyright 1997 GE Company
All Rights Reserved
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MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Table of Contents
Chapter 1. Introduction
1- Product Description ..................................................................................................................................1
1-2 Trip Unit Functions ................................................................................................................................1
1-3 Trip Unit Catalog Numbers ....................................................................................................................2
1-4 Rating Plugs.............................................................................................................................................3
1-5 Equipment Interfaces..............................................................................................................................4
MicroVersaTrip Plus Trip Units ..................................................................................................... 4
Neutral Current Sensors..................................................................................................................4
MicroVersaTrip PM Trip Units.......................................................................................................4
POWER LEADER™ Communication Network..............................................................................4
Voltage Inputs..................................................................................................................................4
Power Requirements........................................................................................................................ 4
1-6 Trip Unit Information ............................................................................................................................5
Trip Unit Label Information ..........................................................................................................5
Function Keys...................................................................................................................................5
Battery Function..............................................................................................................................5
Liquid Crystal Display......................................................................................................................6
1-7 MicroVersaTrip Plus and MicroVersaTrip PM Accuracies....................................................................6
Chapter 2. Setup Mode
2-1 Overview................................................................................................................................................... 8
2-2 Operating Modes.....................................................................................................................................8
2-3 Setup Mode Operation............................................................................................................................ 8
Long-Time Pickup......................................................................................................................... 14
Long-Time Delay...........................................................................................................................14
Short-Time Pickup......................................................................................................................... 14
Short-Time Delay........................................................................................................................... 15
Instantaneous Pickup....................................................................................................................15
Ground-Fault Pickup.....................................................................................................................16
Ground-Fault Delay....................................................................................................................... 16
Voltage-Unbalance Relay Pickup.................................................................................................. 17
Voltage-Unbalance Relay Delay .................................................................................................... 17
Current-Unbalance Relay Pickup.................................................................................................. 17
Current-Unbalance Relay Delay.................................................................................................... 17
Undervoltage Relay Pickup...........................................................................................................18
Undervoltage Relay Zero-Volt Trip Enable.................................................................................. 18
Undervoltage Relay Delay............................................................................................................. 18
Overvoltage Relay Pickup.............................................................................................................. 18
Overvoltage Relay Delay................................................................................................................ 18
Power-Reversal Relay Pickup......................................................................................................... 18
Power Direction Setup................................................................................................................... 19
Power-Reversal Relay Delay........................................................................................................... 19
Rating Plug Current Setting.......................................................................................................... 19
Potential Transformer Primary Voltage ....................................................................................... 19
ii
Potential Transformer Connection...............................................................................................20
Power Demand Intervals ...............................................................................................................20
Communication Address...............................................................................................................20
Chapter 3. Metering Mode
3-1 Overview.................................................................................................................................................21
3-2 Metering Mode Operation ....................................................................................................................21
Current...........................................................................................................................................23
Voltage ...........................................................................................................................................23
Energy............................................................................................................................................23
Total Real Power............................................................................................................................23
Total Aggregate Power .................................................................................................................. 23
Power Demand...............................................................................................................................24
Peak Power Demand......................................................................................................................24
Frequency.......................................................................................................................................24
Chapter 4. Status Mode
4-1 Overview.................................................................................................................................................25
Trip Information...........................................................................................................................25
Trip Operations Counters............................................................................................................. 25
4-2 Status Mode Operation..........................................................................................................................25
Normal Status Display....................................................................................................................25
Long-Time Overcurrent Pickup Display.......................................................................................25
Trip Target and Fault Displays.....................................................................................................25
Long-Time Overcurrent Fault Display.......................................................................................... 26
Short-Time Overcurrent Fault Display..........................................................................................26
Instantaneous Fault Display ..........................................................................................................26
Ground-Fault Display.....................................................................................................................26
Protective-Relay Fault Display........................................................................................................26
Clearing the Trip Information...................................................................................................... 26
Trip Operations Counter Display .................................................................................................27
Clearing the Trip Operations Counters........................................................................................27
MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Table of Contents
Chapter 5. Maintenance and Trouble-Shooting
5-1 Trip Unit Removal and Replacement...................................................................................................28
5-2 Rating Plug Removal and Replacement...............................................................................................28
5-3 Trouble-Shooting Guide........................................................................................................................30
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MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
List of Figures
1. Front view of the MicroVersaTrip PM Trip Unit. .................................................................................................. 1
2. Labels on front of Trip Unit....................................................................................................................................5
3. Function key placement on face of Trip Unit........................................................................................................ 5
4. Liquid crystal display segments............................................................................................................................... 7
5. Operation of FUNCTION key, showing progression among Trip Unit operating modes.......................................9
6. Trip Unit setup mode programming function flow.............................................................................................10
7. Trip Unit display for long-time pickup................................................................................................................. 14
8. Time-current curve illustrating long-time pickup................................................................................................ 14
9. Trip Unit display for long-time delay. ..................................................................................................................14
10. Time-current curve illustrating long-time delay................................................................................................... 14
11. Trip Unit display for short-time pickup coupled with long-time pickup............................................................. 14
12. Time-current curve illustrating short-time pickup...............................................................................................15
13. Trip Unit display for short-time delay. ................................................................................................................. 15
14. Time-current curve for short-time delay with I
15. Time-current curve for short-time delay with I
16. Trip Unit display for instantaneous pickup. ........................................................................................................15
17. Instantaneous overcurrent protection set point...................................................................................................16
18. Trip Unit display for ground-fault pickup............................................................................................................16
19. Time-current curve for ground-fault pickup........................................................................................................ 16
20. Trip Unit display for ground-fault delay, showing I
21. Time-current curve for ground-fault delay with I
22. Time-current curve for ground-fault delay with I
23. Trip Unit display for voltage-unbalance relay pickup.......................................................................................... 17
24. Trip Unit display for voltage-unbalance relay delay.............................................................................................17
25. Trip Unit display for current-unbalance relay pickup......................................................................................... 17
26. Trip Unit display for current-unbalance relay delay............................................................................................ 18
27. TripUnit display for undervoltage relay pickup................................................................................................... 18
28. Trip Unit display for undervoltage relay zero-volt trip disabled..........................................................................18
29. Trip Unit display for undervoltage relay zero-volt trip enabled........................................................................... 18
30. Trip Unit display for undervoltage relay delay..................................................................................................... 18
31. Trip Unit display for overvoltage relay pickup..................................................................................................... 18
32. Trip Unit display for overvoltage relay delay........................................................................................................ 18
33. Trip Unit display for power-reversal relay pickup................................................................................................19
34. Trip Unit display for power direction setup, showing line to load......................................................................19
35. Trip Unit display for power-reversal relay delay................................................................................................... 19
36. Trip Unit display for rating plug current set point.............................................................................................. 19
37. Trip Unit display for potential transformer primary voltage set point................................................................19
38. Trip Unit display for potential transformer connection choice..........................................................................20
39. Trip Unit display for power demand interval.......................................................................................................20
40. Trip Unit display for setting communication address......................................................................................... 20
2
T OUT..........................................................................................15
2
T IN. ............................................................................................ 15
2
T OUT.................................................................................. 16
2
T OUT...................................................................................... 17
2
T IN. ........................................................................................ 17
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MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
List of Figures
41. Trip Unit metering mode function flow...............................................................................................................21
42. Trip Unit display for current metering.................................................................................................................23
43. Trip Unit display for line-to-neutral voltages........................................................................................................ 23
44. Trip Unit display for line-to-line voltages. ............................................................................................................23
45. Trip Unit display for aggregate energy.................................................................................................................23
46. Trip Unit display for aggregate real power...........................................................................................................23
47. Trip Unit display for aggregate apparent power..................................................................................................23
48. Trip Unit display for power demand....................................................................................................................24
49. Trip Unit display for frequency. ...........................................................................................................................24
50. Trip Unit display for normal status.......................................................................................................................25
51. Trip Unit status display for long-time overcurrent pickup...................................................................................25
52. Typical fault display following a breaker trip.......................................................................................................25
53. Trip Unit Status display for long-time overcurrent trip........................................................................................26
54. Trip Unit status display for short-time overcurrent trip....................................................................................... 26
55. Trip Unit status display for instantaneous overcurrent trip.................................................................................26
56. Trip Unit status display for ground-fault trip.......................................................................................................26
57. Trip Unit status display for protective-relay trip...................................................................................................26
58. Trip Unit status display for long-time overcurrent trip counter. ......................................................................... 27
59. Removing the interchangeable rating plug..........................................................................................................29
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MicroVersaTrip Plus™ and MicroVersaTrip® PM Trip Units
List of Tables
1. Breaker frame size maximum CT referred to by second character of Trip Unit catalog number....................... 2
2. Installed breaker CT size referred to by third and fourth characters of Trip Unit catalog number.................... 2
3. Trip Unit catalog number suffixes for optional functions..................................................................................... 2
4. MicroVersaTrip PM Trip Unit suffixes for communication, metering, and relaying. .........................................3
5. Rating plug catalog numbers..................................................................................................................................3
6. Protective relay and metering accuracies and resolutions.....................................................................................6
7. Abbreviations used in setup procedure descriptions.............................................................................................. 8
8. Comparison of Trip Unit settings abbreviations....................................................................................................8
9. Actions of function keys in Trip Unit operating modes......................................................................................... 9
10. Lower-limit delays for long-time delay bands. ......................................................................................................14
11. Lower-limit delays for I
12. Instantaneous pickup settings for various frame sizes with and without the short-time function......................16
13. Ground-fault pickup settings, as a function of sensor rating. .............................................................................. 16
14. Lower-limit delays for ground-fault delay bands. ................................................................................................. 17
15. Trip Unit rating plug options............................................................................................................................... 19
16. Trip Unit display targets for protective relays. .....................................................................................................26
2
T OUT short-time delay bands......................................................................................... 15
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MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Chapter 1. Introduction
1-1 Product Desription
The MicroVersaTrip Plus™ and MicroVersaTrip PM™
Trip Units described in this publication are used on
WavePro™ low-voltage power circuit breakers. A front view
of the MicroVersaTrip Plus Trip Unit is shown in Figure 1.
The Trip Unit has a 50-pin rear connector that provides
the Trip Unit’s main connections to the circuit breaker
frame and to the equipment control signals.
There is a recessed connector in the front panel to accept
interchangeable current rating plugs.
CAUTION: Do not attempt to operate the breaker without
its assigned Trip Unit. Installation of an incorrect Trip
Unit may result in unsafe operation of the breaker.
ATTENTION: Ne pas utiliser le disjoncteur sans son
déclencheur. Une mauvaise installation du déclencheur
peut être dangereuse.
CAUTION: Removal of the rating plug while the breaker
is carrying current reduces the breaker’s current-carrying
capacity to approximately 25% of the current sensor rating. This may result in undesired tripping.
ATTENTION: Si le calibreur est retiré alors que le
disjoncteur est sous tension, le déclencheur se régle
automatiquement à approximativement 25% du calibre
du transformateur de courant. Ceci peut entrainer un
déclenchement indésirable.
NOTE: Trip Units as received may have settings that are
undesirable for the specific application. Ensure that settings are appropriately adjusted before energizing.
Figure 1. Front view of a MicroVersaTrip Plus Trip Unit.
CAUTION: Removal of a Trip Unit from its breaker must
be performed with the breaker in the OPEN or TRIPPED
position. Draw-out breakers should be racked out first.
ATTENTION: Pour retirer déclencheur, le disjoncteur
doit être en position ouverte ou déclenchée. Les
disjoncteurs débrochables doivent ètre en position
débrochée.
NOTE: Les disjoncteurs sont livrés avec des réglages
standards qui peuvent être inadéquates pour certaines
applications. Vérifier ces réglages avant de mettre le
disjoncteur sous tension.
1-2 Trip Unit Functions
MicroVersaTrip Plus and MicroVersaTrip PM Trip Units
have specific standard and optional functions. All Trip
Units share a series of interchangeable rating plugs. The
standard functions for both types of Trip Unit are as follows:
• Protection
– Long-time protection
– Instantaneous protection
• Status
– Trip target (trip type)
– Trip information (magnitude and phase)
– Trip operations counters
• Metering display
– Phase current (selectable among phases)
The optional functions available on both types of Trip
Unit are as follows:
• Short-time protection, with or without I2T
• Ground-fault protection, with or without I2T
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MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Chapter 1. Introduction
• Defeatable ground fault, with or without I2T
• Zone-selective interlock, with ground fault only or
with both ground fault and short-time protection
• Switchable short time and instantaneous with ground
fault
Additional optional functions available only with
MicroVersaTrip PM Trip Units are as follows:
• Available configurations
– Communication and metering
– Communication, metering, and protective
relaying
• Remote communication with POWER LEADER™
communications network (commnet)
• Metering functions
– Voltage (V)
– Energy (kWh/MWh/GWh)
– Total real power (kW/MW)
– Total apparent power (kVA/MVA)
– Demand power (kW/MW)
– Peak demand power (kW/MW)
– Frequency (Hz)
• Protective relaying
– Undervoltage
– Overvoltage
– Voltage unbalance
– Current unbalance
– Power reversal
NOTE: MicroVersaTrip PM style Trip Units require
external +24 Vdc control power.
NOTE: Le déclencheur de type MicroVersaTrip PM
necessite l’utilisation d’une alimentation extérieure 24
Vcc.
1-3 Trip Unit Catalog Numbers
A simple catalog-numbering system defines all of the standard and optional Trip Unit functions for each of the two
series of Trip Units. K332LSIGDZ1R is an example of a
valid catalog number.
The first character of the catalog number, K, defines the
Trip Unit as configured for a WavePro circuit breaker.
Table 1. Breaker frame size referred to by the second character of the
The third and fourth characters of the catalog number
indicate the CT that is actually installed in the breaker, as
listed in Table 2.
Table 2. Installed breaker CT size referred to by third and fourth
The fifth character of the catalog number is the letter L,
which indicates that all Trip Units come with long-time
overcurrent protection. Additional letters are appended to
the catalog number to indicate installed protective functions, as in Table 3. These suffixes are valid for both
MicroVersaTrip Plus and MicroVersaTrip PM Trip Units.
They are appended from left to right in the order given.
Suffix Protective Function
S Short-time overcurrent protection
I Instantaneous overcurrent protection
G Ground fault
GD Defeatable ground fault (not UL listed)
Z1 orZ2Zone-selective interlock:
X Switchable instantaneous/short time and ground
Table 3. Trip Unit catalog number suffixes for optional functions.
Code
Trip Unit catalog number.
characters of Trip Unit catalog number.
Z1 – ground fault only
Z2 -– ground fault and short time
fault (not UL listed)
Breaker
Frame Size
8 800 A
1 1600 A
2 2000 A
3 3200 A
4 4000 A
5 5000 A
Code CT Size
01 150 A
04 400 A
08 800 A
16 1600 A
20 2000 A
32 3200 A
40 4000 A
50 5000 A
The second character of the catalog number indicates the
breaker frame size, as listed in Table 1.
MicroVersaTrip PM catalog numbers contain an additional one- or two-letter suffix to indicate the communication, metering, and relaying functions installed, as shown
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MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Chapter 1. Introduction
in Table 4. MicroVersaTrip Plus catalog numbers do not
have this final suffix.
Suffix Function
(none) MicroVersaTrip Plus Trip Unit
PM Metering, relaying, and communication
M Metering and communication
Table 4. MicroVersaTrip PM Trip Unit suffixes for communication,
metering, and relaying.
Finally, if the Trip Unit is ordered as a replacement, an
“R” suffix is appended to the catalog number.
For example, a Trip Unit with catalog number
K332LSIGDZ1PMR has the following functions:
K -- Trip Unit for Wave Pro circuit breaker
3 – Frame size of 3200 A
32 – breaker current sensor (CT) of 3200 A
L -- long-time overcurrent protection
Catalog
Number
TR1B60 60 TR20B750 750
TR1B80 80 TR20B800 800
TR1B100 150 100 800 TR20B1000 2000 1000 2000
TR1B125 125 TR20B1200 1200
TR1B150 150 TR20B1500 1500
TR4B150 150 TR20B1600 1600
TR4B200 200 TR20B2000 2000
TR4B225 400 225 800 TR32B1200 1200
TR4B250 250 TR32B1600 3200 1600 3200
TR4B300 300 TR32B2400 2400
TR4B400 400 TR32B3200 3200
TR8B300 300 TR40B1600 1600
TR8B400 400 TR40B2000 2000
TR8B450 450 TR40B2500 4000 2500 4000
TR8B500 800 500 800 TR40B3000 3000
TR8B600 600 1600 TR40B3600 3600
TR8B700 700 TR40B4000 4000
TR8B800 800 TR50B3200 3200
TR16B600 600 TR50B4000 5000 4000 5000
TR16B800 800 1600 TR50B5000 5000
TR16B1000 1600 1000
TR16B1100 1100
TR16B1200 1200
TR16B1600 1600
Sensor
Rating,
Amps
Plug
Rating
Breaker
Frame Size,
Amps
S -- short-time overcurrent protection
I -- adjustable instantaneous protection
GD -- defeatable ground-fault protection
Z1 – ground-fault zone-selective interlock
PM -- MicroVersaTrip PM with relaying, metering, and
communication
R – Replacement Trip Unit
1-4 Rating Plugs
Interchangeable rating plugs are used to establish or
change the current rating of the breaker. Rating plugs for
MicroVersaTrip Plus or MicroVersaTrip PM Trip Units in
WavePro breakers are interchangeable within the same
sensor rating. A built-in rejection feature prevents the
insertion of a rating plug with an incorrect sensor rating
into a Trip Unit.
Rating plug catalog numbers are listed in Table 5.
Catalog
Number
Sensor
Rating,
Amps
Plug
Rating
Breaker
Frame Size,
Amps
Table 5. Rating plug catalog numbers.
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MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Chapter 1. Introduction
1-5 Equipment Interfaces
MicroVersaTrip Plus Trip Units
MicroVersaTrip Plus Trip Units do not usually require
connections within the equipment, since all wiring is contained within the circuit breaker. The only two connections are for optional zone-selective interlock (Z1 and Z2)
and the neutral sensor. Connections are made through
the breaker’s secondary disconnect A.
Zone-selective interlocking coordinates breakers, so that
the downstream breaker is allowed the first opportunity to
clear a disturbance. The two types of available zone-selective interlocking are Z1, which reacts only to ground faults,
and Z2, which reacts to both ground faults and short-time
overcurrent pickups. Separately mounted zone-selective
interlock modules are required between upstream and
downstream breakers.
Neutral Current Sensors
CAUTION: Neutral current sensors are required for
single-phase, three-wire and three-phase, four-wire systems. When the Trip Unit is connected to a three-phase,
three-wire system, the neutral sensor terminals of the
breaker are left open. Do not short any neutral current
sensor terminals in a three-phase, three-wire system, as
this could result in damage to, or malfunction of, the
electrical system.
ATTENTION: Un transformateur de courant de neutre est
nécessaire pour les réseaux 3 phases + neutre. Si le neutre
n’est pas distribué, les bornes de neutre du déclencheur
doivent être laissées ouvertes. Ne pas les court-circuiter
(ceci peut endommager le déclencheur et entrainer un
mauvais fonctionnement du système électrique.
MicroVersaTrip PM Trip Units
In addition to the inputs received by MicroVersaTrip Plus
Trip Units, MicroVersaTrip PM Trip Units also receive
inputs from external voltage conditioners, a +24 Vdc auxiliary power supply, and communication connections.
External +24 Vdc auxiliary power is required for operation.
POWER LEADER™ Communication Network
MicroVersaTrip PM Trip Units may be integrated into a
Power Management Control System through the POWER
LEADER™ Modbus Concentrator, which collects data
from a MicroVersaTrip PM Trip Unit (a commnet device)
and communicates across the RS485 network to a remote
PC. Also, MicroVersaTrip PM Trip Units can be wired to a
POWER LEADER Modbus Monitor through a Modbus
Concentrator. The Modbus Monitor, which is mounted
either in the equipment or independently, provides a central station for viewing metering and status information
collected from multiple remote power management
devices.
Commnet connections are made directly to wiring terminations on breaker frames. All commnet connections to
the Trip Units are made through the 50-pin plug on the
Trip Unit, which mates with a receptacle on the breaker
frame. These additional connections are made to the
equipment through the secondary disconnects of the
breaker.
Voltage Inputs
Voltage inputs are sensed by conventional instrument
potential transformers(PTs). PTs have 120 Vac secondaries and must always be used in groups of three; no
open-delta connections are permitted. PT primaries are
connected either line-to-line or line-to-neutral, as required.
PTs may be used for other monitoring functions, subject to
reasonable burden limitations. Note that PTs must be
connected in a specific sequence to ensure proper phase
relations and power-flow sensing.
Each PT output feeds an individual voltage conditioner
that scales the nominal voltage to approximately 1.76 Vac
for use by the Trip Unit.
Power Requirements
A small amount of power is necessary to energize the liquid
crystal display (LCD) during setup, for viewing breaker
status, and for metering displays. MicroVersaTrip PM Trip
Units require external +24 Vdc auxiliary power for proper
operation. The four sources of such power are the
following:
• Flow of current -- Breaker current sensors provide sufficient power to energize the LCD when at least 20% of
the sensor’s ampere rating is flowing.
• +24 Vdc Auxilliary Power – Breakers with MicroVersaTrip PM Trip Units are supplied with external +24
Vdc power that, whenever present, energizes the
LCD.
• Internal Battery Power – The Trip Unit has an internal
battery that powers the unit temporarily when the
BATTERY key on the display is pressed. Battery power
automatically turns off 30 seconds after the last keypad press. The battery power supply is disabled when
any current is sensed through the current sensors.
• MicroVersaTrip Portable Power Pack -- The
MicroVersaTrip Portable Power Pack contains a dc
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