GE MicroVersaTrip Plus User manual

g
MicroVersaTrip Plus™ and
MicroVersaTrip PM™ Trip Units
for Type AKR Low-Voltage Power Circuit Brea ers
Power Brea ® Insulated-Case Circuit Brea ers
Power Brea ® II Insulated-Case Circuit Brea ers
R-Frame Molded-Case Circuit Brea ers
Low-Voltage Power Circuit Brea er Conversion Kits
User’s Guide
GEH–6273E

i
GEH–6273E
WARNINGS, CAUTIONS, AND NOTES
AS USED IN THIS PUBLICATION
WARNINGS
Warning notices are used in this publication to emphasize that hazardous voltages, cur-
rents, 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.
CAUTIONS
Caution notices are used for situations in which equipment might be damaged if care is
not taken.
NOTES
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 pos-
sible 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 docu-
ment 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 warran-
tees of merchantability or fitness for purpose shall apply.
The following are trademarks of GE Company:
MicroVersaTrip Plus™, MicroVersaTrip PM™, Power Break®, Spectra RMS™, Epic™,
POWER LEADER™
©Copyright 1996 GE Company
All Ri
g
hts Reserved

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Table of Contents
ii
Chapter 1. Introduction
1-1 Read This First ............................................................................................................1
1-2 Product Structure ........................................................................................................1
1-3 Trip Unit Functions.....................................................................................................3
1-4 Trip Unit Catalog Numbers.........................................................................................3
1-5 Rating Plugs.................................................................................................................5
1-6 Equipment Interfaces..................................................................................................6
MicroVersaTrip Plus Trip Units............................................................................6
Neutral Current Sensors........................................................................................6
MicroVersaTrip PM Trip Units.............................................................................6
POWER LEADER Communication Network........................................................6
Voltage Inputs.......................................................................................................6
Power Requirements .............................................................................................7
1-7 Trip Unit Information.................................................................................................7
Trip Unit Label Information ................................................................................7
Function Keys........................................................................................................7
Battery Function....................................................................................................8
Liquid Crystal Display ...........................................................................................9
1-8 MicroVersaTrip Plus and MicroVersaTrip PM Accuracies..........................................9
Chapter 2. Setup Mode
2-1 Overview ....................................................................................................................10
2-2 Operating Modes....................................................................................................... 10
2-3 Setup Mode Operation.............................................................................................. 10
Long-Time Pickup .............................................................................................. 16
Long-Time Delay................................................................................................. 16
Short-Time Pickup .............................................................................................. 16
Short-Time Delay ................................................................................................ 17
Instantaneous Pickup.......................................................................................... 18
High-Range Instantaneous Overcurrent Protection ........................................... 18
Ground-Fault Pickup........................................................................................... 18
Ground-Fault Delay............................................................................................. 19
Voltage-Unbalance Relay Pickup ........................................................................ 19
Voltage-Unbalance Relay Delay .......................................................................... 20
Current-Unbalance Relay Pickup........................................................................ 20
Current-Unbalance Relay Delay.......................................................................... 20
Undervoltage Relay Pickup................................................................................. 20
Undervoltage Relay Zero-Volt Trip Enable......................................................... 20
Undervoltage Relay Delay................................................................................... 21
Overvoltage Relay Pickup.................................................................................... 21
Overvoltage Relay Delay...................................................................................... 21
Power-Reversal Relay Pickup............................................................................... 21

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Table of Contents
iii
Power Direction Setup......................................................................................... 21
Power-Reversal Relay Delay................................................................................. 21
Rating Plug Current Setting................................................................................ 22
Potential Transformer Primary Voltage.............................................................. 22
Potential Transformer Connection..................................................................... 22
Power Demand Intervals..................................................................................... 23
Communication Address .................................................................................... 23
Accessory Configuration Setup (RMS9D Series Trip Units Only) ...................... 23
Chapter 3. Metering Mode
3-1 Overview ....................................................................................................................25
3-2 Metering Mode Operation ........................................................................................ 25
Current................................................................................................................ 27
Voltage ................................................................................................................ 27
Energy................................................................................................................. 27
Total Real Power................................................................................................. 27
Total Aggregate Power........................................................................................ 28
Power Demand.................................................................................................... 28
Peak Power Demand ........................................................................................... 28
Frequency............................................................................................................ 28
Chapter 4. Status Mode
4-1 Overview ....................................................................................................................29
Trip Information ................................................................................................ 29
Trip Operations Counters................................................................................... 29
4-2 Status Mode Operation.............................................................................................. 29
Normal Status Display ......................................................................................... 29
Long-Time Overcurrent Pickup Display ............................................................. 29
Trip Target and Fault Displays ........................................................................... 30
Long-Time Overcurrent Fault Display ................................................................ 30
Short-Time Overcurrent Fault Display................................................................ 30
Instantaneous Fault Display................................................................................ 30
Ground-Fault Display.......................................................................................... 31
Protective-Relay Fault Display ............................................................................. 31
Shunt Trip and Undervoltage Release Trip Displays (RMS9D Series Trip
Units Only) ................................................................................................... 31
Clearing the Trip Information............................................................................ 31
Trip Operations Counter Display ....................................................................... 31
Clearing the Trip Operations Counters.............................................................. 32

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Table of Contents
iv
Chapter 5. Maintenance and Trouble-Shooting
5-1 Trip Unit Removal and Replacement ....................................................................... 33
Power Break Insulated-Case Circuit Breakers ..................................................... 33
Power Break II Insulated-Case Circuit Breakers.................................................. 33
Type AKR Low-Voltage Power Circuit Breakers.................................................. 33
5-2 Rating Plug Removal and Replacement.................................................................... 34
5-3 Trouble-Shooting Guide............................................................................................ 34
Appendices
Catalog Numbers for RMS9C Units in AK/AKR Circuit Breakers .................................. 36
Catalog Numbers for RMS9C Units in Power Break® Circuit Breakers.......................... 37
Catalog Numbers for RMS9D Units in Power Break® II Circuit Breakers...................... 38
Trip Unit Battery Suppliers............................................................................................. 39

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
List of Figures
v
1. Front view of MicroVersaTrip PM Trip Unit (series RMS9C).................................................1
2. Front view of MicroVersaTrip PM Trip Unit (series RMS9D). ...............................................1
3. Rear view of MicroVersaTrip PM Trip Unit (series RMS9C).................................................2
4. Rear view of MicroVersaTrip PM Trip Unit (series RMS9D)..................................................2
5. Labels on front of Trip Unit....................................................................................................7
6. Function key placement on face of Trip Unit.........................................................................8
7. Liquid crystal display segments...............................................................................................9
8. Operation of FUNCTION key, showing progression among Trip Unit operating modes.... 11
9. Trip Unit setup mode programming function flow.............................................................. 12
10. Trip Unit display for long-time pickup. ................................................................................ 16
11. Time-current curve illustrating long-time pickup. ............................................................... 16
12. Trip Unit display for long-time delay.................................................................................... 16
13. Time-current curve illustrating long-time delay.................................................................... 16
14. Trip Unit display for short-time pickup coupled with long-time pickup. ............................. 17
15. Time-current curve illustrating short-time pickup................................................................ 17
16. Trip Unit display for short-time delay................................................................................... 17
17. Time-current curve for short-time delay with I2T OUT. ......................................................... 17
18. Time-current curve for short-time delay with I2T IN.............................................................. 17
19. Trip Unit display for instantaneous pickup.......................................................................... 18
20. Instantaneous overcurrent protection set point.................................................................... 18
21. Trip Unit display for ground-fault pickup. ........................................................................... 18
22. Time-current curve for ground-fault pickup........................................................................ 19
23. Trip Unit display for ground-fault delay, showing I2T out.................................................... 19
24. Time-current curve for ground-fault delay with I2T OUT. ..................................................... 19
25. Time-current curve for ground-fault delay with I2T IN.......................................................... 19
26. Trip Unit display for voltage-unbalance relay pickup........................................................... 20
27. Trip Unit display for voltage-unbalance relay delay.............................................................. 20
28. Trip Unit display for current-unbalance relay pickup. ......................................................... 20
29. Trip Unit display for current-unbalance relay delay............................................................. 20
30. Trip Unit display for undervoltage relay pickup................................................................... 20
31. Trip Unit display for undervoltage relay zero-volt trip disabled. .......................................... 20
32. Trip Unit display for undervoltage relay zero-volt trip enabled............................................ 21
33. Trip Unit display for undervoltage relay delay. .................................................................... 21
34. Trip Unit display for overvoltage relay pickup...................................................................... 21
35. Trip Unit display for overvoltage relay delay. ....................................................................... 21
36. Trip Unit display for power-reversal relay pickup. ................................................................ 21
37. Trip Unit display for power direction setup, showing line to load........................................ 21
38. Trip Unit display for power-reversal relay delay.................................................................... 22
39. Trip Unit display for rating plug current set point............................................................... 22
40. Trip Unit display for potential transformer primary voltage set point. ................................ 22

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
List of Figures
vi
41. Trip Unit display for potential transformer connection choice............................................ 23
42. Trip Unit display for power demand interval. ...................................................................... 23
43. Trip Unit display for setting communication address. ......................................................... 23
44. Logic diagram for accessory configurations.......................................................................... 23
45. Accessory configuration switch on rear of Trip Unit, showing factory settings. ................... 24
46. Setting the accessory configuration switches......................................................................... 24
47. Trip Unit metering mode function flow. .............................................................................. 25
48. Trip Unit display for current metering................................................................................. 27
49. Trip Unit display for line-to-neutral voltages. ....................................................................... 27
50. Trip Unit display for line-to-line voltages.............................................................................. 27
51. Trip Unit display for aggregate energy................................................................................. 27
52. Trip Unit display for aggregate real power........................................................................... 27
53. Trip Unit display for aggregate apparent power................................................................... 28
54. Trip Unit display for power demand. ................................................................................... 28
55. Trip Unit display for frequency............................................................................................. 28
56. Trip Unit display for normal status....................................................................................... 29
57. Trip Unit status display for long-time overcurrent pickup.................................................... 30
58. Typical fault display following a breaker trip........................................................................ 30
59. Trip Unit Status display for long-time overcurrent trip. ....................................................... 30
60. Trip Unit status display for short-time overcurrent trip........................................................ 30
61. Trip Unit status display for instantaneous overcurrent trip.................................................. 30
62. Trip Unit status display for ground-fault trip....................................................................... 31
63. Trip Unit status display for protective-relay trip. .................................................................. 31
64. Trip Unit status display for Undervoltage Release trip......................................................... 31
65. Trip Unit status display for long-time overcurrent trip counter............................................ 32
66. Removing the interchangeable rating plug. ......................................................................... 34

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
List of Tables
vii
1. Breaker type referred to by first character of Trip Unit catalog number................................3
2. Breaker frame size maximum CT referred to by second character of Trip Unit catalog
number....................................................................................................................................4
3. Installed breaker CT size referred to by third and fourth characters of Trip Unit catalog
number....................................................................................................................................4
4. Trip Unit catalog number suffixes for optional functions......................................................4
5. MicroVersaTrip PM Trip Unit suffixes for communication, metering, and relaying.............4
6. Rating plug catalog numbers..................................................................................................5
7. Protective relay and metering accuracies and resolutions. .....................................................9
8. Trip-time curves for breaker types covered in this guide. .......................................................9
9. Abbreviations used in setup procedure descriptions............................................................. 10
10. Actions of function keys in Trip Unit operating modes........................................................ 11
11. Lower-limit delays for long-time delay bands........................................................................ 16
12. Lower-limit delays for I2T OUT short-time delay bands.......................................................... 17
13. Instantaneous pickup settings for various frame sizes with and without the short-time
function................................................................................................................................. 18
14. Ground-fault pickup settings, as a function of sensor rating................................................. 18
15. Lower-limit delays for ground-fault delay bands................................................................... 19
16. Trip Unit rating plug options. .............................................................................................. 22
17. Accessory configuration switch settings, including factory defaults...................................... 24
18. Trip Unit display targets for protective relays....................................................................... 31

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Chapter 1. Introduction
1
1-1 Read This First
The MicroVersaTrip Plus™ and MicroVersaTrip
PM™ Trip Units described in this publication are
used on Power Break® and Power Break® II
insulated-case circuit breakers, Type AKR low-voltage
power circuit breakers, R-Frame molded-case circuit
breakers, and low-voltage power circuit breaker
conversion kits.
Spectra RMS™ molded-case circuit breakers use
different versions of MicroVersaTrip Plus and
MicroVersaTrip PM Trip Units that are not
interchangeable with the units described here. Refer
to GEH-5934 for information on these Trip Units.
1-2 Product Structure
MicroVersaTrip Trip Units come in two different
sizes that are not interchangeable. The larger Trip
Unit (series RMS9C) is used on Power Break circuit
breakers, Type AKR circuit breakers, and conversion
kits. The smaller Trip Unit (series RMS9D) is used
only on Power Break II circuit breakers. Each of the
two sizes is available in both MicroVersaTrip Plus
and MicroVersaTrip PM configurations. The front
views of the MicroVersaTrip PM Trip Units are
shown in Figures 1 (RMS9C) and 2 (RMS9D).
The RMS9C Trip Unit has a 36-pin rear connector,
while the RMS9D Trip Unit has a 50-pin rear con-
nector, as shown in Figures 3 and 4. These connec-
tors provide the Trip Units’ main connections to the
circuit breaker frame and to the equipment control
signals.
Both types of Trip Unit have recessed connectors in
the front panel to accept interchangeable current
rating plugs.
Both types of Trip Unit have a top-mounted 20-pin
connector that provides future access to the optional
Remote Display accessory. (
Note: this accessory is not
normally used with a Power Break II circuit breaker.)
This connector has a removable cover to protect it
when not in use.
Series RMS9D Trip Units also have a 6-position DIP
switch, not present on series RMS9C Trip Units, that
is used to configure the Power Break II integrated
accessories. This switch is located on the rear of the
unit.
Figure 1. Front view of MicroVersaTrip PM Trip Unit (series
RMS9C).
Figure 2. Front view of MicroVersaTrip PM Trip Unit (series
RMS9D).

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Chapter 1. Introduction
2
Figure 3. Rear view of MicroVersaTrip PM Trip Unit (series
RMS9C).
Figure 4. Rear view of MicroVersaTrip PM Trip Unit (series
RMS9D).
CC
CCAA AAUU UUTT TTII IIOO OONN NN::::
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.
AA
AA TT TT TT TT EE EE NN NN TT TT II II OO OO NN NN ::::
Pour retirer déclencheur, le
disjoncteur doit être en position ouverte ou
déclenchée. Les disjoncteurs débrochables doivent
ètre en position débrochée.
CC
CCAA AAUU UUTT TTII IIOO OONN NN::::
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.
AA
AATT TTTT TTEE EENN NNTT TTII IIOO OONN NN::::
Ne pas utiliser le disjoncteur sans son
déclencheur. Une mauvaise installation du
déclencheur peut être dangereuse.
CC
CCAA AAUU UUTT TTII IIOO OONN NN::::
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 unde-
sired tripping.
AA
AATT TTTT TTEE EENN NNTT TTII IIOO OONN NN::::
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.
NN
NNOO OOTT TTEE EE::::
Trip Units as received may have settings that
are undesirable for the specific application. Ensure
that settings are appropriately adjusted before ener-
gizing.
NN
NNOO OOTT TTEE EE::::
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.

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Chapter 1. Introduction
3
1-3 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:
• High-range (fixed) instantaneous overcurrent
protection
• Short-time protection, with or without I2T
• Ground-fault protection, with or without I2T
• Defeatable ground fault, with or without I2T
• Zone-selective interlock, with ground fault only
or with both ground fault and short time
protection
Additional optional functions available only with
MicroVersaTrip PM Trip Units are as follows:
• Available configurations
– Communication and metering
– Communication and protective relaying
– 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
NN
NNOO OOTT TTEE EE::::
MicroVersaTrip PM style Trip Units require
external +24 Vdc control power.
NN
NNOO OOTT TTEE EE::::
Le déclencheur de type MicroVersaTrip PM
necessite l’utilisation d’une alimentation extérieure
24 Vcc.
1-4 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. Catalog number keys
are found in Appendix 1 for AKR breakers,
Appendix 2 for RMS9C Trip Units in Power Break®
breakers, and in Appendix 3 for RMS9D Trip Units
in Power Break® II breakers. A208LIPMR is an
example of a valid catalog number.
The first character of each catalog number defines
the type of breaker for which it is configured, as
listed in Table 1.
CC
CChh hhaa aarr rraa aacc cctt ttee eerr rr BB BBrr rree eeaa aakk kkee eerr rr TT TTyy yypp ppee ee TT TTrr rrii iipp pp UU UUnn nnii iitt tt
A AKR RMS9C
B Power Break II RMS9D
C Power Break RMS9C
Table 1. Breaker type referred to by first character of Trip Unit
catalog number.
The second character of the catalog number indi-
cates the highest rated phase current transformer
(CT) sensor allowed for that breaker frame, as listed
in Table 2.

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Chapter 1. Introduction
4
CC
CChh hhaa aarr rraa aacc cctt ttee eerr rr
MM
MMaa aaxx xxii iimm mmuu uumm mm AA AAlllllllloo ooww wwaa aabb bbllllee ee
CC
CCTT TT
2 2000 A
3 2500/3000/3200 A
4 4000 A
5 5000 A
Table 2. Breaker frame size maximum CT referred to by second
character of Trip Unit catalog number.
The third and fourth characters of the catalog
number indicate the CT that is actually installed in
the breaker, as listed in Table 3. The table also indi-
cates whether each CT is available with only RMS9C
Trip Units or with both types.
CC
CChh hhaa aarr rraa aacc cctt ttee eerr rrss ss CC CCTT TT SS SSii iizz zzee ee TT TTrr rrii iipp pp UU UUnn nnii iitt tt SS SSee eerr rrii iiee eess ss
01 150 A RMS9C
02 200 A both
03 225 A RMS9C
04 400 A both
06 600 A RMS9C
08 800 A both
10 1000 A both
16 1600 A both
20 2000 A both
25 2500 A both
30 3000 A both
32 3200 A RMS9C
40 4000 A both
50 5000 A RMS9C
Table 3. Installed breaker CT size referred to by third and
fourth characters of Trip Unit catalog number.
The fifth character of the catalog number is the let-
ter 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 4. These
suffixes are valid for both MicroVersaTrip Plus and
MicroVersaTrip PM style Trip Units. They are
appended from left to right in the order given.
SS
SSuu uuff ffff ffii iixx xx PP PPrr rroo oott ttee eecc cctt ttii iivv vvee ee FF FFuu uunn nncc cctt ttii iioo oonn nn
S Short-time overcurrent protection
I Instantaneous overcurrent protection
H Fixed high-range instantaneous
K Fixed high-range instantaneous (AKR-30S
only)
G Ground fault
GD Defeatable ground fault (not UL listed)
Z1 or
Z2
Zone-selective interlock:
Z1 – ground fault only
Z2 -– ground fault and short time
X Switchable instantaneous/short time and
ground fault (AKR only, not UL listed)
Table 4. Trip Unit catalog number suffixes for optional
functions.
MicroVersaTrip PM catalog numbers contain an
additional one- or two-letter suffix to indicate the
communication, metering, and relaying functions
installed, as shown in Table 5. MicroVersaTrip Plus
catalog numbers do not have this final suffix.
SS
SSuu uuff ffff ffii iixx xx FF FFuu uunn nncc cctt ttii iioo oonn nn
(none) MicroVersaTrip Plus Trip Unit
PM Metering, relaying, and communication
M Metering and communication
P Relaying and communication
Table 5. 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
B210LSIGZ1PM has the following functions:
B2 -- Trip Unit for Power Break II with maximum
CT of 2000 A
10 – breaker current sensor (CT) of 1000 A
L -- long-time overcurrent protection
S -- short-time overcurrent protection
I -- adjustable instantaneous protection
G -- ground-fault protection
Z1 – ground-fault zone-selective interlock

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Chapter 1. Introduction
5
PM -- MicroVersaTrip PM with metering, relaying,
and communication
1-5 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 either Power Break®, Power
Break® II, or Type AKR breakers are
interchangeable within the same sensor rating.
Rating plugs for Power Break, Power Break II, and
Type AKR breakers cannot be interchanged with
Spectra RMS™ MicroVersaTrip Plus and
MicroVersaTrip PM Trip Units.
A built-in rejection feature prevents the insertion of a
rating plug with an incorrect sensor rating into a
Trip Unit. Similarly, a Spectra RMS rating plug can
not be inserted into a Power Break, Power Break II,
or Type AKR breaker.
Rating plug catalog numbers are listed in Table 6.
CC
CCaa aatt ttaa aalllloo oogg gg
NN
NNuu uumm mmbb bbee eerr rr
SS
SSee eenn nnss ssoo oorr rr
RR
RRaa aatt ttii iinn nngg gg,,,,
AA
AAmm mmpp ppss ss
PP
PPlllluu uugg gg
RR
RRaa aatt ttii iinn nngg gg BB BBrr rree eeaa aakk kkee eerr rr FF FFrr rraa aamm mmee eess ss
CC
CCaa aatt ttaa aalllloo oogg gg
NN
NNuu uumm mmbb bbee eerr rr
SS
SSee eenn nnss ssoo oorr rr
RR
RRaa aatt ttii iinn nngg gg,,,,
AA
AAmm mmpp ppss ss
PP
PPlllluu uugg gg
RR
RRaa aatt ttii iinn nngg gg BB BBrr rree eeaa aakk kkee eerr rr FF FFrr rraa aamm mmee eess ss
TR1B60 60 TR16B600 600 SSD, SSF, SHD, SHF
TR1B80 80 AKR30 TR16B800 800 TC1610, THC1610
TR1B100 150 100 AKR30S, AKR30H TR16B1000 1000 AKR50S, AKR50H
TR1B125 125 Conversion Kits TR16B1100 1600 1100 TP1616, THP1616
TR1B150 150 TR16B1200 1200 Conversion Kits
TR2B100 100 SSD, SSF, SHD, SHF TR16B1600 1600
TR2B150 200 150 TP82, THP82 TR20B750 750 SSD, SSF, SHD, SHF
TR2B200 200 TC82, THC82 TR20B800 800 TC2020, THC2020
TR225B100 100 TR20B1000 1000 TC2520, THC2520
TR225B150 225 150 Conversion Kits TR20B1200 2000 1200 TP2020, THP2020
TR225B225 225 TR20B1500 1500 TP2520, THP2520
TR4B150 150 SSD, SSF, SHD, SHF TR20B1600 1600 AKRT50H
TR4B200 200 AKR30 TR20B2000 2000 Conversion Kits
TR4B225 400 225 TP84, THP84 TR25B1600 1600 SSD, SSF, SHD, SHF
TR4B250 250 TC84, THC84 TR25B2000 2500 2000 TC2525, THC2525
TR4B300 300 AKR30S, AKR30H TR25B2500 2500 TP2525, THP2525
TR4B400 400 Conversion Kits TR30B120021200 SSD, SSF, SHD, SHF
TR6B300 300 TR30B160021600 TC3030, THC3030
TR6B400 400 TR30B2000 3000 2000 TP3030, THP3030
TR6B450 600 450 Conversion Kits TR30B2500 2500 Conversion Kits
TR6B500 500 TR30B3000 3000
TR6B600 600 TR32B1200 1200
TR8B300 300 SSD, SSF, SHD, SHF TR32B1600 1600 AKR75, AKR75H
TR8B400 400 TP88, THP88 TR32B2400 3200 2400 Conversion Kits
TR8B450 450 TC88, THC88 TR32B3200 3200
TR8B500 800 500 AKR30 TR40B1600 1600 SSD, SSF, SHD, SHF
TR8B600 600 AKR30S, AKR30H TR40B2000 2000 TC4040, THC4040
TR8B700 700 AKR50S, AKR50H TR40B2500 2500 TP4040, THP4040
TR8B800 800 TR40B3000 4000 3000 AKR100
TR10B400 400 SSD, SSF, SHD, SHF TR40B360013600 Conversion Kits
TR10B600 600 TC1610, THC1610 TR40B4000 4000
TR10B800 1000 800 TP1610, THP1610 TR50B3200 3200
TR10B1000 1000 TC2510, THC2510 TR50B4000 5000 4000 AKR125
TP2510, THP2510 TR50B5000 5000
1Not for use with Type AKR breakers.
2Conversion kits only.
Table 6. Rating plug catalog numbers.

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Chapter 1. Introduction
6
1-6 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), made by secondary discon-
nect, and the neutral sensor, which uses a special
dedicated disconnect.
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 pick-
ups.
Neutral Current Sensors
CC
CCAA AAUU UUTT TTII IIOO OONN NN::::
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 dam-
age to, or malfunction of, the electrical system.
AA
AATT TTTT TTEE EENN NNTT TTII IIOO OONN NN::::
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 control power supply, and communication
connections. External +24 Vdc control power is
required for operation.
RMS9C-type MicroVersaTrip PM Trip Units require
a connection to an auxiliary switch within the
breaker that senses the breaker position. This
connection is not required for RMS9D-type
MicroVersaTrip PM Trip Units used on Power
Break® II breakers.
POWER LEADER™ Communication Networ
The POWER LEADER Communication Network
(commnet) transmits data and instructions between
the Trip Unit and an external intelligent device. The
external device may be the POWER LEADER system,
the Epic system, or a POWER LEADER Monitor.
Devices on commnet may be up to 1000 feet apart
without signal repeaters, subject to certain con-
straints. A maximum of 30 devices can be connected
without a signal repeater. Refer to GEH-5943 for
installation and operation of the POWER LEADER
system.
Commnet connections are made directly to wiring
terminations on breaker frames. All commnet con-
nections to the Trip Units are made through the 36-
pin or 50-pin plug on the Trip Unit, which mates
with a receptacle on the breaker frame. These addi-
tional connections are made to the equipment
through the secondary disconnects of the breaker.
Voltage Inputs
Voltage inputs are sensed by conventional instru-
ment 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 sens-
ing.
Each PT output feeds an individual voltage condi-
tioner that scales the nominal voltage to approxi-
mately 1.76 Vac for use by the Trip Unit.

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Chapter 1. Introduction
7
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 control 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 control power – Breakers with
MicroVersaTrip PM Trip Units are supplied
with external +24 Vdc power that, whenever
present, energizes the LCD. Some breaker
models that are configured for MicroVersaTrip
Plus Trip Units may be optionally equipped to
accept an external +24 Vdc supply.
•
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 power source and a jack. The LCD is ener-
gized when the jack is plugged into the rating
plug test receptacle.
•
Power Break® II Undervoltage Release and
Shunt Trip Accessories
– When energized, these
accessories supply +24 Vdc power to the Trip
Unit.
1-7 Trip Unit Information
Trip Unit Label Information
Following are descriptions of the various labels on
the front of the Trip Unit, as illustrated in Figure 5.
•
Extreme top -- circuit breaker series and/or
serial number of the breaker, unless it is a
replacement unit.
•
Upper-left corner – Trip Unit-series serial
number, such as RMS9C000143.
Figure 5. Labels on front of Trip Unit.
• Upper-right corner -- Trip Unit date of manufac-
ture code, such as E439=.
•
Lower-left corner -- catalog number of the Trip
Unit, such as B220LSIGPM.
•
Lower-right corner -- sensor rating of the Trip
Unit, such as SENSOR (CT) = 2000A.
•
Below battery cover -- indicates whether the unit
is MicroVersaTrip Plus or MicroVersaTrip PM.
There are several other labels on the Trip Unit that
are not generally visible when the unit is plugged
into a breaker:
•
Under battery cover – yellow caution label.
•
Side of unit -- bar-coded catalog number and
bar-coded serial number of unit.
•
Rear of unit -- yellow caution label. RMS9D-series
Trip Units also have a label to indicate which
accessory functions are activated by the rear-
panel DIP switches.
Function Keys
The Trip Unit has four function keys and a battery
enable key. These are marked FUNCTION, SELECT,
VALUE, ENTER, and BATTERY, as illustrated in Figure
6. All setup, status, and metering functions and
displays are accessed through these keys. As each set

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Chapter 1. Introduction
8
point is entered, it is stored in the Trip Unit’s non-
volatile memory, so subsequent loss of power does
not result in loss or change of any settings.
The functions of the five keys are
•FUNCTION -- selects the mode of display.
•SELECT -- chooses the next item for display.
•VALUE -- selects the phase-to-phase display or
allows changing of set points.
•ENTER -- stores set points.
•BATTERY -- powers the Trip Unit from the
internal battery.
Chapter 2 describes the operation of these keys in
detail.
Battery Function
Pressing the BATTERY key on the face of the Trip
Unit powers the unit from its internal battery. Bat-
tery power is maintained for 30 seconds after the last
key is pressed. This self-powered mode allows setting
up the Trip Unit or viewing trip targets when the
breaker is de-energized and external control power is
unavailable. All normal setup, meter, and status
functions can be performed with battery power.
The battery is intended to power the Trip Unit when
it is otherwise unpowered. At low line currents the
Trip Unit display is not active. Pressing the BATTERY
key under these conditions will not power the Trip
Unit.
Note that at temperatures above 40° C, the BATTERY
key may have to be held down for up to 5 seconds for
the Trip Unit to be powered.
Batteries
The Trip Unit uses a lithium sulfuryl chloride bat-
tery with a typical life of two years in a normally
energized breaker. Typical usage could include one
half-hour of use for first-time cold setup, 10 Trip
Unit status checks per year on a de-energized
breaker, and one or two configuration changes per
year.
The battery is
not required for proper operation or
protection of the breaker. It is not needed nor used
to store setpoints, configurations, or trip target
information. It provides a source of power to display
setpoints and trip information only if no other
source of power is available.
Battery Replacement
Replace the battery if it does not power up the Trip
Unit or if the low-battery symbol appears in the
display when the BATTERY key is pressed. Lift the
right-side tab of the battery cover on the front of the
Trip Unit to expose the 3.9 V AA lithium cell. A
suitable replacement is the Electrochem 3B24–XA,
which is available from industrial distributors. The
manufacturer’s address is listed in Appendix 4.
WW
WWAA AARR RRNN NNII IINN NNGG GG::::
Replace the battery with Electrochem
3B24–XA only. Use of a different battery may present
risk of fire, explosion, or damage to equipment.
Observe proper battery polarity when installing in
the Trip Unit battery compartment.
AA
AA TT TT TT TT EE EE NN NN TT TT II II OO OO NN NN ::::
Remplacer la batterie avec
uniquement des Electrochem 3B24–XA. L’utilisation
d’autres batteries peut présenter un risque de feu,
d’explosion ou d’endommagement du matériel.
Respecter la polarité de la batterie en l’installant
dans son logement.
WW
WWAA AARR RRNN NNII IINN NNGG GG::::
The battery may explode if mistreated.
Do not recharge, disassemble, or dispose of in fire.
Keep the battery away from children and dispose of
the used battery promptly.
AA
AATT TTTT TTEE EENN NNTT TTII IIOO OONN NN::::
La batterie peut exploser en cas de
mauvaise utilisation. Ne pas la recharger, l’ouvrir ou
la jeter dans un feu. Doit être garder hors de portée
des enfants. Une fois usée, la batterie doit être jeté
rapidement.
Figure 6. Function key placement on face of Trip Unit.

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Chapter 1. Introduction
9
Liquid Crystal Display
Figure 7 illustrates the LCD with all segments illumi-
nated. The various segments are energized in
response to conditions sensed by the Trip Unit.
1-8 MicroVersaTrip Plus and
MicroVersaTrip PM Accuracies
The accuracy data in Table 7 represent the average
expected performance of MicroVersaTrip Plus and
MicroVersaTrip PM Trip Units. These data are valid
for setup, metering, and status mode displays. These
data include the effects of Trip Unit ambient-
temperature variation from 0° C to 70° C.
All percentages are based on full-scale values. Full-
scale current is
xIn , the rating of the breaker’s rating
plug. Full-scale voltage is the potential transformer
primary voltage rating. These data do not include
the accuracy rating of any measuring instrument.
Refer to the trip-time curves listed in Table 8 for
characteristics and accuracies of overcurrent protec-
tion.
VV
VVaa aalllluu uuee ee
FF
FFuu uullllllll----SS SScc ccaa aallllee ee
AA
AAcc cccc ccuu uurr rraa aacc ccyy yy RR RRee eess ssoo oolllluu uutt ttii iioo oonn nn
Current (A, kA) ± 2% ± 0.5 digit
Voltage (V) ± 1.5% ± 0.5 digit
Energy (kWh, MWh, GWh) ± 3.5% ± 0.5 digit
Real power (kW, MW) ± 3.5% ± 0.5 digit
Total power (kVA, MVA) ± 3.5% ± 0.5 digit
Frequency (Hz) ± 1 Hz ± 1 Hz
Time delay (sec) ± 1 sec ± 1 sec
Table 7. Protective relay and metering accuracies and
resolutions.
BB
BBrr rree eeaa aakk kkee eerr rr TT TTyy yypp ppee ee
TT
TTrr rrii iipp pp----TT TTii iimm mmee ee
CC
CCuu uurr rrvv vvee eess ss
GG
GGrr rroo oouu uunn nndd dd----FF FFaa aauu uulllltt tt
CC
CCuu uurr rrvv vvee eess ss
AKR GES-9910 GES-9911
Power Break® and
R-Frame
GES-9909 GES-9911
Power Break® II GES-9989 GES-9990
Table 8. Trip-time curves for breaker types covered in this
guide.
Figure 7. Liquid crystal display segments.

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units
Chapter 2. Setup Mode
10
2-1 Overview
This chapter describes the operation of the four
function keys, set point and time-delay adjustments,
and their accuracies. The setup procedures should
only be repeated if the Trip Unit or the protection
characteristics are changed, requiring different set
points and time delays.
These procedures apply to MicroVersaTrip Plus and
MicroVersaTrip PM Trip Units. Setup programming
must be performed with the rating plug installed.
For Trip Units set up through either the POWER
LEADER™ system or the Epic MicroVersaTrip Field
Programming Unit, refer to instructions published
for those systems.
Table 9 contains a list of abbreviations used
throughout the description of the setup procedures.
AA
AAbb bbbb bbrr rr.... DD DDee eess sscc ccrr rrii iipp pptt ttii iioo oonn nn
xIn Rating plug ampere rating.
xCT Current sensor ampere rating.
xLT Lon
g
–time
(
LT
)
current settin
g
in am
p
eres.
Multiply LT set point by rating plug amperes.
xLT = (LT setpoint multiplier) x ( xIn )
H Short-time
(
ST
)
withstand ratin
g
of breaker in
amperes.
FFUNCTION key on face of Trip Unit.
SSELECT key on face of Trip Unit.
VVALUE key on face of Trip Unit.
EENTER key on face of Trip Unit.
Table 9. Abbreviations used in setup procedure descriptions.
2-2 Operating Modes
MicroVersaTrip Plus and MicroVersaTrip PM Trip
Units have three operating modes: Setup, Metering,
and Status. The effects of each of the four function
keys in each mode are listed in Table 10.
All the function keys, except for ENTER, automatically
step the Trip Unit display to the next available
option each time the key is pressed. Continued press-
ing of a key eventually loops the display back to the
initial option for that function. This is illustrated in
Figure 8 for the FUNCTION key, which shows that
repeatedly pressing this key cycles the mode among
Status, Metering, and Setup. Pressing the ENTER key
more than once has no effect.
In Setup mode, depressing the VALUE key for about 5
seconds activates a fast scan that rapidly displays
each of the available set points or time delays for
some of the trip characteristics.
2-3 Setup Mode Operation
The following instructions describe setup procedures
for all available Trip Unit functions. These are illus-
trated in Figure 9. All Trip Units provide long-time
overcurrent protection, long-time delay, and some
form of instantaneous overcurrent protection when
installed in Power Break® circuit breakers. All other
functions are optional.
If a specific set of Trip Unit functions, such as relay-
ing or short-time overcurrent protection, has not
been ordered, that function will not appear on the
Trip Unit display. Ignore setup mode instructions for
such functions.
The Trip Unit must be provided with control power
during setup. This can come from internal battery
power, from a MicroVersaTrip Portable Power Pack,
from an external +24 Vdc power supply, or by ener-
gizing the breaker to at least 20% of its sensor load.
To begin the process, press the FUNCTION key until
SETUP appears in the upper-right corner of the Trip
Unit display. Setup mode always begins with long-
time pickup. After a choice has been made for this
and each subsequent trip function, press SELECT to
advance to the next function.