ABB MicroVersaTrip Plus(tm) and MicroVersaTrip PM (tm) Trip Units User's guide

GEH–6273E g

MicroVersaTrip Plus™ and

MicroVersaTrip PM™ Trip Units

for Type AKR Low-Voltage Power Circuit Breakers

Power Break

®

Insulated-Case Circuit Breakers

Power Break

®

II Insulated-Case Circuit Breakers

R-Frame Molded-Case Circuit Breakers

Low-Voltage Power Circuit Breaker Conversion Kits

User’s Guide

GEH–6273E

WARNINGS, CAUTIONS, AND NOTES

AS USED IN THIS PUBLICATION

WARNINGS

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.

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 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™, Power Break®, Spectra RMS™, Epic™,

POWER LEADER™

©Copyright 1996 GE Company

All Rights Reserved i

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units

Table of Contents

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 ii


Table of Contents

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 iii


Table of Contents

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 iv


List of Figures

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 v


List of Figures

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 vi


List of Tables

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 vii



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 connector, as shown in Figures 3 and 4. These connectors 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).

1



C A U T O N must be performed with the breaker in the OPEN or

TRIPPED position. Draw-out breakers should be racked out first.

disjoncteur doit être en position ouverte ou déclenchée. Les disjoncteurs débrochables doivent

ètre en position débrochée.

C AU T O N:::: 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.

A TT E NT O N:::: Ne pas utiliser le disjoncteur sans son déclencheur. Une mauvaise installation du déclencheur peut être dangereuse.

Figure 3. Rear view of MicroVersaTrip PM Trip Unit (series

RMS9C).

C A U T O N:::: 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.

T EN T disjoncteur est sous tension, le déclencheur se régle automatiquement à approximativement 25% du calibre du transformateur de courant. Ceci peut entrainer un déclenchement indésirable.

Figure 4. Rear view of MicroVersaTrip PM Trip Unit (series

RMS9D).

N O T E:::: Trip Units as received may have settings that are undesirable for the specific application. Ensure that settings are appropriately adjusted before energizing.

N O TE standards qui peuvent être inadéquates pour certaines applications. Vérifier ces réglages avant de mettre le disjoncteur sous tension.

2



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 I 2 T

• Ground-fault protection, with or without I 2 T

• Defeatable ground fault, with or without I 2 T

• 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

L E A D E R ™ c o m m u n i c a t i o n s n e t w o r k

(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

N O TE external +24 Vdc control power.

N O TE 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.

C h

A

B

C a errrr Brrrreee a k errrr T p e

AKR

Power Break II

Power Break

U niiiitttt

RMS9C

RMS9D

RMS9C

Table 1. Breaker type referred to by first character of Trip Unit catalog number.

The second character of the catalog number indicates the highest rated phase current transformer

(CT) sensor allowed for that breaker frame, as listed in Table 2.

3



C h

2

3 a errrr

4

5

M a m u

C T o w a b

2000 A

2500/3000/3200 A

4000 A

5000 A

Table 2. Breaker frame size maximum CT referred to by second character of Trip Unit catalog number.

S u

S

I otttteee cttttiiiivvvveee F u n cttttiiiio

Short-time overcurrent protection

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

X

Zone-selective interlock:

Z1 – ground fault only

Z2 -– ground fault and short time

Switchable instantaneous/short time and ground fault (AKR only, not UL listed)

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 indicates whether each CT is available with only RMS9C

Trip Units or with both types.

30

32

40

50

10

16

20

25

C haa a errrrssss C

01

02

Siiiizzzzeee

150 A

200 A

T

03

04

06

08

225 A

400 A

600 A

800 A

1000 A

1600 A

2000 A

2500 A

3000 A

3200 A

4000 A

5000 A

U n essss

RMS9C both

RMS9C both

RMS9C both both both both both both

RMS9C both

RMS9C

Table 4. Trip Unit catalog number suffixes for optional

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 u

(none)

PM

M

P functions.

F u n o n

MicroVersaTrip Plus Trip Unit

Metering, relaying, and communication

Metering and communication

Relaying and communication

Table 5. MicroVersaTrip PM Trip Unit suffixes for communication, metering, and relaying.

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 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 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.

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

4



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.

C attttaa

N u m b o g

TR1B60

TR1B80

TR1B100

TR1B125

TR1B150

TR2B100

TR2B150

TR2B200

TR225B100

TR225B150

TR225B225

TR4B150

TR4B200

TR4B225

TR4B250

TR4B300

TR4B400

TR6B300

TR6B400

TR6B450

TR6B500

TR6B600

TR8B300

TR8B400

TR8B450

TR8B500

TR8B600

TR8B700

TR8B800

TR10B400

TR10B600

TR10B800

TR10B1000

S en

R a n g,,,,

A m

150

200

225

400

600

800

1000

1 Not for use with Type AKR breakers.

2

Conversion kits only.

R a u g n g

400

300

400

450

500

150

200

225

250

300

150

200

100

150

225

60

80

100

125

150

100

600

300

400

450

500

600

700

800

400

600

800

1000

Brrrreee a k errrr F a m

AKR30

AKR30S, AKR30H

Conversion Kits

SSD, SSF, SHD, SHF

TP82, THP82

TC82, THC82

Conversion Kits

SSD, SSF, SHD, SHF

AKR30

TP84, THP84

TC84, THC84

AKR30S, AKR30H

Conversion Kits

Conversion Kits

SSD, SSF, SHD, SHF

TP88, THP88

TC88, THC88

AKR30

AKR30S, AKR30H

AKR50S, AKR50H

SSD, SSF, SHD, SHF

TC1610, THC1610

TP1610, THP1610

TC2510, THC2510

TP2510, THP2510

Table 6. Rating plug catalog numbers.

C a

N u m b o g

TR16B600

TR16B800

TR16B1000

TR16B1100

TR16B1200

TR16B1600

TR20B750

TR20B800

TR20B1000

TR20B1200

TR20B1500

TR20B1600

TR20B2000

TR25B1600

TR25B2000

TR25B2500

TR30B1200

2

TR30B1600 2

TR30B2000

TR30B2500

TR30B3000

TR32B1200

TR32B1600

TR32B2400

TR32B3200

TR40B1600

TR40B2000

TR40B2500

TR40B3000

TR40B3600 1

TR40B4000

TR50B3200

TR50B4000

TR50B5000

S en

R n g,,,,

A m

1600

2000

2500

3000

3200

4000

5000 u g

R n g

1600

2000

1600

2000

2500

1200

1600

2000

2500

3000

600

800

1000

1100

1200

1600

750

800

1000

1200

1500

1200

1600

2400

3200

1600

2000

2500

3000

3600

4000

3200

4000

5000


SSD, SSF, SHD, SHF

TC1610, THC1610

AKR50S, AKR50H

TP1616, THP1616

Conversion Kits

SSD, SSF, SHD, SHF

TC2020, THC2020

TC2520, THC2520

TP2020, THP2020

TP2520, THP2520

AKRT50H

Conversion Kits

SSD, SSF, SHD, SHF

TC2525, THC2525

TP2525, THP2525

SSD, SSF, SHD, SHF

TC3030, THC3030

TP3030, THP3030

Conversion Kits

AKR75, AKR75H

Conversion Kits

SSD, SSF, SHD, SHF

TC4040, THC4040

TP4040, THP4040

AKR100

Conversion Kits

AKR125

5



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 disconnect, 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 pickups.

Neutral Current Sensors

C A U T O N single-phase, three-wire and three-phase, four-wire systems. When the Trip Unit is connected to a threephase, three-wire system, the neutral sensor terminals of the breaker are left open. Do not short any neutral current sensor terminals in a threephase, three-wire system, as this could result in damage to, or malfunction of, the electrical system.

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 d é c l e n c h e u r e t e n t r a i n e r u n m a u v a i s 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 Network

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 constraints. 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 connections to the Trip Units are made through the 36pin or 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-toneutral, 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.

6



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 energized 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 manufacture 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 rearpanel 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

7



Figure 6. Function key placement on face of Trip Unit.

point is entered, it is stored in the Trip Unit’s nonvolatile 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.

•

B A T T E R Y

-- powers the Trip Unit from the internal battery.

Chapter 2 describes the operation of these keys in detail.

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.

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.

Battery Function

Pressing the

BATTERY

key on the face of the Trip

Unit powers the unit from its internal battery. Battery 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.

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.

N G:::: 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.

T T N TIIIIO 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.

Batteries

The Trip Unit uses a lithium sulfuryl chloride battery with a typical life of two years in a normally

8



Liquid Crystal Display

Figure 7 illustrates the LCD with all segments illuminated. 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 ambienttemperature variation from 0

°

C to 70

°

C.

All percentages are based on full-scale values. Fullscale 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 protection.

V a u e

Current (A, kA)

Voltage (V)

Energy (kWh, MWh, GWh)

Real power (kW, MW)

Total power (kVA, MVA)

Frequency (Hz)

Time delay (sec)

F u caa

A cccc a cyyyy R esssso

± 2%

± 1.5% o n

± 0.5 digit

± 0.5 digit

± 3.5%

± 3.5%

± 3.5%

± 1 Hz

± 1 sec

± 0.5 digit

± 0.5 digit

± 0.5 digit

± 1 Hz

± 1 sec

Table 7. Protective relay and metering accuracies and resolutions.

Brrrreee a k errrr T p e

AKR

Power Break® and

R-Frame

Power Break® II

C u m e

GES-9910

GES-9909 o u n d

C u

F a

GES-9911

GES-9911

GES-9989 GES-9990

Table 8. Trip-time curves for breaker types covered in this guide.

Figure 7. Liquid crystal display segments.

9



2-1 Overview 2-2 Operating Modes

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.

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 pressing 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.

A bb D essssccc o n xIn Rating plug ampere rating.

xCT Current sensor ampere rating.

xLT Long–time (LT) current setting in amperes.

Multiply LT set point by rating plug amperes.

xLT = (LT setpoint multiplier) x (xIn)

H Short-time (ST) withstand rating of breaker in amperes.

F

S

V

E

FUNCTION

SELECT

VALUE

ENTER

key on face of Trip Unit.




Table 9. Abbreviations used in setup procedure descriptions.

2-3 Setup Mode Operation

The following instructions describe setup procedures for all available Trip Unit functions. These are illustrated 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 relaying 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 energizing 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 longtime pickup. After a choice has been made for this and each subsequent trip function, press

SELECT t o advance to the next function.

10

K eyyyy

FUNCTION

SELECT

VALUE

ENTER


Chapter 2. Setup Mode m b

F

S

V

E

S u p

U n O p

M etttteee n g M d e n g

Select one of three modes: Setup, Metering, Status

Select next programming display

Display next set point or timedelay value

Store set point or time-delay value into memory

Select next metering display Select next status display

Display next phase value

No effect

No effect

No effect

Table 10. Actions of function keys in Trip Unit operating modes.

Figure 8. Operation of FUNCTION key, showing progression among Trip Unit operating modes.

Set points are entered into memory in three steps: display, select, and activate, as described below:

1

VALUE

key until the desired set point is displayed flashing on the LCD.

2

ENTER

key to select this set point. The displayed value stops flashing and the

SETUP icon flashes on the LCD. This indicates that the value has been stored in memory but is not yet active. If a new set point is displayed but not selected by pressing the

ENTER

key (set point value still flashing), then the displayed set point is not entered into memory and the original value is maintained. Multiple set point changes can be made in this fashion without changing the active settings. For each of these changes, the

SETUP

icon continues to flash.

3

F U N C T I O N

key to activate these settings in the Trip Unit. The

SETUP

icon no longer flashes, which indicates that any selected settings are also currently active. The

F U N C T I O N

key should always be pressed following set point changes to ensure that the active settings match the stored settings.

The set point change steps are summarized as follows:

• Display set point – Press the

VALUE

key until the desired setting is flashing.

• Select set point – Press the

ENTER

key; the setting stops flashing and the

S E T U P

icon starts flashing.

• Activate set points – Press the

FUNCTION

key to activate the settings; the

SETUP

icon stops flashing.

Always confirm settings on the Trip Unit after making changes by exiting and re-entering Setup mode and rechecking each changed setting.

11



Figure 9. Trip Unit setup mode programming function flow.

12



Figure 9. Trip Unit setup mode programming function flow (continued).

13




14




15



Long-Time Pickup

The first setup-mode display is always the long-time pickup setpoint, as illustrated in Figure 10. This set point establishes the breaker’s nominal ampere rating, xLT, as a fraction of the rating plug value, xIn

( xLT = LT multiplier x xIn). Press the

VALUE

key to scroll through the available choices. Press

ENTER

to store the desired set point.

in Table 11. Figure 13 illustrates the effect of this delay on trip time. Press the

V A L U E

key to cycle through the four choices of time-delay bands. Press

ENTER

to store the desired value.

Figure 10. Trip Unit display for long-time pickup.

The choices for UL breakers are 0.50 to 1.00 times xln in steps of 0.05. The pickup value tolerance band is 0% to +20% of the set point.

The choices for ANSI breakers are 0.50 to 1.10 times xln, in steps of 0.05. The pickup value is defined for

−1

0% to +10% of the set point.

Figure 11 illustrates the long-time pickup settings.

Figure 12. Trip Unit display for long-time delay.

B a n d D

1

2

3

4 ayyyy,,,, sssseee c

2.4

4.9

9.8

20

Table 11. Lower-limit delays for long-time delay bands.

Figure 13. Time-current curve illustrating long-time delay.

Figure 11. Time-current curve illustrating long-time pickup.

Long-Time Delay

The Trip Unit display for long-time delay is illustrated in Figure 12. This function allows normal momentary overloads without nuisance tripping.

The time delays at the lower limit of the bands at

600% of the long-time current setting, xLT, are listed

Short-Time Pickup

The short-time pickup function establishes the current at which short-time trip is activated. Short-time pickup is coupled with long-time pickup and the choices of pickup settings are from 1.5 to 9.0 times the long-time setting, xLT, in steps of 0.5 xLT. The

Trip Unit display is illustrated in Figure 14.

16



Figure 14. Trip Unit display for short-time pickup coupled with long-time pickup.

Figure 16. Trip Unit display for short-time delay.

The time-current curve for short-time pickup is shown in Figure 15.

B a n d

1

2

3 m e D ayyyyssss,,,, sssseee c

0.10

0.21

0.35

Table 12. Lower-limit delays for I2T OUT short-time delay bands.

Figure 15. Time-current curve illustrating short-time pickup.

Short-Time Delay

The Trip Unit display for short-time delay is shown in Figure 16. This function delays the breaker trip on a short-time trip. The choices of time-delay bands are listed in Table 12. The delay with

I2T IN

is for a current of 600% of xLT at the lower limit of the band. The delay with

I2T OUT

is for the lower limit of each band.

On ANSI Trip Units ordered with the user-selectable, switchable instantaneous overcurrent and groundfault option, “X,” an additional value of

OFF

appears at the end of the delay band settings. Choosing

OFF disables short-time protection. The short-time

OFF band is interlocked with instantaneous pickup, so that only one function can be turned off at a time.

The I2T OUT function, illustrated in Figure 17, establishes a constant time delay.

I2T IN

biases the delay with a constant slope, as shown in Figure 18.

Figure 17. Time-current curve for short-time delay with I2T OUT .

Figure 18. Time-current curve for short-time delay with I2T IN .

17



Instantaneous Pickup

Instantaneous overcurrent protection, with Trip Unit display illustrated in Figure 19, causes an immediate breaker trip when the chosen current level is reached. The pickup value may be set in steps of 0.5

xIn from 1.5 xIn to a maximum dependent on the frame size and the presence of the short-time function, as listed in Table 13.

Note the difference from short-time pickup, which is based on a multiple of x L T . The time-current characteristic is shown in Figure 20.

the listing of numerical values. Choose this setting to disable instantaneous protection. The instantaneous

OFF

selection is interlocked with short-time pickup, so that only one function can be turned off at a time.

High-Range Instantaneous Overcurrent

Protection

High-range instantaneous overcurrent protection has a fixed trip setting equal to the breaker frame’s short-time withstand rating, H, with pickup tolerance

+0%, –20%. When this option is installed, skip programming of instantaneous pickup and go on to the next function by pressing

SELECT

.

Figure 19. Trip Unit display for instantaneous pickup.

Ground-Fault Pickup

The trip unit display for ground-fault pickup is shown in Figure 21. This function sets the pickup current for ground-fault protection. The available settings are listed in Table 14 as multiples of xCT the current sensor rating, in steps of 0.01 xCT. The maximum value is limited to 1200 A. Figure 22 illustrates the time-current curve for ground-fault pickup.

Figure 21. Trip Unit display for ground-fault pickup.

Figure 20. Instantaneous overcurrent protection set point.

a m M ax A m

R n g

2000

3200

4000

5000

S ettttp o h o utttt SSS T

1.5–10.0 xIn

1.5–10.0 xIn

1.5–9.0 xIn

1.5–7.0 xIn

S ettttp o h SSS T

1.5–15.0 xIn

1.5–13.0 xIn

1.5–9.0 xIn

1.5–7.0 xIn

Table 13. Instantaneous pickup settings for various frame sizes with and without the short-time function.

On Trip Units with the user-selectable switchable instantaneous overcurrent and ground-fault option,

X, an additional value of

OFF

appears at the end of

S en

150–2000

2500–3200

4000

S etttt P o

0.20–0.60

0.20–0.37

0.20–0.30

Table 14. Ground-fault pickup settings, as a function of sensor rating.

18



B a n d T m D ellllaa c

OFF

1

Disabled

0.10

2

3

0.21

0.35

Table 15. Lower-limit delays for ground-fault delay bands.

Figure 22. Time-current curve for ground-fault pickup.

Ground-Fault Delay

This function sets the delay before the breaker trips when the ground-fault pickup current has been detected. The Trip Unit display is shown in Figure

23. The choices are listed in Table 15. The delay for

I2T OUT is at the lower limit of each band. The delay for

I2T IN

is at 200% of the pickup setting at the lower limit of the band.

The

I2T OUT

function establishes a constant time delay, as shown in Figure 24. I2T IN biases the delay with a constant slope, as shown in Figure 25.

With the X or GD options (switchable ground fault), an

OFF

selection appears as an additional time-delay set point. Selecting

OFF

disables ground-fault protection.

Figure 24. Time-current curve for ground-fault delay with I2T

OUT .

Figure 25. Time-current curve for ground-fault delay with I2T IN .

Figure 23. Trip Unit display for ground-fault delay, showing I2T out.

Voltage-Unbalance Relay Pickup

This function compares the highest or lowest phase voltage with the average of all three phases and initiates a trip if the difference exceeds the set point.

The true rms voltage is computed for each phase.

The range of set points is from 10 to 50% of the unbalance, with an increment of 1%. The Trip Unit display is shown in Figure 26.

19



Figure 26. Trip Unit display for voltage-unbalance relay pickup.

Figure 29. Trip Unit display for current-unbalance relay delay.

Voltage-Unbalance Relay Delay

This function sets the delay time before a voltageunbalance trip occurs. The range of delays is 1 to 15 seconds, in steps of 1 second. Choosing

OFF

disables voltage-unbalance protection. The Trip Unit display is shown in Figure 27.

Undervoltage Relay Pickup

This function measures the true rms voltage in all phases and initiates a trip if any phase voltage drops below the set point. The range of set points is 50 to

90% of the nominal voltage, with an increment of

1%. The Trip Unit display is shown in Figure 30.

Figure 27. Trip Unit display for voltage-unbalance relay delay.

Figure 30. Trip Unit display for undervoltage relay pickup.

Current-Unbalance Relay Pickup

This function compares the true RMS current in the highest or lowest phase with the average of all three phases and initiates a trip if the difference exceeds the set point. The range of set points is 10 to 50% of the unbalance, with an increment of 1%. The Trip

Unit display is shown in Figure 28.

Undervoltage Relay Zero-Volt Trip Enable

This function determines if the relay trips when all three phase voltages drop to zero volts. The Trip

Unit display for zero-volt trip disabled is shown in

Figure 31. The Trip Unit display for zero-volt trip enabled is shown in Figure 32.

Figure 28. Trip Unit display for current-unbalance relay pickup.

Figure 31. Trip Unit display for undervoltage relay zero-volt trip disabled.

Current-Unbalance Relay Delay

This function sets the delay time before a currentunbalance trip occurs. The range of delays is 1 to 15 seconds, in steps of 1 second. Choosing

OFF

disables current-unbalance protection. The Trip Unit display is shown in Figure 29.

20



Figure 32. Trip Unit display for undervoltage relay zero-volt trip enabled.

Figure 35. Trip Unit display for overvoltage relay delay.

Undervoltage Relay Delay

This function sets the delay time before an undervoltage trip occurs. The range of delays is 1 to 15 seconds, in steps of 1 second. Choosing

OFF

disables undervoltage protection. The Trip Unit display is shown in Figure 33.

Power-Reversal Relay Pickup

This function measures the direction of power flow through the breaker and initiates a trip if a sufficient magnitude of reverse power is detected. The range of set points is 10 kW to 990 kW, in steps of 10 kW. The

Trip Unit display is shown in Figure 36.

Figure 36. Trip Unit display for power-reversal relay pickup.

Figure 33. Trip Unit display for undervoltage relay delay.

Overvoltage Relay Pickup

This function measures the true rms voltage in all phases and initiates a trip if any phase voltage exceeds the set point. The range of set points is 110 to 150% of the nominal voltage, with an increment of 1%. The Trip Unit display is shown in Figure 34.

Power Direction Setup

This function selects the normal power flow direction for the breaker, either from line to load or from load to line. Figure 37 shows the setup display for normal power flow of line to load. This direction setup also affects the sign of the normal power metering displays.

Figure 34. Trip Unit display for overvoltage relay pickup.

Figure 37. Trip Unit display for power direction setup, showing line to load.

Overvoltage Relay Delay

This function sets the delay time before an overvoltage trip occurs. The range of delays is 1 to 15 seconds, in steps of 1 second. Choosing

OFF

disables overvoltage protection. The Trip Unit display is shown in Figure 35.

Power-Reversal Relay Delay

This function sets the delay time before a powerreversal trip occurs. The range of delays is 1 to 15 seconds, in steps of 1 second. Choosing

OFF

disables

21


Chapter 2. Setup Mode power-reversal protection. The Trip Unit display is shown in Figure 38.

Potential Transformer Primary Voltage

Enter the primary voltage rating of the potential transformer, as illustrated in Figure 40. The range of values is 120 to 600 volts, with an increment of 1 volt.

C A U T O N:::: Incorrect storage of this set point will result in incorrect metering values. Even if this setting is entered remotely, it must be entered again locally.

Figure 38. Trip Unit display for power-reversal relay delay.

Rating Plug Current Setting

The Trip Unit display for rating plug setting is shown in Figure 39. Enter the current setting of the rating plug by scrolling through the list with

VALUE and pressing

ENTER

when the correct value is reached. Table 16 lists the available rating plugs for the various Trip Units.

enregistrée pour ce réglage, les mesures seront fausses. Cette valeur doit être enregistrée locallement même dans le cas d’une utilisation à distance avec commnet.

C A U T O N result in incorrect metering values.

enregistrée pour ce réglage, les mesures seront fausses.

Figure 40. Trip Unit display for potential transformer primary voltage set point.

Potential Transformer Connection

Note that this step applies only to MicroVersaTrip

PM Trip Units.

Select the appropriate potential transformer connection, either line-to-line ( Ph-Ph ) or line-to-neutral

( Ph-N ), as illustrated in Figure 41.

Figure 39. Trip Unit display for rating plug current set point.

Brrrreee a k errrr a m

R a n g u g O p o n A m

800–2000

A

2500–320

0 A

4000 A

60, 80, 100, 125, 150, 200, 225, 250, 300, 400,

450, 500, 600, 630, 700, 750, 800, 900, 1000,

1100, 1200, 1250, 1500, 1600, 2000

1200, 1500, 1600, 2000, 2400, 2500, 3000,

3200

1600, 2000, 2400, 2500, 3000, 3200, 3600,

4000

5000 A 3200, 4000, 5000

Table 16. Trip Unit rating plug options.

C A U T O N result in incorrect metering values.

enregistrée pour ce réglage, les mesures seront fausses.

22



MicroVersaTrip PM Trip Unit. Simply press

ENTER

to identify the unit to the FPU. The address shown on the FPU’s display must not be changed at the breaker.

Figure 41. Trip Unit display for potential transformer connection choice.

Power Demand Intervals

This function sets the power demand interval, which can be in the range of 5 to 60 minutes, in steps of 5 minutes. This setpoint specifies the time interval for power demand averaging. The Trip Unit calculates a rolling average of breaker power over this time interval. The Trip Unit display is illustrated in Figure 42.

Accessory Configuration Setup (RMS9D

Series Trip Units Only)

RMS9D Trip Units have a six-position DIP switch module on the rear of the unit that controls the configuration of the Power Break® II integrated accessories. These switches can be set up to define the types of signals (protection trip, Shunt trip, Shunt Trip with Lockout, or Undervoltage Release trip) that activate the Bell Alarm–Alarm Only and Bell Alarm with Lockout accessories on the Power Break II breaker. Each of the six switches enables or disables a different path to activate these accessories from the different types of trip signals. Figure 44 shows the logic function for the switches.

The Trip Unit DIP switches are illustrated in Figure

45, with the factory settings shown. Table 17 lists the switch functions.

Figure 42. Trip Unit display for power demand interval.

Communication Address

Note that this step applies only to MicroVersaTrip

PM Trip Units connected to either POWER

LEADER™ or Epic MicroVersaTrip systems.

With POWER LEADER systems, the address is assigned at the breaker. The address options are from 256 to 999, in steps of 1, as illustrated in Figure

43.

Figure 44. Logic diagram for accessory configurations.

Figure 43. Trip Unit display for setting communication address.

With Epic MicroVersaTrip systems, the Field

Programming Unit (FPU) calls for removal of the rating plug. This is not required for addressing a

23


Chapter 2. Setup Mode instantaneous, ground-fault, or protectiverelay) occurs, the contacts of the Bell

Alarm–Alarm Only also change state. The factory switch setting is enabled.

Lockout accessory causes the breaker to trip, the contacts of the Bell Alarm with Lockout also change state. The factory switch setting is disabled.

Figure 45. Accessory configuration switch on rear of Trip Unit, showing factory settings (solid part indicates that switch is pushed in on that side).

causes the breaker to trip, the contacts of the

Bell Alarm with Lockout also change state. The factory switch setting is disabled.

Description of Switch Settings

Following are descriptions of the effects of each accessory switch when it is enabled: accessory causes the breaker to trip, the contacts of the Bell Alarm–Alarm Only also change state. The factory switch setting is disabled.

instantaneous, ground-fault, or protectiverelay) occurs, the contacts of the Bell Alarm with Lockout also change state. The factory switch setting is enabled.

To change switch settings on RMS9D series Trip

Units, refer to Chapter 5 to remove the Trip Unit from the breaker. Push in the appropriate Enable or

Disable side of the switch to configure the accessories, as shown in Figure 46, and carefully reinstall the

Trip Unit. Verify that the new switch settings are correct by testing the breaker responses to

Undervoltage Release trips and Shunt trips.

causes the breaker to trip, the contacts of the

Bell Alarm–Alarm Only also change state. The factory switch setting is disabled.

S w h

F a

S ettttttttiiiin g F u n o n

1

2

3

4

5

6

Disabled

Disabled

Enabled

Disabled

Disabled

Enabled

Shunt Trip or Shunt Trip with

Lockout activates Bell

Alarm–Alarm Only

UVR trip activates Bell

Alarm–Alarm Only

Protection trip activates Bell

Alarm–Alarm Only

Shunt Trip or Shunt Trip with

Lockout activates Bell Alarm with

Lockout

UVR trip activates Bell Alarm with

Lockout

Protection trip activates Bell

Alarm with Lockout

Table 17. Accessory configuration switch settings, including factory defaults.

Figure 46. Setting the accessory configuration switches.

24



3-1 Overview

The metering mode displays parameter values for that part of the electrical system controlled by the breaker’s MicroVersaTrip Plus or MicroVersaTrip

PM Trip Unit. Both currents and voltages are computed as true rms values. There is no loss of accuracy even in the presence of high levels of harmonics. All metering displays are updated once each second.

Accuracies and resolutions are described in Section

1-8 and Table 7.

All values except frequency are displayed to three significant figures. For example, phase currents might be displayed as 60.7 AMPS

, 492 AMPS

, or 1.22

KA .

The Trip Unit metering displays are appropriate to the actual configuration ordered. All MicroVersa-

Trip Plus and MicroVersaTrip PM Trip Units include current metering. Two configurations of the

MicroVersaTrip PM Trip Units (with PM and M suffixes in their catalog numbers) have the full complement of metering displays.

The Trip Unit must be provided with control power to display metered values. This can come from internal battery power, from a MicroVersaTrip Portable

Power pack, from an external +24 Vdc power supply, or by energizing the breaker to at least 20% of its sensor load.

3-2 Metering Mode Operation

Metering mode is reached by pressing until

METER

FUNCTION

appears in the upper-right corner of the display. Metering mode always begins with the phase currents. The sequence in which the metered values appear is illustrated in Figure 47.

Figure 47. Trip Unit metering mode function flow.

25



Figure 47. Trip Unit metering mode function flow (continued).

26



Current

The initial metering display is phase 1 line current, as illustrated in Figure 48. Press VALUE to cycle among the three phases. Current is displayed from 0 to 999 amperes and from 1.00 to a maximum of 999 kA. For current values less than 5% of the current sensor rating, the displayed value is zero.

Energy

This display, illustrated in Figure 51, shows the aggregate energy flow through the breaker. The value is displayed from 0 to 999 kWh, then automatically switches units to display 1.00 to 999 Mwh, and then again to display 1.00 to 999 GWh. When 999

GWh is exceeded, the display switches back to 0 kWh. The largest negative energy value displayed is

−

99 GWh.

Accumulated energy is stored in nonvolatile memory. The value in the display can be reset through the Trip Unit keypad. To reset the energy value, hold down the VALUE key and press the SELECT key.

The displayed energy value will reset to zero.

Figure 48. Trip Unit display for current metering.

Voltage

The voltage displayed by this function depends on how the Trip Unit was configured during Setup. If the breaker was configured with phase-to-neutral connections, the display shows individual phase voltages, as in Figure 49. If the breaker was configured with phase-to-phase connections, the display shows voltages between the phases, as in Figure 50. Press

VALUE to cycle through the three phase voltages.

Figure 51. Trip Unit display for aggregate energy.

Total Real Power

The value displayed for total real power, illustrated in Figure 52, represents the aggregate real power in watts flowing through all three phases. The value is displayed from 0 to 999 kW, then automatically switches units to display 1.00 to 999 MW.

Figure 49. Trip Unit display for line-to-neutral voltages.

Figure 52. Trip Unit display for aggregate real power.

Figure 50. Trip Unit display for line-to-line voltages.

27



Total Apparent Power

The value displayed for total apparent power, as illustrated in Figure 53, represents the aggregate total apparent power in volt-amperes flowing through all three phases. The value is displayed from

0 to 999 kVA, then automatically switches units to display 1.00 to 999 MVA.

Frequency

This display, illustrated in Figure 55, shows the frequency of the line current. Either line voltage or current must be present for this display to appear.

The frequency is calculated from the current and voltage signals. If both are present, the voltage frequency is displayed. If neither are present, this display does not appear.

The frequency is displayed in steps of 1 Hz.

Figure 53. Trip Unit display for aggregate apparent power.

Power Demand

Power demand is the average of total power over the selected interval (5, 10, …, 55, 60 minutes). This display is updated every minute. The power demand display is illustrated in Figure 54.

Figure 55. Trip Unit display for frequency.

Figure 54. Trip Unit display for power demand.

Peak Power Demand

Peak power demand is stored in nonvolatile memory.

Every minute, the power demand is calculated and compared against the stored peak power demand. If the new power demand is greater than the stored peak demand, the Trip Unit stores the new power demand as the peak value. The display of peak power demand is identical to the display illustrated in Figure 54, except that the units segment (in this case, MW) flashes.

Peak demand is stored in nonvolatile memory. The value in the display can be reset through the Trip

Unit keypad. To reset the peak demand to the present demand, hold down the

VALUE

key and press the

SELECT

key.

28



4-1 Overview

Trip Unit Status mode is selected by pressing the

FUNCTION

key until

STATUS

appears on the display.

Status mode indicates the present status of the Trip

Unit and circuit breaker. It also displays information about trip conditions and the trip history of the breaker. Two categories of information can be displayed: trip information and trip operations counters.

long-time, short-time, adjustable-instantaneous, and ground-fault. The corresponding counter is incremented after any of these trips. A maximum of 256 trips can be counted for each type of fault, after which the counter rolls over to zero.

4-2 Status Mode Operation

This section describes each of the Status mode displays.

Trip Information

Various trip information parameters are displayed when an overcurrent trip or protective relay trip occurs. Additionally, RMS9D series Trip Units provide target indications if a breaker Undervoltage

Release or Shunt Trip accessory trip occurs.

The Status display indicates when a long-time, shorttime, or ground-fault trip is imminent (breaker is in pickup). Following a trip, the Trip Unit displays a trip target to indicate the type of trip, the fault current magnitude at trip, and the phase of the fault

(where appropriate). For adjustable-instantaneous trips, the Trip Unit displays the instantaneous function setpoint rather than the actual current. Fault magnitude is not displayed for high-range instantaneous trips.

Trip information is stored in the Trip Unit memory and displayed when Trip Unit power is returned or if internal battery power is enabled. Trip information is always available if Trip Unit power is maintained following a fault.

The Status display records trip information only for those options ordered with the Trip Unit. For example, only MicroVersaTrip PM Trip Units can be equipped with protective relays and thus display information about them.

RMS9D series Trip Units only display trip targets for

Undervoltage Release and Shunt Trip accessory trips when those accessory modules are installed in the

Power Break® II breaker.

Normal Status Display

When the breaker is closed and its circuit energized, the normal status display appears, as illustrated in

Figure 56. This display indicates that the Trip Unit is not in long-time pickup and that all trip targets are cleared.

Figure 56. Trip Unit display for normal status.

Long-Time Overcurrent Pickup Display

When the long-time overcurrent function has reached 95% of the Trip Unit’s long-time current rating, xLT,

PICKUP

begins to flash on the display, as illustrated in Figure 57. During the transition from

95% to 100% of the set point, the frequency of flashing increases. When the set point is reached, but before the time delay has expired, the flashing stops, indicating that tripping is imminent.

Trip Operations Counters

Trip operations counters record the total number of overcurrent trips. Separate internal counters are provided for each of the following types of trips:

29



Figure 57. Trip Unit status display for long-time overcurrent pickup.

Figure 59. Trip Unit Status display for long-time overcurrent trip.

Trip Target and Fault Displays

When the breaker trips, information about the trip can be displayed in Status mode. Figure 58 illustrates a typical fault display following a trip.

Short-Time Overcurrent Fault Display

After a short-time trip, the status display appears as in Figure 60. The information presented is similar to that in the long-time overcurrent display, with the short-circuit (

I >> ) and short-time (

ST

) targets.

Long-Time Overcurrent Fault Display

After a long-time overcurrent trip, the trip information display contains the fault current magnitude at trip, the phase on which the fault occurred, and the overload (

I > ) and long-time (

LT

) trip targets. This display is illustrated in Figure 59.

Figure 60. Trip Unit status display for short-time overcurrent trip.

Figure 58. Typical fault display following a breaker trip.

The

FAULT

segment indicates that the breaker has tripped because of an overcurrent condition or a protective relay. This segment remains visible until it is cleared, including displays in Setup and Meter mode. This provides an indication that trip information is available, even if other screens are being displayed. If the trip was caused by a protective relay, the

FAULT

segment flashes in Setup or Meter mode.

After an overcurrent trip, the

FAULT

segment and the appropriate overcurrent target are displayed in all modes, without blinking, until cleared.

Instantaneous Fault Display

The status display for an adjustable instantaneous trip is illustrated in Figure 61. Because of the fast response of this function, the Trip Unit displays only the threshold current for the fault, not the actual fault current nor the phase on which the fault occurred. For high-range instantaneous trips, the threshold current is also not displayed, only the trip target.

Figure 61. Trip Unit status display for instantaneous overcurrent trip.

30



Ground-Fault Display

When a ground-fault trip occurs, the display illustrated in Figure 62 appears. The fault current is displayed in units of xCT, the breaker CT sensor rating.

Multiply the sensor rating of the breaker by the displayed fault current multiplier to obtain the groundfault current at trip.

Shunt Trip and Undervoltage Release Trip

Displays (RMS9D Series Trip Units Only)

When a Power Break ®II breaker trips due to the

Shunt Trip, Shunt Trip with Lockout, or

Undervoltage Release, the display indicates the trip with a flashing target, as illustrated in Figure 64. The indications

ST

and

UVR

appear for Shunt Trip and

Undervoltage Release trips, respectively. Note that the

FAULT

segment does not display, since the trip originated external to the breaker and may not represent a true fault condition.

Figure 62. Trip Unit status display for ground-fault trip.

Protective-Relay Fault Display

After a protective-relay trip, the display indicates

FAULT

with a target for the type of relay that initiated the trip. This is illustrated in Figure 63 for an overvoltage trip. The targets for the five protective relays are listed in Table 18.

Figure 63. Trip Unit status display for protective-relay trip.

Figure 64. Trip Unit status display for Undervoltage Release trip.

Clearing the Trip Information

Since trip information is stored in nonvolatile memory, the Trip Unit continues displaying the trip information until it is manually cleared or a new trip occurs. After the trip information has been recorded or reviewed, it can be cleared with the keypad. With the Trip Unit in Status mode, hold down the

VALUE key and press the

SELECT

key. The trip information is then cleared and the display reverts to

STATUS OK

, as in Figure 56.

C od e P otttteee cttttiiiivvvveee R ellllaa

∆

V Voltage unbalance

∆

I Current unbalance

V < Undervoltage

I

I

V > Overvoltage

Power reversal

Table 18. Trip Unit display targets for protective relays.

Trip Operations Counter Display

Trip operations counters record the total number of overcurrent trips. To review any of the trip operations counters while in Status mode, press the

SELECT key until the desired count appears. Figure 65 illustrates a typical trip operations counter display.

This example indicates that there have been three long-time trips on this breaker since the counter was last reset.

31



Figure 65. Trip Unit status display for long-time overcurrent trip counter.

Clearing the Trip Operations Counters

Since the trip operations counters are stored in nonvolatile memory, the Trip Unit maintains the information indefinitely. To clear a particular counter, first display the corresponding count, then hold down the

VALUE

key and press the

SELECT

key. The trip counter is reset to zero.

32



Rating plugs and MicroVersaTrip Plus and Micro-

VersaTrip PM Trip Units are factory tested and normally shipped installed in their breaker frame assemblies or as part of a conversion kit. There is no requirement for periodic maintenance of the Trip

Units. There are no user-serviceable components within the Trip Units.

the breaker OFF, disconnect it from all voltage sources, and discharge the closing springs, if they are charged, by closing and then opening the breaker.

A V E R TIIIISSS SE M E N T procédure, mettre le disjoncteur en position OFF, le déconnecter de toute tension d’alimentation, et décharger les ressorts de fermeture.

5-1 Trip Unit Removal and

Replacement

trim-plate assembly and remove the trim plate.

Rejection pins are installed on the rear of all Trip

Units to prevent installation of an incorrect Trip

Unit into a breaker. Do not use excessive force when installing a Trip Unit. Replacement of a Trip Unit always requires repeating the setup procedures, as described in Chapter 2.

the breaker cover. Remove the cover from the breaker face.

Power Break® Insulated-Case Circuit

Breakers

Power Break circuit breakers are shipped from the factory with their Trip Units installed. Removal is only necessary for replacement. Refer to GEH-6303 for detailed instructions on replacing Trip Units in

Power Break circuit breakers.

W AR N G:::: Before beginning this procedure, turn the breaker off, disconnect it from all voltage sources, and discharge the closing springs.

then hold the Trip Unit near the battery cover and lift it straight out of the breaker.

To reinstall the Trip Unit, perform the following procedure:

While holding the lever, carefully align the connector on the rear of the Trip Unit with the connector in the breaker. Press down on the

Trip Unit while holding it near the battery cover. When the Trip Unit is fully seated, slide the locking lever back to the left.

four #10-32 screws to 32 in-lbs.

A V E RT SE ME N T procédure, mettre le disjoncteur en position OFF, le déconnecter de toute tension d’alimentation, et décharger les ressorts de fermeture.

#8-32 screws to 20 in-lbs.

Power Break II Insulated-Case Circuit

Breakers

Power Break II circuit breakers are shipped from the factory with their Trip Units installed. Removal is only necessary for replacement or to change the accessory-configuration switches.

To remove the Trip Unit, perform the following procedure:

Type AKR Low-Voltage Power Circuit

Breakers

Type AKR circuit breakers are shipped from the factory with their Trip Units installed. Removal is necessary only for replacement. Trip Units are separately mounted on the breaker structure and are removed by moving the Trip Unit removal bracket. When a

Trip Unit is replaced, the locking arm snaps back into place to indicate proper engagement. Refer to

GEH-6303 for detailed instructions on replacing

Trip Units in in Type AKR circuit breakers.

33



N G:::: Always de-energize Type AKR circuit breakers before attempting to remove or replace the

Trip Unit. Because of the exposed location of the

Trip Unit, failure to observe this warning may result in equipment damage or personal injury, including death.

AKR de toute tension avant d’enlever ou remplacer le déclencheur. L’emplacement du déclencheur

étant proche de parties sous tension, le non respect de cet avertissement peut entrainer des endommagements du matériel, et des blessures pouvant être mortelles.

5-2 Rating Plug Removal and

Replacement

Figure 66. Removing the interchangeable rating plug.

C A U T O N breaker is carrying current reduces the breaker’s current-carrying capacity to approximately 25% of the current sensor rating.

A T TE N T et traversé par un courant, le niveau de protection s’ajuste à approximativement 25% du calibre du transformateur d’intensité.

Interchangeable rating plugs are removed with a

Rating Plug Extractor, Catalog No. TRTOOL.

(Suitable equivalents are commercially available as

“integrated circuit (DIP) extractors.”) Grasp the rating plug tabs with the extractor and pull the plug out as illustrated in Figure 66. Be sure to grab the tabs and not the front cover of the rating plug, or the plug may be damaged.

Rejection features are provided on all rating plugs to prevent application mismatches. Never force a rating plug into place. Refer to Chapter 1 to find the appropriate rating plugs for each sensor rating and breaker frame.

If a replacement rating plug has a different rating than the plug that was removed, follow the appropriate setup procedure in Chapter 2 to enter the new rating.

Do not attempt to use a rating plug from a Spectra

RMS™ breaker or a MicroVersaTrip RMS-9/MVT-4 function trip in a MicroVersaTrip Plus or Micro-

VersaTrip PM Trip Unit.

5-3 Trouble-Shooting Guide

The following guide is provided for trouble-shooting and isolating common problems. It does not cover every possible condition. Contact the Customer

Support Center at 800-843-3742 if the problem is not resolved by these procedures.

34


Chapter 5. Maintenance and Trouble-Shooting m p o m

1. The Trip Unit display is blank.

P o C a

Line current is below 20% of the breaker sensor rating

(MicroVersaTrip Plus).

External +24 Vdc is absent

(MicroVersaTrip PM).

C o cttttiiiivvvveee A o n

At least 20% of the current sensor rating, xCT, must be flowing through the breaker to activate the display.

If not, power the Trip Unit with the internal battery or the Portable Power Pack. The battery power supply is disabled when any current is sensed through the current sensors.

Check that the control power supply is present and operational.

2. The Trip Unit display flashes.

3. The Trip Unit display flashes ERR .

4. The trip indication target will not clear.

5. Unit does not communicate with the

Monitor, POWER

LEADER Distribution

Software, or FPU.

Can occur on Plus-style Trip

Units when the load current fluctuates near 20% of the breaker sensor rating.

The built-in self test has detected an error.

Power the Trip Unit with the internal battery or the

Portable Power Pack.

Replace the Trip Unit.

Trip Unit is not in Status mode.

Press FUNCTION until STATUS is displayed. Hold down the VALUE key and press the SELECT key to clear the target.

The commnet wires are shorted or improperly connected.

FPU version is lower than 2.0.

The Trip Unit address is incorrect.

Locate and repair the short or the incorrect connection.

Update the FPU to version 2.0 or higher.

Check that the address assigned to the Trip Unit, as in Chapter 2, agrees with the address at the host.

6. Current readings are incorrect.

7. Voltage readings are incorrect.

The rating plug value was defined incorrectly.

The potential transformer

(PT) primary voltage was defined incorrectly.

The PT connection was defined incorrectly.

Read the X value from the rating plug name plate and enter this as the xIn value with the rating plug current set point procedure in Chapter 2. Do not enter the sensor rating, S.

Read the PT primary rating from the PT name plate and enter this value with the PT primary voltage procedure in Chapter 2.

Follow the PT connection procedure in Chapter 2 to enter Ph-N for a wye-connected PT primary or Ph-Ph for a delta-connected PT.

8. The display is blank or the Low Battery symbol appears when the

BATTERY key is pressed.

The battery is discharged.

The battery was stored too long with no power applied to the Trip Unit

Replace the battery.

Power the Trip Unit with external power or by energizing the breaker for several days to freshen the battery.

35


Appendix 1

Catalog Numbers for RMS9C Trip

Units in AKR Circuit Breakers

The following table contains the catalog number options for AKR circuit breakers, with an illustration of a valid number and the options that each part of the number refers to.

0 4 Z 1 P

C o d D essssccc o n

08

16

20

30

01

03

04

06

32

40

A AKR

2

3

4

225–2000 A maximum CT

3200 A maximum CT

4000 A maximum CT

150 A

225 A

400 A

600 A

800 A

1600 A

2000 A

3000 A

3200 A

4000 A

L

S

H

I

K

G

GD

W

Long-time (standard)

Short-time

High instantaneous

Instantaneous

Fixed high instantaneous

Ground fault

Defeatable ground fault (not UL listed)

W curve

Z1

Z2

X

Ground-fault zone-selective interlock

Ground-fault and short-time ZSI

Switchable instantaneous short time and ground fault

P

M



R Replacement trip unit

F u n o n



( m C T ) alllllllleee d T errrrccc u n o u n d F a otttteee cttttiiiio n otttteee o n

O p o naa F u n o nssss

C om m

M etttteee u n n g a o n,,,,

R ellllaa

R ep a ceee m en n g

36


Appendix 2

Catalog Numbers for RMS9C Trip

Units in Power Break

®

Circuit Breakers

The following table contains the catalog number options for Power Break circuit breakers, with an illustration of a valid number and the options that each part of the number refers to.

0 8 Z 1 P


16

20

25

30

40

02

04

08

10

L

S

H

I

C Power Break

2

3

4

800–2000 A maximum CT

3000 A maximum CT

4000 A maximum CT

200 A

400 A

800 A

1000 A

1600 A

2000 A

2500 A

3000 A

4000 A


Short-time

High instantaneous

Instantaneous

G

GD

Z1

Z2

Ground fault




P

M




F u n o n



( m a x C T alllllllleee d T errrrccc u n otttteee o n o u n d F a otttteee cttttiiiio n

O p o naa F u n o nssss

C om m u niiiiccc a

M etttteee n g o n

R ellllaa n g

R ep a ceee m en

37


Appendix 3

Catalog Numbers for RMS9D Trip

Units in Power Break

®

II Circuit

Breakers

The following table contains the catalog number options for Power Break II circuit breakers, with an illustration of a valid number and the options that each part of the number refers to.

0 8 Z 1


B Power Break II

16

20

25

30

40

02

04

08

10

2

3

4

L

S

H

I

G

GD

2000 A maximum CT

3000/3200 A maximum CT

4000 A maximum CT

200 A

400 A

800 A

1000 A

1600 A

2000 A

2500 A

3000 A

4000 A


Short-time

High instantaneous

Instantaneous

Ground fault


Z1

Z2

P

M






F u n o n


Brrrreee

( m a k errrr F

C T ) a m e alllllllleee d T errrrccc u n otttteee cttttiiiio n o u n d F a otttteee o n

O p o naa F u n cttttiiiio nssss

C om m

M etttteee u n n g a o n,,,,

R ellllaa

R ep a ceee m en n g

38


Appendix 4

Trip Unit Battery Suppliers

S u p p

Wilson Greatbatch Ltd.

Electrochem Lithium Batteries

10,000 Wehrle Drive

Clarence, NY

(716) 759–5428

C attttaa

N u m b o g

3B24–XA

Contact the supplier for the nearest distributor.

39

g

GE Electrical Distribution & Control

General Electric Company

41 Woodford Ave., Plainville, CT 06062

GEH6273 R06 1299 © 1999 General Electric Company

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