g
Power Break® Circuit Breakers
800–2000 A Frames, 240–600 Vac
User’s Guide
GEH–4693D
WARNINGS
CAUTIONS
NOTES
GEH–4693D
WARNINGS, CAUTIONS, AND NOTES
AS USED IN THIS PUBLICATION
Warning notices are used in this publication to emphasize that hazardous voltages, currents, or
other conditions that could cause personal injury or death are present in this equipment or may be
associated with its use.
Warning notices are also used for situations in which inattention or lack of equipment knowledge
could cause either personal injury or damage to equipment.
Caution notices are used for situations in which equipment might be damaged if care is not taken.
Notes call attention to information that is especially significant to understanding and operating
the equipment.
This document is based on information available at the time of its publication. While efforts have
been made to ensure accuracy, the information contained herein does not cover all details or variations in hardware and software, nor does it provide for every possible contingency in connection
with installation, operation, and maintenance. Features may be described herein that are not present in all hardware and software systems. GE Industrial Systems assumes no obligation of notice t o
holders of this document with respect to changes subsequently made.
GE Industrial Systems 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:
Power Break®, MicroVersaTrip Plus™ , MicroVersaTrip PM™, MagneTrip™, MicroVersaTrip®
© 1998 GE Company
All Rights Reserved
i
Power Break® Circuit Breakers
Table of Contents
Chapter 1. Receiving and Installation
1–1 Overview................................................................................................................................1
1–2 Receiving the Breaker ............................................................................................................. 1
Storage ............................................................................................................................ 1
1–3 Installation............................................................................................................................. 1
Bolted Electrical Connections............................................................................................ 1
Breaker Mounting............................................................................................................. 1
Chapter 2. Breaker Operation
2–1 Standard Features................................................................................................................... 3
2–2 Operating Instructions............................................................................................................ 3
Sequence of Operations..................................................................................................... 3
Operating Instructions for Manually Charged Breakers........................................................ 4
Operating Instructions for Electrically Charged Breakers .....................................................4
Wiring Notes .................................................................................................................... 5
Application Notes ............................................................................................................. 6
2–3 Trip Unit Setup ...................................................................................................................... 6
MicroVersaTrip® and MicroVersaTrip® RMS-9 Trip Units.................................................. 6
MagneTrip™ Trip Units.................................................................................................... 9
MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units............................................... 9
Chapter 3. Accessories
3–1 Introduction .........................................................................................................................10
3–2 Circuit Breaker Cover.............................................................................................................10
Breaker Cover Removal ....................................................................................................10
Breaker Cover Reassembly ................................................................................................11
3–3 Shunt Trip Device..................................................................................................................12
Mounting Plate Removal ..................................................................................................12
Shunt Trip Installation.....................................................................................................13
Mounting Plate Installation ..............................................................................................13
3–4 Undervoltage Release Device ..................................................................................................14
UVR Installation..............................................................................................................14
3–5 Blown-Fuse Trip Device..........................................................................................................15
Blown-Fuse Trip Device Installation...................................................................................16
3–6 Auxiliary Switch.....................................................................................................................16
Auxiliary Switch Installation .............................................................................................17
3–7 Remote Close Solenoid and Remote Charge Indication ............................................................18
3–8 Optional Features ..................................................................................................................18
Limited Close Access Button.............................................................................................18
Padlock Function.............................................................................................................19
Chapter 4. Maintenance
4–1 Inspections............................................................................................................................20
4–2 Lubrication...........................................................................................................................20
ii
Power Break® Circuit Breakers
List of Figures and Tables
Figures
1. Circuit breaker with lifting straps in place. ............................................................................................... 1
2. Location of mounting bolt inserts on 800 A frame breakers ....................................................................... 1
3. Location of mounting bolt inserts on 1600–2000 A frame breakers............................................................. 2
4. Manually charged breaker. ..................................................................................................................... 3
5. Motor operator-charged breaker. ............................................................................................................ 3
6. Motor operator charged breaker with the top cover removed..................................................................... 3
7. Bell alarm wiring to prevent continuous cycling of the automatic charging mechanism. .............................. 5
8. Wiring for optional bell alarm lockout applications................................................................................... 5
9. Tap changer cards. ................................................................................................................................6
10. Cover and trip unit removed from the breaker ......................................................................................... 7
11. Neutral CT connection for four-wire ground fault..................................................................................... 7
12. Wiring diagram for MicroVersaTrip and MicroVersaTrip RMS-9 trip units with ground fault on a
top-fed four-wire load. ............................................................................................................................ 8
13. Wiring diagram for MicroVersaTrip and MicroVersaTrip RMS-9 trip units with ground fault on a
bottom-fed four-wire load. ...................................................................................................................... 8
14. Releasing the trip unit interlock to remove or install the trip unit............................................................... 8
15. Aligning the trip unit to the mounting plate. ........................................................................................... 9
16. Adjusting the settings on a MagneTrip trip unit........................................................................................ 9
17. 800 A frame electrically operated breaker................................................................................................10
18. 1600–2000 A frame electrically operated breaker. ....................................................................................11
19. 1600–2000 A frame electrically operated breaker with the outer cover removed..........................................11
20. Wire ties on the accessory leads and mounring plate insulator. .................................................................11
21. Crossbar hook engaging the drive hook. .................................................................................................11
22. Shunt trip device with cut-off switch........................................................................................................12
23. Shunt trip wiring diagram. ....................................................................................................................12
24. Locations of the mounting plate retaining screws, isolation barrier, and molded drive crank.......................12
25. Shunt trip coil position with no blown-fuse trip device..............................................................................13
26. Shunt trip coil position with blown-fuse trip device. .................................................................................13
27. Attaching the switch bracket to the arm stop. ..........................................................................................13
28. Undervoltage release device...................................................................................................................14
29. Dropping resistor supplied with 240–600 V UVRs.....................................................................................14
30. UVR wiring diagram. ............................................................................................................................14
31. Slide reset lever and spring on the mounting plate...................................................................................15
32. Positioning the UVR assembly on the mounting plate..............................................................................15
33. Installing the UVR mounting screw. .......................................................................................................15
34. Blown-fuse trip device accessory..............................................................................................................15
35. Blown-fuse trip device wiring diagram.....................................................................................................16
36. Auxiliary switch. ...................................................................................................................................16
37. Auxiliary switch wiring diagram. ............................................................................................................17
iii
Power Break® Circuit Breakers
List of Figures and Tables
38. Trip unit removed from the breaker. ......................................................................................................17
39. Installing the auxiliary switch assembly. ..................................................................................................17
40. Securing the auxiliary switch assembly. ...................................................................................................17
41. Wiring diagram for remote charge indication. ........................................................................................18
42. Wiring diagram for remote charge indication with remote close solenoid..................................................18
43. Limited close access button....................................................................................................................18
44. OFF button padlock with panel door interlock. .......................................................................................19
45. Defeating the OFF button padlock. ........................................................................................................19
Tables
1. Weights of the various breaker frame sizes, with and without a motor operator............................................ 1
2. Bolt sizes and mounting torques for bus connections. ............................................................................... 1
3. Sequence of operations that may be performed with Power Break circuit breakers....................................... 4
3. Application data for control power.......................................................................................................... 5
4. Accessory lead color codes .....................................................................................................................10
5. Shunt Trip electrical characteristics........................................................................................................12
6. UVR electrical characteristics.................................................................................................................14
7. Auxiliary switch electrical characteristics.................................................................................................17
8. Catalog numbers and ratings for the remote close solenoid ......................................................................18
iv
Power Break® Circuit Breakers
Chapter 1. Receiving and Installation
1–1 Overview
The Power Break® line of insulated-case circuit breakers
is designed to protect low-voltage power circuits and
equipment. Current models are offered with MagneTrip™, MicroVersaTrip Plus™, and MicroVersaTrip PM™
trip units for fault detection.
1–2 Receiving the Breaker
Unpack the circuit breaker and inspect it for shipping
damage. Ensure that the breaker has the proper current,
voltage, and interruption ratings for the application.
The weights of the various frame sizes are listed in Table
1, for reference. Figure 1 shows a breaker with straps for
lifting.
CCCCAAAAUUUUTTTTIIIIOOOONNNN::
its operating handle.
Table 1. Weights of the various breaker frame sizes, with and
::
Do not attempt to lift the circuit breaker by
Frame
Rating, A Type Weight, lbs
800
1600
2000
Manual
Electric
Manual
Electric
Manual
Electric
without a motor operator.
50
64
82
96
88
102
condensation, preferably by storage in a warm, dry room.
Circuit breakers for outdoor equipment should be stored
in that equipment only when power is available and heaters are in operation, to prevent condensation.
The breaker should be stored in a clean location, free
from corrosive gases or fumes. In particular, protect the
breaker from moisture and cement dust, as that combination may be corrosive.
If the breaker is stored for any length of time, it should be
inspected periodically to ensure good mechanical condition.
1–3 Installation
Bolted Electrical Connections
Using an industry-accepted solvent, remove any foreign
material from the line and load strap surfaces and the
corresponding surfaces of connecting bus and terminal
studs. Ensure that the mating surfaces are smooth and
free of burrs and nicks.
Place the bus connections in position and align the
mounting holes. Insert and fasten the mounting bolts and
washers according to the specifications in Table 2.
Bus Connection
Breaker Frame, A Bolt Dia. Torque, in-lbs
800 (1) 1/2 in 300
1200–1600 (2) 1/2 in 300
2000 (4) 1/2 in 300
Figure 1. Circuit breaker with lifting straps in place.
Storage
The breaker should be placed in service immediately in its
permanent location. However, if it must be stored for an
indefinite period, it should be carefully protected against
Table 2. Bolt sizes and mounting torques for bus connections.
Breaker Mounting
For mounting the circuit breaker, use the four 1/4-20 x 1/2inch-deep inserts in the back of the breaker. The locations
of the inserts are shown in Figures 2 and 3 for the two
frame sizes. Tighten the mounting bolts to 50 in-lb.
Figure 2. Location of mounting bolt inserts on 800 A frame breakers.
1
Power Break® Circuit Breakers
Chapter 1. Receiving and Installation
Figure 3. Location of mounting bolt inserts on 1600–2000 A frame
breakers.
2
2–1 Standard Features
Power Break circuit breakers are equipped with the following standard features. The letters are keyed to the breaker
illustrations in Figures 4, 5, and 6.
AAAAIndicator ON – Red
CHG (manual) – yellow
CHARGED (electrical) – yellow
OFF – Green
BB
BB
ON button
CC
CC
OFF button
DDDDManual charging handle
EEEELockable manual charge engagement button (motor
operated only)
FFFFTerminal board (motor operator drive unit)
GGGGRemovable protective window
JJJJCT tap setting indicator (MicroVersaTrip only)
KKKKRemoval protective trip unit cover (Magnetrip™
only)
LLLLCover mounting screws (four)
MMMMMidcover mounting screws (three – motor operated
only)
NNNNMicroVersaTrip RMS-9 trip unit interchangeable rat-
ing plug
OOOOMotor operator control circuit fuses
PPPPMicroVersaTrip RMS-9 test set connection port
Power Break® Circuit Breakers
Chapter 2. Breaker Operation
Figure 5. Motor operator-charged breaker.
Figure 4. Manually charged breaker.
Figure 6. Motor operator charged breaker with the top cover
removed.
2–2 Operating Instructions
Sequence of Operations
The sequence of operations that may be performed on the
circuit breaker is listed in Table 3.
3