GE EntelliGuard G User manual
©2012 General Electric All Rights Reserved 3
HAZARD CATEGORIES
The following important highlighted information appears
throughout this document to warn of potential hazards or
to call attention to information that clarifies a procedure.
Carefully read all instructions and become familiar with
the devices before trying to install, operate, service or
maintain this equipment.
DANGER
Indicates a hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION
Failure to comply with these instructions may result in
product damage.
NOTICE
Indicates important information that must be
remembered and aids in job performance
TRADEMARKS
EntelliGuard™ G
EntelliGuard™ TU
WARRANTY
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
Consumer & Industrial assumes no obligation of notice to
holders of this document with respect to changes
subsequently made. GE Consumer and Industrial 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.
Contact your local sales office if further information is
required concerning any aspect of EntelliGuard G circuit
breaker operation or maintenance.
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EntelliGuard® G Circuit Breaker DEH-41304C
Table of Contents 13 March 2014
4 ©2012 General Electric All Rights Reserved
SECTION 1 –GENERAL INFORMATION
STORAGE......................................................................................................................................................................................................................... 7
INTRODUCTION ...........................................................................................................................................................................................................7
Quality Assurance ........................................................................................................................................................................................7
Options Check Sheet...................................................................................................................................................................................7
Product Serial Number............................................................................................................................................................................... 7
Measurement Units .....................................................................................................................................................................................7
PRODUCT DESCRIPTION .........................................................................................................................................................................................7
HAND TOOLS NEEDED FOR INSTALLATION ..................................................................................................................................................7
Table 1.1. Required Hand Tools ............................................................................................................................................................7
Figure 1.1. EntelliGuard G Power Circuit Breaker Features and Characteristics......................................................................8
SECTION 2 –PRODUCT SPECIFICATIONS
Table 2.1. Environmental Conditions...............................................................................................................................................................9
Table 2.2. EntelliGuard G Short Circuit and Interrupting Ratings: ANSI/UL1066 ......................................................................9
Table 2.3. EntelliGuard G Short Circuit and Interrupting Ratings: UL489 ..................................................................................... 9
Table 2.4. EntelliGuard G Non-Automatic Circuit Breaker: ANSI Version................................................................................... 10
Table 2.5. EntelliGuard G Non-Automatic Circuit Breaker/Molded Case Switch: UL Version ......................................... 10
Table 2.6. Key to Tables 2.2 Through 2.5.................................................................................................................................................... 10
Table 2.7. Agency Certification ........................................................................................................................................................................ 10
Table 2.8. Product Dimensions and Weights –ANSI/UL..................................................................................................................... 11
SECTION 3 –LIFTING, MOUNTING AND INSTALLATION
CIRCUIT BREAKER UNPACKING........................................................................................................................................................................ 12
BASIC CIRCUIT BREAKER CONSTRUCTION ............................................................................................................................................. 12
LIFTING AND MOUNTING .................................................................................................................................................................................... 13
Using a Lifting Truck................................................................................................................................................................................. 13
Drawout Cassette Lifting, Mounting and Installation............................................................................................................. 13
Circuit Breaker Installation in to the Cassette............................................................................................................................ 13
Drawout Circuit Breaker Installation into the Cassette......................................................................................................... 13
Circuit Breaker Removal from the Cassette ................................................................................................................................ 15
Fixed-Mounted Circuit Breaker Mounting .................................................................................................................................... 16
TRIP UNIT ................................................................................................................................................................................................................... 16
General Information................................................................................................................................................................................. 16
Trip Unit Installation ................................................................................................................................................................................. 16
WIRING ......................................................................................................................................................................................................................... 17
Table 3.1. Wiring Schematic for Block-A ....................................................................................................................................... 17
Table 3.2. Wiring Schematic for Block-B ....................................................................................................................................... 17
Table 3.3. Wiring Schematic for Block-C ....................................................................................................................................... 17
Table 3.4. Electronic Interlock ............................................................................................................................................................. 18
Table 3.5. Wiring Schematic Nomenclature Definitions........................................................................................................ 18
SECONDARY DISCONNECT BLOCKS .............................................................................................................................................................. 19
Table 3.6. Terminal Wiring..................................................................................................................................................................... 19
SELECTIVITY/BACKUP PROTECTION............................................................................................................................................................... 19
SECTION 4 –OPERATION
STORED ENERGY MECHANISM KEY FEATURES......................................................................................................................................... 20
Table. 4.1. Stored Energy Mechanism Sequences of Operation ....................................................................................... 20
Circuit Breaker Charging........................................................................................................................................................................ 20
Two Step Mechanism Design .............................................................................................................................................................. 20
CLOSING SPRING DISCHARGE PROCEDURE.............................................................................................................................................. 21
Table 4.2. Cassette Operating Positions ........................................................................................................................................ 21
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DEH-41304C EntelliGuard® G Circuit Breaker
13 March 14 Table of Contents
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CLOSING PROCEDURE .....................................................................................................................................................................................................21
CONDITIONS WHEN CLOSING CANNOT OCCUR ................................................................................................................................................21
CIRCUIT BREAKER OPENING PROCEDURE.............................................................................................................................................................21
SECTION 5 –LOCKS AND INTERLOCKS
GENERAL INFORMATION ................................................................................................................................................................................................22
CIRCUIT BREAKER FRONT PANEL LOCKING ..........................................................................................................................................................22
Pushbutton Locking ..........................................................................................................................................................................................22
Key Lock for Breaker Trip Free Condition ..............................................................................................................................................23
DRAWOUT CASSETTE FRONT PANEL LOCKING...................................................................................................................................................23
Security Locking..................................................................................................................................................................................................23
Isolation Shutters Locking (If Installed) ...................................................................................................................................................23
Door Interlock Installation .............................................................................................................................................................................24
KEY LOCKS AND INSTALLATION..................................................................................................................................................................................25
TWO-BREAKER CABLE INTERLOCK INSTALLATION ...........................................................................................................................................25
Vertical Mounting...............................................................................................................................................................................................25
Horizontal Mounting.........................................................................................................................................................................................26
SAFETY SHUTTERS INSTALLATION.............................................................................................................................................................................26
Table 5.1: Fixed-Mounted Circuit Breaker Locking...........................................................................................................................26
Table 5.2: Drawout Circuit Breaker Locking.........................................................................................................................................26
SECTION 6 –ACCESSORIES DESCRIPTION
GENERAL INFORMATION ................................................................................................................................................................................................27
INDIVIDUAL ACCESSORIES.............................................................................................................................................................................................27
Motorized Spring Charging Unit .................................................................................................................................................................27
Table 6.1. Motor Operators ..............................................................................................................................................................27
Circuit Breaker Closing Coils –Standard and Commanded........................................................................................................28
Table 6.2. Closing Coil Characteristics .......................................................................................................................................28
Command Operation Module......................................................................................................................................................................28
Shunt Trip (ST) ......................................................................................................................................................................................................28
Table 6.3. Extended Range Shunt Trip for UL Ground Fault and ANSI DC Rating Applications ...................28
Status Indication Switch (Coil Signaling Contact)..............................................................................................................................28
Table 6.4. Coil Signaling Contact Module .................................................................................................................................28
Under Voltage Release (UVR) with Fixed Time Delay.......................................................................................................................28
Table 6.5. UVR Operating Characteristics ................................................................................................................................29
Time Delay Module (TDM) for UVR (Externally Mounted) ...............................................................................................................29
Table 6.6. TDM Characteristics.......................................................................................................................................................29
Remote Operation Coil Combination.......................................................................................................................................................29
Table 6.7. Remote Operation Coil Combination....................................................................................................................29
Auxiliary Switches ..............................................................................................................................................................................................29
Table 6.8. Auxiliary Switches ...........................................................................................................................................................29
Table 6.9. Auxiliary Switch Ratings and Secondary Disconnect Points....................................................................29
Circuit Breaker –Key Interlock Facility....................................................................................................................................................30
Table 6.10. Key Interlocks and Door Interlocks .....................................................................................................................30
Carriage Position Switch (TOC) ....................................................................................................................................................................30
Table 6.11. Carriage Position Switches......................................................................................................................................30
Table 6.12. Carriage Position Switch Ratings (Common NO/NC Contact Configuration.................................30
Mechanical Interlocks (Cable/Rod)............................................................................................................................................................30
Table 6.13. Mechanical Interlocks (Cable/Rod)......................................................................................................................30
Cables.......................................................................................................................................................................................................................30
Table 6.14. Cables for Mechanical Interlocks.........................................................................................................................30
Table 6.15. Interlock Configurations ...........................................................................................................................................31
Bell Alarm with Lockout ..................................................................................................................................................................................31
Bell Alarm Switches...........................................................................................................................................................................................31
Table 6.16. Bell Alarm Switches........................................................................................................................................................31
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Table of Contents 13 March 2014
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Table 6.17. Bell Alarm Ratings (Common NO/NC Contact Configuration) ................................................................ 31
Charging Spring Status Indicator.............................................................................................................................................................. 32
Table 6.18. Spring Charged Contact (1 NO) ............................................................................................................................ 32
Secondary Disconnects (Factory-Installed/Field Installable) ..................................................................................................... 32
Table 6.19. Block Location ............................................................................................................................................................... 32
Table 6.20. Secondary Disconnect Parts.................................................................................................................................. 32
Ground Fault ........................................................................................................................................................................................................ 32
Table 6.21. Neutral Rogowski CTs.........................................................................................................................................32-33
Ready to Close Contact .................................................................................................................................................................................. 33
Table 6.22. Ready to Close Contacts (1NO) ............................................................................................................................. 33
Sealed Door Panel Escutcheon.................................................................................................................................................................. 33
Mechanical Operations Counter................................................................................................................................................................ 33
Table 6.23. Miscellaneous Accessories ..................................................................................................................................... 33
Cassette Substructure .................................................................................................................................................................................... 33
Position Indicators............................................................................................................................................................................................. 33
Rejection Device................................................................................................................................................................................................. 33
Front Flat Terminations .................................................................................................................................................................................. 33
Table 6.24. Optional Front Flat Terminations......................................................................................................................... 33
SECTION 7 –ACCESSORIES INSTALLATION
CIRCUIT BREAKER FRONT COVER REMOVAL ....................................................................................................................................................... 34
MOTOR OPERATOR –SPRING CHARGING UNIT INSTALLATION................................................................................................................. 34
SHUNT TRIP, CLOSING COIL AND UNDER VOLTAGE RELEASE DEVICE INSTALLATION .................................................................. 35
Closing Coil Installation .................................................................................................................................................................................. 35
Closing Coil Removal ....................................................................................................................................................................................... 35
NETWORK INTERLOCK INSTALLATION.................................................................................................................................................................... 35
Trip Alarm/Bell Alarm Switch Installation ............................................................................................................................................. 35
Ready to Close Switch Installation ........................................................................................................................................................... 35
SHUTTER PROP OPEN FEATURE ................................................................................................................................................................................. 35
CARRIAGE POSITION SWITCH INSTALLATION ..................................................................................................................................................... 36
BUSBAR/CABLE GROUNDING (OPTIONAL) ............................................................................................................................................................ 36
CLUSTERS .............................................................................................................................................................................................................................. 36
Upper Cluster Contact Set Grounding.................................................................................................................................................... 37
Lower Cluster Contact Set Grounding.................................................................................................................................................... 37
MECHANICAL TRIP ALARM INSTALLATION............................................................................................................................................................ 37
MECHANICAL OPERATIONS COUNTER INSTALLATION (OPTIONAL) ......................................................................................................... 38
REJECTION FEATURE........................................................................................................................................................................................................ 38
SECTION 8 –MAINTENANCE, TESTING AND TROUBLESHOOTING
MAINTENANCE .................................................................................................................................................................................................................... 39
Inspection Schedule......................................................................................................................................................................................... 39
Cleaning Procedure.......................................................................................................................................................................................... 39
Contact Wear Indicator Inspection (Optional).................................................................................................................................... 39
Circuit Breaker Main Mechanism Inspection ...................................................................................................................................... 40
Cassette Inspection.......................................................................................................................................................................................... 40
Isolating Contacts (Drawout Type) Inspection ................................................................................................................................... 40
Power Terminals and Busbar Inspection.............................................................................................................................................. 40
Lubrication ............................................................................................................................................................................................................ 40
TRIP UNIT TESTING............................................................................................................................................................................................................ 40
Trip Unit Testing .................................................................................................................................................................................................... 40
TROUBLESHOOTING......................................................................................................................................................................................................... 41
PUBLICATIONS .................................................................................................................................................................................................................... 42
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DEH-41304C EntelliGuard® G Circuit Breaker
13 March 14 Section 1 –General Information
©2012 General Electric All Rights Reserved 7
SECTION 1 –GENERAL INFORMATION
STORAGE
CAUTION
PRODUCT DAMAGE
Do not store circuit breaker in corrosive
environments above LC1 (sea salt mist) and G1 as
per ANSI/ISA-S71.04-1985.
Ensure circuit breakers and cassettes are stored in a
clean, dry location in their original packaging.
Failure to comply with these instructions may result
in product damage.
INTRODUCTION
Quality Assurance
All EntelliGuard G circuit breakers have been designed
and manufactured to the highest technical standards.
Strict procedures ensure first class product quality.
Options Check Sheet
Each circuit breaker comes with a detailed factory-
assembled side label that lists all optional features
included on both the circuit breaker and on the trip unit.
Product Serial Number
Please have the serial number available when
communicating about the circuit breaker. Each circuit
breaker has a unique serial number located on the left
side (viewed from front) of the front fascia.
Measurement Units
All data in this document is specified in conventional
metric/SI units.
All internal/external accessory and external
cable/bus bar connections are metric for both IEC
and UL/ANSI versions.
PRODUCT DESCRIPTION
The EntelliGuard G Circuit Breaker is suitable for
application on power systems up to 1000 Vac 50/60 Hz
systems and up to 750 Vdc as a main/source breaker,
feeder breaker, bus coupler or tie breaker. See Section 2
for complete product specifications.
Figure 1.1 shows a front view of the EntelliGuard G. The
indicated features are referenced in this document.
HAND TOOLS NEEDED FOR INSTALLATION
Table 1.1 provides a list of the hand tools required to
install, operate and maintain the EntelliGuard G Circuit
Breaker.
Table 1.1. Required Hand Tools
Tool Name
Function
Cluster pliers (two pairs, each with a different
gap, are supplied under Cat. No. GUNI)
To remove primary contacts for inspection and maintenance.
Screwdriver (8 mm)
To operate racking shutter drive.
Allen wrench (5 mm)
To remove arc chutes for inspection and maintenance.
To remove or adjust fixed and moving arcing contacts.
To remove mechanism.
Allen wrench key (4 mm)
To remove motor and gearbox mounting screws.
Metric feeler gauges
To check and adjust arcing contact gaps.
Pozidrive terminal screwdriver
To remove mechanical and electronic component mounting screws.
To connect wiring to secondary isolating contact terminals.
Pozidrive screwdriver (#1 and #3)
To remove front cover mounting screws.
To remove Rogowski coil and Power current transformer cover plate at the
rear of the circuit breaker moving portion.
Full Set of Metric Hex Allen Wrenches and
Socket Set
To remove PMU base, auxiliary switch assembly, etc.
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DEH-41304C EntelliGuard® G Circuit Breaker
13 March 14 Section 2 –Product Specifications
©2012 General Electric All Rights Reserved 9
SECTION 2 –PRODUCT SPECIFICATIONS
WARNING
IMPROPER INSTALLATION, OPERATION AND
MAINTENANCE
Ensure only qualified personnel install, operate, service
and maintain all electrical equipment.
Failure to comply with these instructions could
result in death or serious injury.
Table 2.1. Environmental Conditions
Characteristic
Parameter
Temperature:
Operating
Ambient (surrounding circuit breaker)
Storage
-5 ºC to 70 ºC
-20 ºC to -5 ºC
-40 ºC to 70 ºC
Humidity
20% RH to 95% RH
Salt fog
per ASTM-B117
Vibration (random and sinusoidal)
1 G max., 50 Hz to 500 Hz in X, Y, Z directions
Fungus resistance
per ASTM G21
Voltage and current de-rating at altitude above sea level
per ANSI C37.20.1, Tables 2 and 3
Noise level
<30 dB
Endurance:
closing coil, Shunt trip
motor operator, under voltage release, accessories
20,000 operations
12,500 operations
Table 2.2. EntelliGuard G Short Circuit and Interrupting Ratings: ANSI/UL1066
Interrupting Rating Tier ANSI/UL1066 Devices, LVPCB
Envelope 1
Envelope 2
Envelope 3
Type
240 V
480 V
600 V
1/2S Withstand
400,
800,
1200
400, 800,
1600,
2000
3200
400-3200
3200
4000-5000
S
65,000
65,000
50,000
50,000
X
N
65,000
65,000
65,000
65,000
X
X
H
85,000
85,000
65,000
85,000
X
P
100,000
100,000
65,000
65,000
X
E
85,000
85,000
85,000
85,000
X
M
100,000
100,000
85,000
85,000
X
X
B
100,000
100,000
100,000
100,000
X
X
L
150,000
150,000
100,000
100,000
X
X
W
200,000
200,000
100,000
100,000
X
X
Table 2.3. EntelliGuard G Short Circuit and Interrupting Ratings: UL489
Interrupting Rating Tier ANSI/UL1066 Devices, LVPCB
Envelope 1
Envelope 2
Envelope 3
Type
240 V
480 V
600 V
1/2S Withstand
400-
1200
400-2000
2500-3000
400-3000
3000
4000
5000-
6000
S
65,000
65,000
50,000
42,000
X
N
65,000
65,000
65,000
42,000
X
X
H
85,000
85,000
65,000
50,000
X
X
P
100,000
100,000
65,000
50,000
X
M
100,000
100,000
85,000
65,000
X
X
X
L
150,000
150,000
100,000
85,000
X
X
X
W
200,000
200,000
100,000
85,000
X
X
X
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EntelliGuard® G Circuit Breaker DEH-41304C
Section 2 –Product Specifications 13 March 14
10 ©2012 General Electric All Rights Reserved
Table 2.4. EntelliGuard G Non-Automatic Circuit Breaker: ANSI Version*
Envelope
Type
Amps
Rated
Interrupting
Current
Rated Endurance
Minimum Mechanical
Endurance
Minimum Electrical
Endurance at 480 V
Minimum Electrical
Endurance at 600 V
1
S
800
42
12,500
10,000
7,500
1
N
800
42
12,500
10,000
7,500
1
N
1600
42
12,500
10,000
7,500
1
N
2000
42
12,500
7,500
5,000
2
M
3200
65
5,000
5,000
5,000
3
B
4000
100
5,000
3,000
2,000
3
B
5000
100
5,000
2,000
1,500
Table 2.5. EntelliGuard G Non-Automatic Circuit Breaker/Molded Case Switch: UL Version*
Envelope
Type
Amps
Short
Interrupting
Current (kA)
Rated Endurance
Minimum Mechanical
Endurance
Minimum Electrical
Endurance at 480 V
Minimum Electrical
Endurance at 600 V
1
S
800
42
12,500
10,000
7,500
1
S
1200
42
12,500
10,000
7,500
1
N
800
42
12,500
10,000
7,500
1
N
1600
42
12,500
10,000
7,500
1
N
2000
42
12,500
7,500
5,000
2
M
3000
65
5,000
5,000
5,000
3
B
4000
100
5,000
3,000
2,000
3
B
5000
100
5,000
3,000
1,500
3
B
6000
100
5,000
1,500
1,000
* GE internal quality testing requirements exceeded 20,000 mechanical and electrical operations.
Table 2.6. Key to Tables 2.2 through 2.5
Type
Description
Type
Description
E
Sq. Rated (ICW = ICU) 400 A to 2000 A, 85 kAIC at 480/508 V
H
85 kAIC at 480/508 V; 65 kAIC at 600/635 V
B
Sq. Rated (ICW = ICU) 3200 A to 6000 A, 100 kAIC at 480/508 V
M
100 kAIC at 480/508 V; 85 kAIC at 600/635 V
N
65 kAIC at 480/508/600/635 V
L
150 kAIC at 480/508 V; 100 kAIC at 600/635 V
W
200 kAIC at 480/508 V; 100 kAIC at 600/635 V
Table 2.7. Agency Certification (All industry standards referenced in this table are the latest version at the time the
product is sold.)
Standard Number
Title
ANSI C37.13,16,17, 20, 50
Low-voltage AC Power Circuit Breakers
NEMA SG 3, 5
Low-voltage Power Circuit Breakers
NEMA AB1
UL 1008*
Automatic Transfer Switches
UL 1066
Low voltage AC and DC Power Circuit Breakers Used in Enclosures
UL 489
Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures
CSA 22.2, No 5.1
Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures
IEC 60947 Part 1
Low Voltage Switchgear and Control Gear - General Rules
IEC 60947 Part 2
Low Voltage Switchgear and Control Gear - Circuit-Breakers
IEC 60947 Part 5
Low Voltage Switchgear and Control Gear - Accessories
IEC 60947 Part 3
Low Voltage Switchgear and Control Gear - Switches, Disconnects, Switch-Disconnects and
Fuse-Combination Units
IEC Environmental: 68-2-1,-2,-3,-6,-11,-
14,-14,-27,-29,-30,-31
IEC Environmental: 721
GB14048
China standards and CCC Mark
ABS (American Bureau of Shipping
Germanischer Lloyds
CUL
Low-voltage AC Power Circuit Breakers
*Suitable for use in UL1008 applications.
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DEH-41304C EntelliGuard® G Circuit Breaker
13 March 14 Section 2 –Product Specifications
©2012 General Electric All Rights Reserved 11
Table 2.8. Product Dimensions and Weights –ANSI/UL
Type
Design
Width
Depth
Height
Weight
in.
mm
in.
mm
in.
mm
lbs.
kg
3-pole
Envelope 1, Top Mounted, UL/ANSI
Fixed breaker - back connected
13.50
343
17.17
436
17.40
442
136.7
62
Drawout breaker - Moving portion
13.07
332
16.34
415
17.24
438
149.9
68
Cassette/substructure
13.50
343
20.83
529
17.44
443
110.2
50
Envelope 1, Side Mounted, UL/ANSI
Fixed breaker - back connected
16.14
410
17.17
436
15.98
406
136.7
62
Drawout breaker - Moving portion
15.35
390
16.34
415
15.83
402
149.9
68
Cassette/substructure
15.83
402
20.83
529
15.98
406
110.2
50
Envelope 2, Up to 2000A, UL/ANSI
Fixed breaker - back connected
17.17
436
17.17
436
17.40
442
165.3
75
Drawout breaker - Moving portion
17.01
432
16.34
415
17.24
438
176.4
80
Cassette/substructure
17.44
443
20.83
529
17.44
443
114.6
52
Envelope 2, Up to 3000A, UL
Fixed breaker - back connected
17.17
436
22.17
563
17.40
442
253.5
115
Drawout breaker - Moving portion
17.01
432
16.34
415
17.24
438
209.4
95
Cassette/substructure
17.44
443
26.14
664
17.44
443
231.5
105
Envelope 2, Up to 3200A, ANSI
Fixed breaker - back connected
17.17
436
22.17
563
17.40
442
275.6
125
Drawout breaker - Moving portion
17.01
432
16.34
415
17.24
438
209.4
95
Cassette/substructure
17.44
443
26.14
664
17.44
443
246.9
112
Envelope 3, Up to 4000A, ANSI/UL
Fixed breaker - back connected
28.98
736
17.17
436
17.40
442
286.6
130
Envelope 3, Up to 5000A ANSI / 6000A UL
Fixed breaker - back connected
28.98
736
22.17
563
17.40
442
463.0
210
Envelope 3, All Ratings
Drawout breaker - Moving portion
28.82
732
16.34
415
17.24
438
330.7
150
Cassette/substructure
29.25
743
26.14
664
17.44
443
396.8
180
Envelope 3-200kA, All Ratings
Drawout breaker - Moving portion
28.82
732
16.34
415
17.24
438
339.5
154
Cassette/substructure
29.25
743
26.14
664
20.47
520
407.8
185
4-pole
Envelope 1, Top Mounted, UL/ANSI
Fixed breaker - back connected
17.44
443
17.17
436
17.40
442
180.8
82
Drawout breaker - Moving portion
17.01
432
16.34
415
17.24
438
198.4
90
Cassette/substructure
17.44
443
20.83
529
17.44
443
143.3
65
Envelope 1, Side Mounted, UL/ANSI
Fixed breaker - back connected
20.08
510
17.17
436
15.98
406
180.8
82
Drawout breaker - Moving portion
19.29
490
16.34
415
15.83
402
198.4
90
Cassette/substructure
19.76
502
20.83
529
15.98
406
143.3
65
Envelope 2, Up to 2000A, UL/ANSI
Fixed breaker - back connected
22.28
566
17.17
436
17.40
442
220.5
100
Drawout breaker - Moving portion
22.13
562
16.34
415
17.24
438
242.5
110
Cassette/substructure
22.56
573
20.83
529
17.44
443
154.3
70
Envelope 2, Up to 3000A, UL
Fixed breaker - back connected
22.28
566
22.17
563
17.40
442
330.7
150
Drawout breaker - Moving portion
22.13
562
16.34
415
17.24
438
275.6
125
Cassette/substructure
22.56
573
26.14
664
17.44
443
308.6
140
Envelope 2, Up to 3200A, ANSI
Fixed breaker - back connected
22.28
566
22.17
563
17.40
442
363.8
165
Drawout breaker - Moving portion
22.13
562
16.34
415
17.24
438
275.6
125
Cassette/substructure
22.56
573
26.14
664
17.44
443
330.7
150
Envelope 3, Up to 4000A, ANSI/UL
Fixed breaker - back connected
38.03
966
22.17
563
17.40
442
385.8
175
Envelope 3, Up to 5000A ANSI / 6000A UL
Fixed breaker - back connected
38.03
966
22.17
563
17.40
442
617.3
280
Envelope 3, All Ratings
Drawout breaker - Moving portion
37.87
962
16.34
415
17.24
438
440.9
200
Cassette/substructure
38.31
973
26.14
664
17.44
443
529.1
240
Envelope 3-200kA, All Ratings
Drawout breaker - Moving portion
37.87
962
16.34
415
17.24
438
451.9
205
Cassette/substructure
38.31
973
26.14
664
20.47
520
542.3
246
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EntelliGuard® G Circuit Breaker DEH-41304C
Section 3 –Lifting, Mounting and Installation 13 March 14
12 ©2012 General Electric All Rights Reserved
SECTION 3 –LIFTING, MOUNTING AND
INSTALLATION
WARNING
IMPROPER INSTALLATION, OPERATION AND
MAINTENANCE
Ensure only qualified personnel install, operate, service
and maintain all electrical equipment.
Failure to comply with these instructions could
result in death or serious injury.
WARNING
FALLING OBJECT
Ensure lifting equipment has capability for device
being lifted.
Wear hard hat, gloves and safety shoes.
Failure to comply with these instructions could
result in death or serious injury.
CAUTION
PRODUCT DAMAGE
Ensure circuit breaker and its accessories are
always used within their designated ratings.
Do not allow the circuit breaker to hit a hard
surface while handling.
Do not drag or slide the circuit breaker across a
hard or rough surface.
Failure to comply with these instructions may result
in product damage.
NOTICE
A factory-installed rejection feature prevents
mismatching circuit breakers and
cassettes/substructures, preventing the insertion of a
circuit breaker with a lower rating into a higher rated
cassette/substructure, or the insertion of a higher
rated circuit breaker into a lower rated
cassette/substructure.
CIRCUIT BREAKER UNPACKING (Fig. 3.1)
1. Inspect the shipping container for obvious signs of
rough handling and/or external damage incurred during
transportation.
2. Record any observed damage for reporting to the
carrier. Ensure all recorded reports and claims include
the order number and name plate information.
3. Remove the banding straps and lift off the top cover.
4. Remove all packaging material.
5. Remove all product documentation and store properly.
6. Unscrew the mounting screws that fasten the circuit
breaker to the bottom of the shipping palette and
remove the circuit breaker.
Figure 3.1. Unpacking the Circuit Breaker
BASIC CIRCUIT BREAKER CONSTRUCTION (Figs. 3.2 and
3.3)
Figure 3.2. Circuit Breaker Construction A
Figure 3.3. Circuit Breaker Construction B
EntelliGuard G circuit breakers consist of rigid front and rear
housings made of thermoset composite resins which
provide high structural strength and excellent dielectric
properties. These housings enclose a contact system
consisting of a moving portion and a fixed portion:
Moving portion: comprised of multiple finger assemblies
connected to a conductor through flexible copper
connections. The number of finger assemblies depends
on the circuit breaker’s continuous and short circuit
ratings. Each finger assembly has an arcing contact and
a main contact.
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DEH-41304C EntelliGuard® G Circuit Breaker
13 March 14 Section 3 –Lifting, Mounting and Installation
©2012 General Electric All Rights Reserved 13
Fixed portion: consists of a main fixed contact which is
brazed to a conductive pad, and arc runner which is
fastened to the conductive pad which guides the arc to
the arc chamber.
Each pole has an arc chamber comprised of arc chamber
molds which houses the de-ion plates and filtering system.
The pole configuration depends upon the breaker frame
size. For larger frames, the two pole units are connected
mechanically in parallel to form one phase.
The operating mechanism is mounted on the front housing.
The energy stored in the mechanism is used to close the
contact system. The mechanism is coupled to each pole by
a common layshaft/drive shaft.
The global trip unit measures CT current and compares the
output with set parameters. It gives a trip command during
overload and short circuit to trip the breaker within a
specified time, circuit monitors the current passing through
the circuit breaker and keeps a history of faults.
The fascia has interface buttons and features for safety
locks.
The cassette, which is used for drawout breakers, consists
of a mechanism which enables the circuit breaker to be
racked in and out, and houses the interlocks.
The front panel on the cassette has three markings which
indicate whether the breaker is in the CONNECTED, TEST or
DISCONNECTED position.
LIFTING AND MOUNTING
Using a Lifting Truck
Circuit breaker removal can be made easier by using a
specifically-designed lifting truck (Fig. 3.4). Contact the
nearest sales office for availability.
Figure 3.4. Lifting Truck
Drawout Cassette Lifting, Mounting and Installation
1. Place the cassette on a rigid, leveled appropriate
support on the switchboard. If a handling truck or
other lifting gear is used, install four. M10 lifting bolts
on to the M10 nuts available on the cassette channels
as shown in Fig. 3.5. Use all four lifting bolts at front
and rear of the cassette.
Figure 3.5. Cassette Lifting
A
ALifting eyes
2. Mount the cassette on to the switch board using six M8
bolts, nuts and lock washers through the mounting
holes shown in Fig. 3.6. Do not tighten.
3. Ensure the cassette side walls are square to the switch
board.
4. Tighten the mounting bolts to a torque of 25 N m at
the front and rear mounting points (Fig. 3.6).
Figure 3.6. Cassette Mounting
AA
Left Right
A M8 bolts
5. Ensure there is minimal deflection/stress to the back of
the cassette when connecting busbars.
6. Connect the incoming and outgoing cables/busbars.
7. Ensure any safety shutters move freely after the
cassette is installed.
Drawout Circuit Breaker Installation into the Cassette
1. Pull the lifting handles on both side walls of the circuit
breaker.
2. Attach the lifting bar between the two holes of the lifting
eyes as shown in Fig. 3.7.
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EntelliGuard® G Circuit Breaker DEH-41304C
Section 3 –Lifting, Mounting and Installation 13 March 14
14 ©2012 General Electric All Rights Reserved
Figure 3.7. Circuit Breaker Lifting
3. Remove any padlocks and keep the key in place for key
locks if applied from the racking panel of the cassette.
4. Ensure the cassette position indicator shows
DISCONNECTED and the racking handle is disengaged.
5. Ensure the cassette racking cams on both side walls of
the cassette are in the completely racked out position
as shown in Fig. 3.8.
Figure 3.8. Racking Drive in the DISCONNECTED Position
6. Pull out the cassette rails until they drop into the
horizontal locked position.
7. Lower the circuit breaker gradually so that the rollers
drop over the rails. Ensure the grooves in all rollers
straddle the rails as shown in Fig. 3.9.
Figure 3.9. Circuit Breaker Rollers Straddled on the
Loading Rails
8. Using the hand grips on either side, remove the lifting
bar and push the circuit breaker into the cassette until
it reaches a positive stop (the rollers on circuit breaker
are engaged with the racking cams of the cassette on
both sides). The circuit breaker is now in the
DISCONNECTED position (Fig. 3.10).
Figure 3.10. Circuit Breaker in Disconnected Position.
9. Push back both the extended rails of the cassette to the
stowed position.
10. If the circuit breaker is ON and the springs are charged,
press the OFF button on the circuit breaker fascia and
ensure the circuit breaker contacts are open (Fig. 3.11).
Figure 3.11. Setting the Circuit Breaker to OFF
11. Remove the racking tool from the storage location on
the cassette front panel by grabbing the handle (Fig.
3.12).
Figure 3.12. Racking Handle Storage Location
12. Pull out the torque bar from inside the handle and
extend (Fig. 3.13).
Figure 3.13. Racking Handle Extended
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DEH-41304C EntelliGuard® G Circuit Breaker
13 March 14 Section 3 –Lifting, Mounting and Installation
©2012 General Electric All Rights Reserved 15
13. With a screwdriver, turn the racking handle shutter
drive A clockwise (Fig. 3.14).
Figure 3.14. Racking Handle Shutter Drive Location
14. Insert the racking handle in the handle insertion hole
on the cassette front panel.
15. Rotate clockwise to rack the circuit breaker into the
cassette. As the breaker approaches the TEST position
check the alignment of the fixed and moving parts of
the secondary circuit isolating contacts (Fig. 3.15).
Figure 3.15. Turning the Racking Handle
16. Continue rotating the racking handle clockwise until
the position indicator first shows TEST, then
CONNECTED. When approaching the CONNECTED
position, effort to turn the racking handle will increase
as the clusters engage with the cassette-mounted
contacts. If a motor spring charge or under voltage to
release is installed, these may operate when
approaching the TEST position.
17. Remove and store the racking handle in its storage
location.
18. The circuit breaker is now ready for normal operation.
Circuit Breaker Removal from the Cassette
DANGER
ELECTROCUTION
Ensure the circuit breaker has been tripped, indicating
OFF, and the main springs are fully discharged.
Do not touch the circuit breaker’s isolating contacts
during lifting.
Failure to comply with these instructions will result in
death or serious injury.
1. Repeat Steps 10 through 13 as explained in the previous
section. Insert the racking handle in the handle insertion
hole on the cassette front panel
2. Rotate counter clockwise to rack the circuit breaker out
of the cassette. As the circuit breaker approaches the
TEST position, check the alignment of the fixed and
moving parts of the secondary circuit isolating contacts.
3. Continue rotating the racking handle counter clockwise
until the position indicator first shows TEST, then
DISCONNECTED.
4. Pull out the cassette rails until they drop into the
horizontal locked position (Fig. 3.16).
Figure 3.16. Cassette Rails Pulled Out for Circuit Breaker
Unloading
5. Using the hand grips on either side, pull the circuit
breaker out of the cassette until it reaches a positive
stop (rollers on the circuit breaker will stop against the
extended rail projection as shown in Fig. 3.17).
Figure 3.17. Circuit breaker Pulled Out of the Cassette for
Unloading
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EntelliGuard® G Circuit Breaker DEH-41304C
Section 3 –Lifting, Mounting and Installation 13 March 14
16 ©2012 General Electric All Rights Reserved
6. Attach the lifting bar to remove the circuit breaker.
Fixed-Mounted Circuit Breaker Mounting
1. Ensure adequate clearance above the circuit breaker
to allow removal of the arc chutes and inspection of
the arcing contacts.
2. Mount the circuit breaker into position, using the
mounting location shown in Fig. 3.18 and four M8
bolts, on a suitable support structure using. Torque to
25 N m. A clearly-marked grounding point is provided
on either side of the circuit breaker.
Figure 3.18. Mounting Location
A
AMounting Location
TRIP UNIT
General Information
All EntelliGuard G power circuit breakers are equipped with
a digital electronic trip unit available in four basics versions
E, S, N, and H.
Each trip unit has a screen that provides an ammeter and a
menu-driven adjustment of the breaker parameters across
a broad current range. The menu has four settings and one
enter key, allowing fast and accurate setting of the device
(Fig. 3.19).
Figure 3.19. Trip Unit
Trip Unit Installation
1. The trip unit is mounted on the PMU base. Press the
lever and align the trip unit as shown in Fig. 3.20.
Figure 3.20. Trip Unit Being Mounted on the PMU Base.
2. Insert the trip unit knob on the PMU base as shown in
Fig. 3.21.
Fig 3.21. Trip Unit Knob
3. Release the lever once the trip unit is inserted. This
action will lock the trip unit to the PMU base as shown in
Fig. 3.22.
Figure 3.22. Trip Unit Alignment
4. Install the front cover as shown in Fig. 3.23.
Fig 3.23. Front Cover Installation
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DEH-41304C EntelliGuard® G Circuit Breaker
13 March 14 Section 3 –Lifting, Mounting and Installation
©2012 General Electric All Rights Reserved 17
WIRING
Tables 3.1 through 3.3 show the wiring schematic for Blocks-A, -B and -C. Table 3.4 provides information on the factory-
installed network interlock feature and is for use by maintenance organizations for optional network interlock connections.
Table 3.5 provides nomenclature definitions for Tables 3.1 through 3.4.
Table 3.1. Wiring Schematic for Block-A (Three Layer Secondary Disconnect with Basic GTU and Basic Accessories)
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
Motor
Motor
Spr NO/
RTC NO
Spr NO/
RTC NO
ST1
ST1
UV1
UV1
CC COM
CC IMM
CC CMD
ST2/
UV2
ST2/
UV2
Max. Current (I)
14.8 A
14.8 A
10 A
10 A
1.9 A
1.9 A
1.9 A
1.9 A
1.9 A
1.9 A
1.9 A
1.9 A
1.9 A
Max. Voltage (V)
440 V
440 V
240 V
240 V
440 V
440 V
440 V
440 V
440 V
440 V
440 V
440 V
440 V
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
NC3
NC3
NC2
NC2
NC1
NC1
NO3
NO3
NO2
NO2
NO1
NO1
-
Max. Current (I)
15 A
15 A
15 A
15 A
15 A
15 A
15 A
15 A
15 A
15 A
1 A
15 A
-
Max. Voltage (V)
440 V
440 V
440 V
440 V
440 V
440 V
440 V
440 V
440 V
440 V
440 V
440 V
-
A27
A28
A29
A30
A31
A32
A33
A34
A35
A36
A37
A38
A39
O/P1a
O/P1b
O/P2a
O/P2b
24 V+
24 V-
BA NC
BA NO
BA COM
N-RC-
N-RC+
Eleg-CT
Eleg-CT
Max. Current (I)
1 A
1A
1 A
1 A
<500 mA
<500 mA
10 A
10 A
10 A
<50 mA
<50 mA
5 A
5 A
Max. Voltage (V)
30 Vdc/
25 Vac
30 dc/
25 Vac
30 Vdc/
25 Vac
30 Vdc/
25 Vac
30 V
30 V
240 V
240 V
240 V
480 mV
480 mV
2 V
2 V
Table 3.2. Wiring Schematic for Block-B (Three Layer Secondary Disconnect to be Added for GTU with Full I/O and
Additional Accessory Signals)
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
INPUT1
INPUT2
I/P
COM
ST1 NO/
NC8
ST1 COM/
NC8
UV1
NO/
NC7
UV1
COM/
NC7
NC6
NC6
NC5
NC5
NC4
NC4
Max. Current (I)
<50 mA
<50 mA
<50 mA
10 A/15 A
10 A/15 A
10 A/15 A
10 A/15 A
15 A
15 A
15 A
15 A
15 A
15 A
Max. Voltage (V)
30 Vdc/
25 Vac
30 Vdc/
25 Vac
30 Vdc/
25 Vac
240 V/
440 V
240 V/
440 V
240 V/
440 V
240 V/
440 V
440 V
440 V
440 V
440 V
440 V
440 V
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
RELT
INPUT
COM
-
CC NO/
NO8
CC COM/
NO8
ST2 NO/
UV2 NO/
NO7
ST2 COM/
UV2
COM/
NO7
NO6
NO6
NO5
NO5
NO4
NO4
Max. Current (I)
<50 mA
<500 mA
-
10 A/
15 A
10 A/
15 A
10 A/
15 A
10 A/
15 A
15 A
15 A
15 A
15 A
15 A
15 A
Max. Voltage (V)
5 V
0.1V
-
240 V/
440 V
240 V/
440 V
240 V/
440 V
240 V/
440 V
440 V
440 V
440 V
440 V
440 V
440 V
B27
B28
B29
B30
B31
B32
B33
B34
B35
B36
B37
B38
B39
ZSI
out+
ZSI
out-
ZSI
in+
ZSI
in-
ISO
GND
5V
ISO
TX EN 1
RX
TX
GND
Volt-IN
Volt-A
Volt-B
Volt-C
Max. Current (I)
<50 mA
<50 mA
<50 mA
<50 mA
<500 mA
<500 mA
<50 mA
<50 mA
<50 mA
<500 mA
<50 mA
<50 mA
<50 mA
Max. Voltage (V)
28 Vdc
28 Vdc
30 Vdc
30 Vdc
0.1 V
5 V
5 V
5 V
5 V
0.1 V
1.76 V
1.76 V
1.76 V
Table 3.3. Wiring Schematic for Block-C (Internal to the breaker, not used by customer.) (Two Layer Intermediate
Secondary Disconnect at the Top for the Side Mounted Secondary Disconnect.)
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
BA
NC
BA
NO
BA
COM
ST1
NO
ST1
COM
UV1
NO
UV1
COM
CC
NO
CC
COM
ST2/
UV2
NO
ST2/
UV2
COM
NO5
NO5
NO4
NO4
NC3
NC3
NC2
NC2
NC1
NC1
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
C33
C34
C35
C36
C37
C38
C39
C40
C41
C42
Spr
NO/
RTC
NO
Spr
NO/
RTC
NO
ST1
ST1
UV1
UV1
CC
COM
CC
IMM
CC
CMD
ST2/
UV2
ST2/
UV2
NC5
NC5
NC4
NC4
NO3
NO3
NO2
NO2
NO1
NO1
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EntelliGuard® G Circuit Breaker DEH-41304C
Section 3 –Lifting, Mounting and Installation 13 March 14
18 ©2012 General Electric All Rights Reserved
Table 3.4. Electronic Interlock
Network Interlock Connections
Network Interlock Status Switch
A5
A6
A7
A8
B4
B5
B6
NI TRIP
NI TRIP
NI RESET
NI RESET
NI NC
NI NO
NI COM
1.9 A
1.9 A
1.9 A
1.9 A
10 A
10 A
10 A
240 V
240 V
240 V
240 V
240 V
240 V
240 V
Table 3.5. Wiring Schematic Nomenclature Definitions
Pin
Nomenclature
Description
Pin
Nomenclature
Description
A1
Motor
power input to motor operator
B1
Input 1
relay input to trip unit
A2
Motor
B2
Input 2
relay input to trip unit
A3
SPR NO/RTC NO
spring charge status contact/
ready to close signaling contact
B3
I/P COM
relay input to trip unit
A4
SPR NO/RTC NO
B4
ST1 NO/NC8
shunt trip 1 signaling contact/normally
open contact 8
A5
ST1
power input to shunt trip 1
B5
ST1 COM/NC8
A6
ST1
B6
UV1 NO/NC7
under voltage release 1 signaling
contact/normally closed contact 7
A7
UV1
under voltage release 1
B7
UV1 COM/NC7
A8
UV1
B8
NC6
normally closed contact 6
A9
CC COM
closing coil neutral wire-common
(CC or CCC)
B9
NC6
A10
CC IMM
closing coil (CC), continuous
control power (CCC)
B10
NC5
normally closed contact 5
A11
CC CMD
closing coil close signal (CCC)
B11
NC5
A12
ST2/UV2
power input to shunt trip 2/under
voltage release 2
B12
NC4
normally closed contact 4
A13
ST2/UV2
B13
NC4
A14
NC3
normally closed contact 3
B14
RELT
RELT signal output
A15
NC3
B15
COM
trip unit communication
A16
NC2
normally closed contact 2
B16
-
-
A17
NC2
B17
CC NO/NO8
closing coil signaling contact/normally
open contact 8
A18
NC1
normally closed contact 1
B18
CC COM/NO8
A19
NC1
B19
ST2 NO/UV2
NO/NO7
shunt trip 2 signaling contact/under
voltage release 2 signaling contact/
normally open contact 7
A20
NO3
normally open contact 3
B20
ST2 COM/UV2
COM/NO7
A21
NO3
B21
NO6
normally open contact 6
A22
NO2
normally open contact 2
B22
NO6
A23
NO2
B23
NO5
normally open contact 5
A24
NO1
normally open contact 1
B24
NO5
A25
NO1
B25
NO4
normally open contact 4
A26
-
-
B26
NO4
A27
O/P1a
relay output 1 from trip unit
B27
ZSI out+
GF zone selective interlock output
A28
O/P1b
relay output 1 from trip unit
B28
ZSI out-
A29
O/P2a
relay output 2 from trip unit
B29
ZSI in+
GF zone selective interlock input
A30
O/P2b
relay output 2 from trip unit
B30
ZSI in-
A31
24 V+
auxiliary power supply to trip unit
B31
ISO GND
trip unit communication
A32
24 V-
B32
5V Iso
A33
BA NC
bell alarm switch
B33
TX EN 1
A34
BA NO
B34
RX
A35
BA COM
B35
TX
A36
N-RC-
neutral Rogowski coil
B36
Voltage Input
GND
ground point for voltage input to trip unit
A37
N-RC+
B37
Volt-A
system phase voltage signals
A38
Eleg-CT
earth leg CT (multi-source ground
fault)
B38
Volt-B
A39
Eleg-CT
B39
Volt-C
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DEH-41304C EntelliGuard® G Circuit Breaker
13 March 14 Section 3 –Lifting, Mounting and Installation
©2012 General Electric All Rights Reserved 19
SECONDARY DISCONNECT BLOCKS
Located for easy customer wiring to the accessories
and to the trip unit:
-Top-mounted for all envelopes.
-Optional side mounting is available for UL
envelope 1.
In case of drawout, by removing one screw, the
cassette-mounted secondary disconnect block can be
tilted in the mounted state and can be removed for
easy control circuit wiring (Fig. 3.24).
Figure 3.24. Secondary Disconnect
Block-A contains a set of 39 self-aligning secondary
circuit isolating contacts. Each contact is clearly
labeled with the connection point. For certain
protection configurations and additional accessories,
an additional block (Block-B) is installed.
Current rating of each terminal is 10 A/240 Vac and
5 A/250 Vdc.
Terminals are suitable for ring or spade terminals and
bare conductors (Table 3.6). Recommended max. width
or diameter of the connector is 7.4 mm.
Connector examples:
-Ring terminals: TYCO-35684 (wire gauge 14-12)
-Spade terminals: TYCO-34384 (wire gauge 12-10)
-Molex-0190690230 (wire gauge 10-12)
Table 3.6. Terminal Wiring
Number of Terminals
78
Terminal capacity
1x
2x
Screw type (bare
conductors)
12 AWG,
solid or stranded
-
Screw type (bare
conductors)
22 AWG to 14 AWG,
0.5 mm² to 2.5 mm²
Ring/spade terminals
20 AWG to 12 AWG
-
SELECTIVITY/BACKUP PROTECTION
The circuit breaker is time-selective with the
downstream ACB and MCCBs up to the lowest of the
breaking capacity of the combination.
Selectivity levels are determined by the selection
settings of short time and instantaneous pickup and
time delay on the Trip Unit.
No backup protection/cascading (series ratings) is
available with this product.
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EntelliGuard® G Circuit Breaker DEH-41304C
Section 4 –Operation 13 March 14
20 ©2012 General Electric All Rights Reserved
SECTION 4 –OPERATION
WARNING
IMPROPER INSTALLATION, OPERATION AND
MAINTENANCE
Ensure only qualified personnel install, operate, service
and maintain all electrical equipment.
Failure to comply with these instructions will result in
death or serious injury.
WARNING
PERSONAL INJURY
Avoid risk of injury from moving parts while handling
the breaker.
If advisable, use a cable/busbar lockable grounding
device (optional accessory) to provide additional safety
during system maintenance.
Failure to comply with these instructions could result in
death or serious injury.
CAUTION
PRODUCT DAMAGE
Ensure circuit breaker and its accessories are always
used within their designated ratings.
Use the specially designed circuit breaker handling
truck (optional accessory) when removing the circuit
breaker from its cassette.
Failure to comply with these instructions may result in
product damage.
STORED ENERGY MECHANISM KEY FEATURES (Table 4.1)
NOTICE
Each charging action provides sufficient charge for an
O-C-O (Open-Close-Open) operation without requiring
additional charging.
The mechanism works properly only when the circuit
breaker is mounted on a horizontal plane with bottom
mounting or on vertical plane with front mounting.
Circuit Breaker Charging
The circuit breaker can be charged in one of two ways:
Manually, using a charging handle.
-The charging handle lies flush within the circuit
breaker front cover. It is easily retracted without
special tools.
-Full spring charging is accomplished with 10 full
pumps or less of the handle. Handle movement
includes suitable stops so that it cannot be over
extended and cause operator injury.
-The handle engages the charging ratchet during
motion away from the circuit breaker front cover
and rotates freely on the return stroke.
Electrically, via a motor operator that is automatically
activated after the closing operation.
Two Step Mechanism Design
The first step charges the closing spring through the
manual charging handle or through the spring
charging motor.
The second step closes the circuit breaker via the
PUSH ON (UL)/CLOSE (ANSI) pushbutton on the front
cover or closes the breaker through energizing the
closing coil.
The mechanism is trip free and incorporates an anti-
pumping system:
-The circuit breaker may be closed only after the
mechanism is fully charged and there is no active
open command.
-The closing coil has an electrical anti-pumping
feature. The coil supply, if maintained
continuously, will attempt to close the circuit
breaker only one time. To achieve a second
closing attempt, the closing coil must be de-
energized and energized a second time.
Table 4.1. Stored Energy Mechanism Sequences of Operation
ON/OFF
Indicator
Main Breaker
Contacts
Charging Spring
Indicator
Condition of
Charging Springs
Next Permissible Operating Function
OFF
open
discharged
discharged
closing springs may be charged
OFF
open
charged
fully charged
contacts may be closed, then opened
ON
closed
discharged
discharged
contacts may be opened or closing springs may be charged
ON
closed
charged
fully charged
pen-closed-open sequence may be carried out and the closing
springs can be charged after the close operation opened
OFF
open
charged
fully charged
closing spring may be discharged without closing contacts
ON
closed
charging
partially charged
complete charging
OFF
open
charging
partially charged
complete charging
Courtesy of store.ips.us
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