GE Industrial Solutions EntelliGuard G User Manual
Installation, Operation,
and Maintenance Manual
Retain for Future Use.
EntelliGuard® G Circuit
Breaker
2 ©2012 General Electric All Rights Reserved
DANGER
WARNING
CAUTION
NOTICE
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.
Indicates a hazardous situation which, if not avoided, will
result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Failure to comply with these instructions may result in
product damage.
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.
©2012 General Electric All Rights Reserved 3
EntelliGuard® G Circuit Breaker DEH-41304C
Table of Contents 13 March 2014
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
4 ©2012 General Electric All Rights Reserved
DEH-41304C EntelliGuard® G Circuit Breaker
13 March 14 Table of Contents
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
©2012 General Electric All Rights Reserved 5
EntelliGuard® G Circuit Breaker DEH-41304C
Table of Contents 13 March 2014
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
6 ©2012 General Electric All Rights Reserved
DEH-41304C EntelliGuard® G Circuit Breaker
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.
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.
13 March 14 Section 1 – General Information
SECTION 1 – GENERAL INFORMATION
STORAGE
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 factoryassembled 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.
Table 1.1. Required Hand Tools
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.
©2012 General Electric All Rights Reserved 7
EntelliGuard® G Circuit Breaker DEH-41304C
Section 1 – General Information 13 March 14
Figure 1.1. EntelliGuard G Power Circuit Breaker Features and Characteristics
8 ©2012 General Electric All Rights Reserved
DEH-41304C EntelliGuard® G Circuit Breaker
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.
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
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
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
13 March 14 Section 2 – Product Specifications
SECTION 2 – PRODUCT SPECIFICATIONS
Table 2.1. Environmental Conditions
Table 2.2. EntelliGuard G Short Circuit and Interrupting Ratings: ANSI/UL1066
Table 2.3. EntelliGuard G Short Circuit and Interrupting Ratings: UL489
©2012 General Electric All Rights Reserved 9
EntelliGuard® G Circuit Breaker DEH-41304C
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
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
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
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
Section 2 – Product Specifications 13 March 14
Table 2.4. EntelliGuard G Non-Automatic Circuit Breaker: ANSI Version*
Table 2.5. EntelliGuard G Non-Automatic Circuit Breaker/Molded Case Switch: UL Version*
* GE internal quality testing requirements exceeded 20,000 mechanical and electrical operations.
Table 2.6. Key to Tables 2.2 through 2.5
Table 2.7. Agency Certification (All industry standards referenced in this table are the latest version at the time the
product is sold.)
*Suitable for use in UL1008 applications.
10 ©2012 General Electric All Rights Reserved
DEH-41304C EntelliGuard® G Circuit Breaker
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
13 March 14 Section 2 – Product Specifications
Table 2.8. Product Dimensions and Weights – ANSI/UL
©2012 General Electric All Rights Reserved 11
EntelliGuard® G Circuit Breaker DEH-41304C
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.
Section 3 – Lifting, Mounting and Installation 13 March 14
SECTION 3 – LIFTING, MOUNTING AND
INSTALLATION
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
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.
12 ©2012 General Electric All Rights Reserved
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.
DEH-41304C EntelliGuard® G Circuit Breaker
A
A Lifting eyes
A
A
Left Right
A M8 bolts
13 March 14 Section 3 – Lifting, Mounting and Installation
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
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
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.
©2012 General Electric All Rights Reserved 13
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