GE Industrial Solutions EntelliGuard E Circuit Breaker User Manual

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GE Energy

Industrial Solutions

EntelliGuard

Circuit Breaker

Installation, Operation, and Maintenance Manual

Retain for Future Use.

Page 2

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™ E EntelliGuard Messenger™ EntelliGuard™ TU Entellisys™

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 Industrial Solutions assumes no obligation of notice to holders of this document with respect to changes subsequently made. GE Industrial Solutions 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 E circuit breaker operation or maintenance.

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Table of Contents

SECTION 1 – GENERAL INFORMATION ......................................................................................................................................................................................6

STORAGE ...........................................................................................................................................................................................................................................6

Introduction .....................................................................................................................................................................................................................................6

Quality Assurance ....................................................................................................................................................................................................................6

Product Serial Number ..........................................................................................................................................................................................................6

Measurement Units .................................................................................................................................................................................................................6

PRODUCT DESCRIPTION .............................................................................................................................................................................................................6

HAND TOOLS NEEDED FOR INSTALLATION .......................................................................................................................................................................6

Table 1.1. Required Hand Tools .........................................................................................................................................................................................6

...............................................................................................................................................................................................................................................................7

Figure 1.1. EntelliGuard E Power Circuit Breaker Features and Characteristics .............................................................................................7

Figure 1.2. EntelliGuard E Power Circuit Breaker Label ...............................................................................................................................................7

SECTION 2 – PRODUCT SPECIFICATIONS .................................................................................................................................................................................8

Table 2.1. Environmental Conditions ...................................................................................................................................................................................8

Table 2.2. EntelliGuard E Short Circuit and Interrupting Ratings: ANSI/UL1066 ..............................................................................................8

Table 2.3. Agency Certification ...............................................................................................................................................................................................8

Table 2.4. Product Dimensions and Weights ...................................................................................................................................................................8

SECTION 3 – LIFTING, MOUNTING AND INSTALLATION.....................................................................................................................................................9

CIRCUIT BREAKER UNPACKING (Fig. 3.1) .............................................................................................................................................................................9

BASIC CIRCUIT BREAKER CONSTRUCTION .........................................................................................................................................................................9

Circuit Breaker Removal from the Cassette ............................................................................................................................................................. 11

TRIP UNIT ........................................................................................................................................................................................................................................ 12

General Information ............................................................................................................................................................................................................ 12

Trip Unit Installation ............................................................................................................................................................................................................. 12

WIRING ............................................................................................................................................................................................................................................ 13

Table 3.1. Wiring Schematic for Block-A .................................................................................................................................................................... 13

Table 3.2. Wiring Schematic Nomenclature Definitions ..................................................................................................................................... 13

SECONDARY DISCONNECT BLOCKS ................................................................................................................................................................................... 15

SECTION 4 – OPERATION .................................................................................................................................................................................................... 16

STORED ENERGY MECHANISM KEY FEATURES .............................................................................................................................................................. 16

Circuit Breaker Charging ................................................................................................................................................................................................... 16 

Two Step Mechanism Design .......................................................................................................................................................................................... 16

Table 4.1. Stored Energy Mechanism Sequences of Operation ...................................................................................................................... 16

CLOSING SPRING DISCHARGE PROCEDURE ................................................................................................................................................................... 16 

Closing procedure ...................................................................................................................................................................................................................... 17

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EntelliGuard® E Circuit Breaker DEH-41526

CONDITIONS WHEN Closing cannot occur .................................................................................................................................................................... 17

CIRCUIT BREAKER OPENING Procedure ........................................................................................................................................................................... 17

Table 4.2. Cassette Operating Positions ..................................................................................................................................................................... 17

SECTION 5 – LOCKS AND INTERLOCKS .................................................................................................................................................................................. 18

GENERAL INFORMATION ......................................................................................................................................................................................................... 18

CIRCUIT BREAKER FRONT PANEL LOCKING .................................................................................................................................................................... 18

Padlock or Scissor Lock for Breaker Trip Free Condition .................................................................................................................................... 18

DRAWOUT CASSETTE FRONT PANEL LOCKING ............................................................................................................................................................. 18

Security Locking ..................................................................................................................................................................................................................... 18

Isolation Shutters Locking (If Installed) ....................................................................................................................................................................... 18

Table 5.1. Drawout Circuit Breaker Locking.............................................................................................................................................................. 19

SECTION 6 – ACCESSORIES DESCRIPTION ............................................................................................................................................................................ 20

INDIVIDUAL ACCESSORIES ..................................................................................................................................................................................................... 20

Motorized Spring Charging Unit ..................................................................................................................................................................................... 20 

Circuit Breaker Closing Coil .............................................................................................................................................................................................. 20

Shunt Trip (ST) ......................................................................................................................................................................................................................... 20

Remote Operation Coil Combination ........................................................................................................................................................................... 20

Auxiliary Switches ................................................................................................................................................................................................................. 21

Circuit Breaker - Key Interlock Facility ........................................................................................................................................................................ 21

Carriage Position Switch (TOC) ........................................................................................................................................................................................ 21

Bell Alarm with Lockout ..................................................................................................................................................................................................... 21

Charging Spring Status Indicator .................................................................................................................................................................................. 21

Secondary Disconnects (Factory-installed/Field Installable) ............................................................................................................................ 21

Cassette/Substructure ........................................................................................................................................................................................................ 22

Position Indicators ................................................................................................................................................................................................................ 22

Rejection Device .................................................................................................................................................................................................................... 22

SECTION 7 – ACCESSORIES INSTALLATION .......................................................................................................................................................................... 23

CIRCUIT BREAKER FRONT COVER REMOVAL .................................................................................................................................................................. 23

MOTOR OPERATOR - SPRING CHARGING UNIT INSTALLATION ............................................................................................................................. 23 

NETWORK INTERLOCK, SHUNT TRIP AND CLOSING COIL DEVICE INSTALLATION ........................................................................................ 24

Shunt Trip & Closing Coil Installation (Fig. 7.4) ......................................................................................................................................................... 24 

Closing Coil Removal ........................................................................................................................................................................................................... 24

NETWORK INTERLOCK INSTALLATION .............................................................................................................................................................................. 24

Bell Alarm Switch Installation ............................................................................................................................................................................................... 24

SHUTTER PROP OPEN FEATURE ........................................................................................................................................................................................... 24

CARRIAGE POSITION SWITCH INSTALLATION ................................................................................................................................................................ 24

CLUSTERS (Primary Disconnect Fingers) ......................................................................................................................................................................... 25 

MECHANICAL Bell ALARM contact INSTALLATION ...................................................................................................................................................... 25

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REJECTION FEATURE ................................................................................................................................................................................................................. 25 

SECTION 8 – MAINTENANCE, TESTING AND TROUBLESHOOTING ............................................................................................................................. 26

MAINTENANCE ............................................................................................................................................................................................................................. 26

Inspection Schedule ............................................................................................................................................................................................................ 26

Cleaning Procedure ............................................................................................................................................................................................................. 26

Contact Wear Indicator Inspection (GCNTW) ........................................................................................................................................................... 26

Circuit Breaker Main Mechanism Inspection ........................................................................................................................................................... 27 

Cassette Inspection ............................................................................................................................................................................................................. 27

Isolating Contacts Inspection .......................................................................................................................................................................................... 27 

Lubrication ............................................................................................................................................................................................................................... 27

TROUBLESHOOTING .................................................................................................................................................................................................................. 28

EntelliGuard® E Publications ................................................................................................................................................................................................. 28 

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EntelliGuard® E Circuit Breaker DEH-41526

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 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 E circuit breakers have been designed and manufactured to the highest technical standards. Strict procedures ensure first class product quality.

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 bottom right side (viewed from front) of the front fascia, see figure 1.2.

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.

PRODUCT DESCRIPTION

The EntelliGuard E power circuit breaker is designed to protect low voltage power circuits when used with Entellisys™ Low-Voltage Switchgear only. The EntelliGuard E circuit breaker must be used in concert with the EntelliGuard Messenger and current transformers mounted within the switchgear cubicle. All EntelliGuard E circuit breakers are designed for draw-out mounting. See Section 2 and the Entellisys Low-Voltage Switchgear application guide, DET-838 for complete product specifications.

Figure 1.1 shows a front view of the EntelliGuard E. 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 E 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) Screwdriver (8 mm)

Allen wrench (5 mm)

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

Pozidrive screwdriver (#1 and #3)

Full Set of Metric Hex Allen Wrenches and Socket Set

To remove primary disconnect finger clusters for inspection and maintenance.

 To operate racking drive shutter.  To remove arc chutes for inspection and maintenance.  To remove or adjust fixed and moving arcing contacts.  To remove mechanism.

 To remove mechanical and electronic component mounting screws.  To connect wiring to secondary disconnect terminals.  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.

 To remove PMU base, auxiliary switch assembly, etc.

Page 7

FIGURE 1.1. ENTELLIGUARD E POWER CIRCUIT BREAKER FEATURES AND CHARACTERISTICS

Secondary disconnect label

Network Interlock Manual Reset

Secondary Disconnects

Bell alarm lockout reset button

Tamper-proof label Complete, factory-assembled catalog number

FIGURE 1.2. ENTELLIGUARD E POWER CIRCUIT BREAKER LABEL

Product Family

Current Rating

Breaker Frame

Short Circuit Ratings

Certification & Standards

Accessory windows

Padlock provision

Retractable handle for manual spring charging

Spring discharge

Operating buttons: OPEN/CLOSE

Breaker status contacts:

Spring charge indicator

Barcode with Manufacturing Data

Breaker Serial Number

Manufacturing Date

Page 8

EntelliGuard® E Circuit Breaker DEH-41526

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:

Ambient for Normal Operation

Ambient at 10% of listed endurance operations inside panel

Storage 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

-5 ºC to 70 ºC, 40 ºC max without derating

-20 ºC to -5 ºC

-40 ºC to 70 ºC

20,000 operations 12,500 operations

TABLE 2.2. ENTELLIGUARD E SHORT CIRCUIT AND INTERRUPTING RATINGS: ANSI/UL1066

Interrupting Rating Tier ANSI/UL1066 Devices, LVPCB

Type 240 V 480 V 600 V 1/2S Withstand

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

Envelope 1 400, 800,

1200

400, 800,

1600,

2000

Envelope 2

3200

400-3200

TABLE 2.3. 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 UL 1066 Low voltage AC and DC Power Circuit Breakers Used in Enclosures CSA 22.2, No 5.1 Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures

TABLE 2.4. PRODUCT DIMENSIONS AND WEIGHTS

Type

Envelope 1 13.07 332 16.34 415 17.24 438 149.9 68

Envelope 2, Up to 2000A 17.01 432 16.34 415 17.24 438 176.4 80

Envelope 2, Up to 3200A 17.01 432 16.34 415 17.24 438 209.4 95

Width Depth Height Weight

in. mm in. mm in. mm lbs. kg

Page 9

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 nameplate 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 pallet and remove the circuit breaker.

Figure 3.1. Unpacking the Circuit Breaker

BASIC CIRCUIT BREAKER CONSTRUCTION Figure 3.2. Circuit Breaker Construction

EntelliGuard E 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.

 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.

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.

Page 10

EntelliGuard® E Circuit Breaker DEH-41526

The trip unit measures current and protects the breaker by providing instantaneous over current override protection.

The fascia has interface buttons and features for safety locks.

The cassette 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. 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. 3.3.

Figure 3.3. Circuit Breaker Lifting

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. 3.5.

Figure 3.5. Circuit Breaker Rollers Straddled on the Loading Rails

8. Remove the lifting bar and push the circuit breaker into

the cassette until it reaches a positive stop (the racking pins on the circuit breaker are engaged with the racking cams of the cassette on both sides). The circuit breaker is now in the DISCONNECTED position (Fig. 3.6).

Figure 3.6. Circuit Breaker in DISCONNECTED Position

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. 3.4.

Figure 3.4. Racking Drive in the DISCONNECTED Position

9. Push back both the extended rails of the cassette to the

stowed position.

10. Close the circuit breaker cubicle door.

11. If the circuit breaker is CLOSED and the springs are

charged, press the OPEN button on the circuit breaker fascia and ensure the circuit breaker contacts are open (Fig. 3.7).

Figure 3.7. Setting the Circuit Breaker to OFF

6. Pull out the cassette rails fully.

Page 11

12. With a screwdriver, turn the racking handle shutter

drive A clockwise (Fig. 3.8).

Figure 3.8. Racking Handle Shutter Drive Location

13. Insert the racking handle in the handle insertion hole

on the cassette front panel.

14. Rotate clockwise to rack the circuit breaker into the

cassette.

Figure 3.9. Turning the Racking Handle

15. 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 is installed, it may operate when approaching the TEST position.

16. Remove and store the racking handle.

The circuit breaker is now ready for normal operation.

17.

3. Continue rotating the racking handle counter clockwise

until the position indicator first shows TEST, then DISCONNECTED.

4. Open the breaker cubicle door.

5. Pull out the cassette rails (Fig. 3.10).

Figure 3.10. Cassette Rails Pulled Out for Circuit Breaker Unloading

6. 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. 3.1.

Figure 3.11. Circuit breaker Pulled Out of the Cassette for Unloading

Circuit Breaker Removal from the Cassette

DANGER

ELECTROCUTION

 Ensure the circuit breaker has been tripped, indicating

OPEN, 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 11 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.

8. Attach the lifting bar to remove the circuit breaker.

Page 12

EntelliGuard® E Circuit Breaker DEH-41526

TRIP UNIT

General Information

All EntelliGuard E power circuit breakers are equipped with

n electronic trip unit that provides an analog

override

Figure 3.12. Trip Unit

Trip Unit Installation

1. Remove breaker front cover (fascia).

2. The trip unit is mounted on the PMU base. Press the

Figure 3.13. Trip Unit Being Mounted on the PMU Base.

instantaneous over current trip function.

lever and align the trip unit as shown in Fig. 3.13.

4. Release the lever once the trip unit is inserted. This

action will lock the trip unit to the PMU base as shown in Fig. 3.15.

Figure 3.15. Trip Unit Alignment

5. Install the front cover as shown in Fig. 3.16.

Figure 3.16. Front Cover Installation

3. Insert the trip unit knob on the PMU base shown in Fig.

3.14.

Figure 3.14. Trip Unit Release Lever

Page 13

WIRING

Tables 3.1 through 3.2 show the wiring schematic for Block A

Table 3.1. Wiring Schematic for Block-A

Motor Motor Spr NO Spr NO NI SET NI SET NI RESET NI RESET CC IMM CC COM ST ST

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

Max. Voltage (V) 120 V 120 V 240 V 240 V 120 V 120 V 120 V 120 V 120 V 120 V 120 V 120 V

NC1 NC1 NO3 NO3 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) 120 V 120 V 120 V 120 V 120 V 120 V 120 V 120 V 120 V 120 V 120 V 120 V 

24 V+ 24 V- BA/NI NO

Max. Current (I) <500 mA <500 mA

Max. Voltage (V) 30 V 30 V 480 mV 480 mV 16 V 16 V

A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13

A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24 A25 A26

A27 A28 A29 A30 A31 A32 A33 A34 A35 A36 A37 A38 A39

BA/NI

<500 mA <500 mA 1A 1A

COM

DISC I/O

COM

SEC

CONN

FLUX

SHIFTER+

FLUX

SHIFTER -

Table 3.2. Wiring Schematic Nomenclature Definitions

Pin Nomenclature Description Pin Nomenclature Description

A1 Motor A2 Motor A27 A3 SPR NO/RTC NO A4 SPR NO/RTC NO A29 A5 NI SET A6 NI SET A31 24 V+ A7 NI RESET A8 NI RESET A33

power input to motor operator

spring charge status contact

power input to network interlock set

network interlock reset

A9 CC IMM closing coil A34 BA/NI NO A10 CC COM closing coil neutral wire-common A35 BA/NI COM

A11 A36 DISC I/O COM messenger I/O common A12 ST

A13 ST A38 Flux shifter + flux shifter + A14 A15 A16 A17

power input to shunt trip

A18 NC1 A19 NC1

normally closed contact 1

A26  

A28

A30

A32 24 V-

auxiliary power supply to trip unit

bell alarm/network interlock status switch

A37 SEC CONN secondary disconnect connected

A39 flux shifter - flux shifter -

A20 NO3

normally open contact 3 A21 NO3 A22 A23 A24 NO1 A25 NO1

normally open contact 1

Page 14

EntelliGuard® E Circuit Breaker DEH-41526

Figure 3.17. Circuit Breaker Wiring Diagram

Page 15

SECONDARY DISCONNECT BLOCKS

 Located for wiring to the accessories :

- Top-mounted for all envelopes.

 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. 3.18).

Figure 3.18. Secondary Disconnect

 Block-A contains a set of 39 self-aligning secondary

circuit isolating contacts. Each contact is clearly labeled with the connection point.

 Block-B used for internal wiring in the cassette.

Page 16

EntelliGuard® E Circuit Breaker DEH-41526

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.

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.

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

CLOSE 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 deenergized and energized a second time.

Table 4.1. Stored Energy Mechanism Sequences of Operation

OPEN/CLOSED

Indicator

OPEN open discharged discharged closing springs may be charged OPEN open charged fully charged contacts may be closed, then opened

CLOSE closed discharged discharged contacts may be opened or closing springs may be charged CLOSE closed charged fully charged open-closed-open sequence may be carried out and the closing

OPEN open charged fully charged closing spring may be discharged without closing contacts

CLOSE closed charging partially charged complete charging

OPEN open charging partially charged complete charging

CLOSING SPRING DISCHARGE PROCEDURE

The main spring may be discharged (also known as “crashing the mechanism”) without closing the breaker by using a special tool operated through a small window on the front cover.

Main Breaker

Contacts

Charging Spring

Indicator

Condition of Charging

Springs

Next Permissible Operating Function

springs can be charged after the close operation opened

The mechanism closing springs are automatically discharged (crashed) when the circuit breaker is moved from the DISCONNECT position to the WITHDRAWN fully disconnected position and vice versa.

The closing springs must be discharged prior to removal of the arc-chute cover.

Page 17

CLOSING PROCEDURE

 Pull the charging handle out and down to charge the

closing springs (requires approximately 10 pumps of the handle to fully charge).

 If a motorized spring charging unit is installed, the

springs will be automatically charged as soon as the motor is energized.

 Pressing the CLOSE pushbutton or energizing the

closing coil (if installed) will close the circuit breaker.

CONDITIONS WHEN CLOSING CANNOT OCCUR

 The OPEN button is in a depressed position.  The trip unit is not installed.

Table 4.2. Cassette Operating Positions

Circuit Breaker

Position in the

Cassette

CONNECTED engaged engaged

TEST disengaged engaged

DISCONNECTED disengaged disengaged

WITHDRAWN disengaged disengaged

Primary

Disconnects

Secondary

Disconnects

 circuit breaker may be operated both mechanically or electrically  ready for service  circuit breaker may be operated both mechanically or electrically  circuit breaker and control circuit operations may be tested and

verified

 circuit breaker may be operated only mechanically  circuit breaker may not be removed from the circuit breaker

compartment

 circuit breaker may be operated only mechanically  circuit breaker may be removed from the circuit breaker

compartment

 If racking handle is inserted, remove it.  The breaker is positioned anywhere between

CONNECTED, TEST and DISCONNECTED positions.

 Trip unit reset button is protruding from the front

cover. Press the reset button.

 A network interlockis installed and the SET coil is

activated.

 A key interlock is operating on the breaker.

CIRCUIT BREAKER OPENING PROCEDURE

 Press the OPEN pushbutton or energize the shunt

trip coil (if installed).

 Tripping under fault conditions will be automatic

from the EntelliGuard Messenger.

Circuit Breaker Functionality Circuit Breaker

Door Position

closed

open

Page 18

EntelliGuard® E Circuit Breaker DEH-41526

SECTION 5 – LOCKS AND INTERLOCKS

DANGER

ELECTROCUTION

Ensure the circuit breaker has been tripped, indicating OFF, and the main springs are fully discharged before installing locks and interlocks.

Failure to comply with these instructions will result in death or serious injury.

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

PERSONAL INJURY

 Avoid risk of injury from moving parts while

handling the circuit breaker.

Failure to comply with these instructions could result in death or serious injury.

DRAWOUT CASSETTE FRONT PANEL LOCKING

Security Locking

This function locks the entry of the racking handle in the crank insertion hole of the cassette front panel when the padlock is installed when circuit breaker in the DISCONNECTED/ CONNECTED position. Up to three padlocks (shaft diameter of 3 mm to 9.5 mm) may be installed for additional security (Fig. 5.2).

Figure 5.2. Circuit Breaker Security Padlocking Location

CAUTION

PRODUCT DAMAGE

 Ensure the circuit breaker and its accessories are

always used within their designated ratings.

Failure to comply with these instructions may result

in product damage.

GENERAL INFORMATION

NOTICE

Ensure all padlocks are scissor compatible.

A variety of locks and interlock accessories are available. The operation of most of these accessories is described in this section.

A Security Locking Bar

1. Ensure the position indicator shows the

DISCONNECTED/CONNECTED position.

2. Remove the racking handle from the operating

position.

3. Pull the locking bar until the locking eye is exposed

and hold while inserting the padlock shaft (Fig. 5.3).

Figure 5.3. Padlock Insertion and Lock-Out on the Security Locking Bar

CIRCUIT BREAKER FRONT PANEL LOCKING

Padlock or Scissor Lock for Breaker Trip Free Condition

1. While pressing the OFF pushbutton, pull out the

padlock lever.

2. Ensure padlock shaft diameter is 3 mm to 9.5 mm.

3. Insert padlock hasp (Fig. 5.1).

Figure 5.1. Padlock for Breaker Trip Free Condition

Isolation Shutters Locking (If Installed)

This function locks the operation of the safety shutters when the padlock is installed on the security locking

Page 19

bar A (Fig 5.6) only when the cassette is in the DISCONNECTED position. Only one padlock (shaft diameter of 3 mm to 9.5 mm) may be installed.

1. Ensure the position indicator shows the

DISCONNECTED position.

2. Remove the racking handle from the operating

position.

3. Pull the locking bar until the locking eye is

exposed and hold while inserting the padlock hasp (Fig. 5.4).

Figure 5.4. Padlock Insertion

Figure 5.5. Safety Shutter in Closed Position

Figure 5.6. Shutter Padlocking

Table 5.1. Drawout Circuit Breaker Locking

Function Number and Type of Padlocks/Locking

Devices

Racking mechanism screw access blocking padlock in DISCONNECTED/TEST/CONNECTED positions. Racking mechanism screw access blocking and breaker trip free position key lock in DISCONNECTED/TEST/CONNECTED positions (Kirk lock). Padlocking provisions on the drawout rails prevent unauthorized installation of a breaker that has been removed from the cassette for equipment or load maintenance.

three locks may be mounted

maximum of two locks

maximum of three padlocks on each drawout rail

Padlock Shaft Diameter

3 mm to 9.5 mm

Page 20

EntelliGuard® E Circuit Breaker DEH-41526

SECTION 6 – ACCESSORIES DESCRIPTION

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.

GENERAL INFORMATION

Optional accessories are interchangeable across all EntelliGuard E power circuit breakers, regardless of nominal rating or envelope/frame size. Each accessory incorporates easy-fit design features for quick installation, either at the factory or in the field (Fig. 6.1).

NOTE: Replacement accessories have an “R” at the end of the catalog number as shown.

Figure 6.1. Accessory Mounting

Table 6.1. Motor Operators

Envelope

1 AC – 350 VA 120 Vac

2 and 3 AC – 560 VA 120 Vac

Power

Consumption

Nominal

Control Voltage

ANSI

Range

102 V to

132 V

102 V to

132V

Cat No.

GM01120AR

GM02120AR

 Spring charge time = 3 sec max.  Recommended fuse amps: contact factory.  Duty cycle = 2/min.  Envelope 1 motors: running VA ~ 350 VA; inrush = 2 to 3

times.

 Envelope 2 motors: running VA ~ 560 VA; inrush = 2 to 3

times.

Circuit Breaker Closing Coil

Easy-to-fit, clip-on closing coil with simple, plug-in connections is available. The closing coil offers electrical remote release of the spring charged closing mechanism. A standard anti-pump safety feature ensures that the remote signal must be released before further close commands are allowed.

Table 6.2. Closing Coil Characteristics

Type Power

Consumption

Closing

Coil

 Duty cycle = 2/min.  Closing coil inrush = 350 VA.

AC: 350 W

(inrush), 20 W

(sealed)

Nominal Control

Voltage

110/130/120 Vac GCCN120R

Catalog Number

Shunt Trip (ST)

Energizing the shunt trip, via local or remote input, will

INDIVIDUAL ACCESSORIES

Motorized Spring Charging Unit

The unique motor/gearbox unit is specially designed to operate with the full range of EntelliGuard E. It is easily fitted with three heavy-duty bolts. After a breaker close operation, the unit automatically recharges the spring and makes it ready for immediate open and re-close should the need arise. High speed recharging ensures that the springs are fully charged within approximately three seconds following a release. All electrically operated (EO) ANSI/UL breakers are

instantaneously activate the circuit breaker mechanism, ensuring a rapid open operation. The standard auxiliary switch ensures automatic isolation whenever the circuit breaker is open. The shunt trip release is a straightforward, field installable accessory.

Table 6.3. Extended Range Shunt Trip Rating

Nominal Control Voltage Catalog Number

110 Vdc/120 Vac GSTG120R

 Pickup range = 55%-110%.  Duty cycle = 2/min.  Inrush = 480 A (ac).  Holding = 60 VA (ac).

equipped with “Spring Charged” contacts (GSCC1R) for status indication (Table 6.1).

Remote Operation Coil Combination

Each breaker accepts a maximum of three coils shown in Table 6.4. All coils are mounted from the front and snap onto the mechanism after the fascia is removed.

Page 21

Table 6.4. Remote Operation Coil Combination

Combination Coil Position on Fascia (from left)

1 2 3

1 NI SET NI RESET CC ST

Auxiliary Switches

Auxiliary switches indicate breaker main contact position. They change their state in the same time sequence as the breaker main contacts. See Table 6.6 for rating.

Table 6.5. Auxiliary Switches

Contact Configuration Cat. No.

Power rated (3NO+3NC) GAUX3R

Table 6.6. Auxiliary Switch Ratings and Secondary Disconnect Points

Contact Configuration Power Rated Cat. No.

Power rated(3NO+3NC) A14 - A25 GAUX3R

Circuit Breaker - Key Interlock Facility

This option provides factory-installed interlocking devices for installation between separate circuit breakers (baseplates and mechanism). This safeguard ensures that a circuit breaker cannot be closed unless the dedicated key has been inserted and secured within the lock. Circuit breakers accept ready-to-fit interlocking device kits such as Kirk for installation between related, separate circuit breakers (Table 6.7).

NOTE: Locks and keys are not supplied by GE. Please order separately from your local supplier.

Table 6.7. Key Interlocks and Door Interlocks

Description Catalog Number

Baseplate and mechanism for Kirk Key locks (breaker mounted)

Mechanism for Kirk key cassette interlock (cassette mounted)

Door interlock (left side) GLHD

Door interlock (right side) GRHD

GBKRKR

GCKRKR

Table 6.8. Carriage Position Switches

Switch Configuration Catalog Number

1 NO/NC switch per position GCPS4R

Bell Alarm with Lockout

The bell alarm provides remote indication that the circuit breaker has opened because of an electrical fault. The Lockout feature is integral to the trip unit. When a Bell Alarm is supplied with the breaker, the trip unit dial is set and locked to the manual position. In order to re-close the breaker, the Lockout button must be pushed in/reset on the trip unit 1-Form C contact (Table 6.9).

Table 6.9. Bell Alarm Switches

Switch Configuration Cat. No.

One single pole, double throw switch (1-Form C contact)

Charging Spring Status Indicator

Factory-installed on the motor, this auxiliary switch indicates that the circuit breaker is charged and is standard with the spring-charging motor.

Secondary Disconnects (Factory-installed/Field Installable)

Inputs and outputs to the circuit breaker are wired through secondary disconnects located on the top of the breaker. The plug-style secondary disconnects engage mating disconnects in the breaker cubicle when the breaker is in the TEST or CONNECT position. Up to 39 points are available so that all breaker accessories can be wired to dedicated disconnect points. See Table 6.10 for block location and Table 6.11 for secondary disconnect parts.

Table 6.10. Block Location

Carriage Position Switch (TOC)

Available as an option for mounting within the base of the cassette/substructure, the carriage position switch provides

Table 6.11. Secondary Disconnect Parts

Breaker Type Mounting Number of

changeover contacts for electrical indication of the circuit breaker status: CONNECTED & TEST. This option is in addition to the mechanical indicators, which are fitted as standard.

 Set contains both the male and female sides of the secondary

When installed, the carriage switch is IP2X protected and includes wiring to a terminal block located on the left side of the cassette (Table 6.8).

 Drawout kits include the metal bracket for connections to the cassette.

Top Disconnect

Block B Block A

circuit breaker/cradle viewed from the front

Drawout

disconnect.

Top 39 pole set GSDWSR

GBAT1R

Cat. No.

Poles

Page 22

EntelliGuard® E Circuit Breaker DEH-41526

Cassette/Substructure

The drawout mechanism allows the breaker to be racked in four distinct positions:

 CONNECTED  TEST  DISCONNECTED  WITHDRAWN

Position Indicators

Position indicators provide a positive mechanical indication of CONNECTED, TEST and DISCONNECTED positions of the breaker.

Rejection Device

A factory-installed rejection feature prevents mis-matching breakers and cassettes/substructures. This prevents:

 Inserting a breaker with a lower interruption rating into

a higher rated cassette/substructure.

 Inserting a lower rated breaker into a higher rated

cassette/substructure.

Page 23

SECTION 7 – ACCESSORIES INSTALLATION

DANGER

ELECTROCUTION

Ensure the circuit breaker has been tripped, indicating OFF, and the main springs are fully discharged before installing accessories.

Failure to comply with these instructions will result in death or serious injury.

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

PERSONAL INJURY

 Avoid risk of injury from moving parts while

handling the breaker.

Failure to comply with these instructions could result in death or serious injury.

2. Pull the charging handle while easing the cover

upwards .

MOTOR OPERATOR - SPRING CHARGING UNIT INSTALLATION

1. Slide the coupling bushing onto the camshaft.

2. Place the gearbox bearing onto the protruding motor

drive shaft, pushing it home until flush with the mechanism sideplate. If it does not move easily to the flush position, pull the charging handle gently down to ease movement.

3. Mount the device using three M5 bolts through the

holes provided in the gearbox endplate, torque to 7 N m.

4. Manually charge the closing springs and carefully locate

the plastic switch actuator over the protruding drive shaft (Fig. 7.2), ensuring the switch operating arm is correctly positioned (switch arm should be in the ‘cut out’ portion of the motor switch actuator.

Figure 7.2. Motor Switch Actuator

CAUTION

PRODUCT DAMAGE

 Ensure circuit breaker and its accessories are

always used within their designated ratings.

Failure to comply with these instructions may result

in product damage.

CIRCUIT BREAKER FRONT COVER REMOVAL

Required for most accessory installation.

1. Remove the six mounting screws (Fig. 7.1).

Figure 7.1. Front Cover

5. Use a M8 nylock nut to mount the motor switch

actuator onto the shaft end, torque to 14.5 N m.

6. Connect the motor connector on to the motor harness.

7. Connect the remaining ground wire from the filter to

the grounding point on the rear of the motor body.

Reverse the above procedure to remove the motorized spring charging unit

Page 24

EntelliGuard® E Circuit Breaker DEH-41526

NETWORK INTERLOCK, SHUNT TRIP AND CLOSING COIL DEVICE INSTALLATION

NOTICE

The mounting positions of the three devices can be arranged in the locations as specified in Figure 7.3.

Figure 7.3. Device Location

Coil Position on Fascia

1&2 3 4

Network Interlock closing coil shunt

Shunt Trip & Closing Coil Installation (Fig. 7.4)

1. Tilt the device forward and engage the front hooks into

the top support plate.

2. Tilt the device backwards until the rear hooks engage

in the slots

3. Press down into position.

Figure 7.4. Closing Coil Installation

NETWORK INTERLOCK INSTALLATION

When the network interlock is used with the EntelliGuard E, it will use the 1 and 2 positions of the coils as shown in Fig.

7.3. The mounting procedure is same as the shunt trip and closing coil.

BELL ALARM SWITCH INSTALLATION

1. Remove the trip unit from the PMU base.

2. Assemble the bell alarm assembly using four screws.

3. Reassemble the trip unit back onto the PMU base

4. Install the connector from the bell alarm in the specified

location of the SD.

SHUTTER PROP OPEN FEATURE

This feature allows the main primary contacts to be inspected.

DANGER

ELECTROCUTION

Ensure the primary contacts on the swictchgear are deengergized prior to propping open the shutter.

Failure to comply with these instructions will result in death or serious injury.

1. Remove the circuit breaker from its cassette.

2. Rotate the shutter operating lever to open the shutter

(Fig. 7.5).

3. Release the shutter operating lever to close the

shutters.

Figure 7.5. Shutter Operating Lever Location

Connect the wire plugs (Fig. 7.5) according to the wiring schematic in Section 3.

Figure 7.5. Wiring

A Shutter Operating Lever

CARRIAGE POSITION SWITCH INSTALLATION

One configuration is available:

Closing Coil Removal

1. Disconnect the device and pull it forward until the rear

hooks disengage.

2. Lift to release the front hooks.

Mounted on the left-hand side of the cassette for all frames. No fasteners are required. To insert, feed the wires through

the large opening on the side of the cassette. Seat the carriage position switch in the front side of the hole first.

Page 25

Then use this as a pivot and ensure that all four tabs lock in place (Fig. 7.6).

Figure 7.6. Carriage Position Switch Location

CLUSTERS (PRIMARY DISCONNECT FINGERS)

Clusters are the main isolating contacts which are installed on the rear terminals on the withdrawable circuit breaker. Cluster contacts may be easily and quickly removed and replaced using cluster pliers (Figs. 7.7 and 7.8).

Figure 7.7. Clusters Figure 7.8. Cluster Pliers

Clusters are mounted vertically through cluster pads for different frame sizes. The slot is provided on the terminals for locking the clusters. For higher current and short circuit ratings, the clusters are assembled in parallel.

MECHANICAL BELL ALARM CONTACT INSTALLATION

1. Remove the front cover.

2. Remove the trip unit.

3. Install the mechanical trip alarm as shown in Fig. 7.9.

Figure 7.9. Mechanical Trip Alarm

5. Replace the front cover.

6. Connect the wires via the plug connectors to the

respective locations of the secondary disconnect contacts A33, A34 and A35.

7. Replace the front cover.

REJECTION FEATURE

This factory-installed, pin and gate device prevents the insertion of a circuit breaker into a cassette if the nominal rating of the breaker is incompatible with that of the cassette and its ancillary equipment.

Figure 7.11. Rejection Feature

A Pin block assembly

Fig. 7.12 shows the corresponding restrainer assembly mounted on the cassette. There are two of these assemblies, one on each side of the cassette and the breaker.

Figure 7.12 Corresponding Restrainer

4. Connect the wires via the plug connectors to the

respective locations of the secondary isolating contacts A33, A34 and A35 (Fig. 7.10).

Figure 7.10. Plug Connector Location

Page 26

EntelliGuard® E Circuit Breaker DEH-41526

SECTION 8 – MAINTENANCE, TESTING AND TROUBLESHOOTING

WARNING

IMPROPER INSTALLATION, OPERATION, SERVICE 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.

MAINTENANCE

DANGER

ELECTROCUTION

Ensure the circuit breaker has been tripped, indicating OFF, and the main springs are fully discharged when performing circuit breaker maintenance.

Failure to comply with these instructions will result in death or serious injury.

The back edge of each contact tip should line up with the outer edge of the marked area on the wear indicator. As the contacts erode, the gap between the back of the contact tip and the rear housing becomes smaller. If the back edge of the contact tip crosses into the marked area, the tip is heavily eroded, and it needs to be replaced (Fig. 8.1).

Figure 8.1. Contact Gap

1. Remove the arc chamber assemblies as shown in Fig.

8.2.

Figure 8.2. Arc Chamber Assembly Removal

WARNING

PERSONAL INJURY

 Avoid risk of injury from moving parts while handling

the circuit breaker.

Failure to comply with these instructions could result in death or serious injury.

Inspection Schedule

 Normal working conditions:

- Annually, or

- Following interruption of a short circuit, or

- After repeated high value overload faults.

 Dusty/polluted environments:

- Every six months, or

- Following interruption of a short circuit, or

- After repeated high value overload faults.

Cleaning Procedure

1. Inspect external surfaces for dust/dirt.

2. Clean with compressed air and dry cloth.

Contact Wear Indicator Inspection (GCNTW)

The contact wear indicator indicates the condition of the contact tip when the circuit breaker is viewed in the closed condition from the top side. It indicates the relative position of the back edge of each contact tip with the area marked on the wear indicator.

2. Insert the wear indicator in each pole as shown in Fig 8.3.

Figure 8.3. Wear Indicator Insertion

3. View the back end of finger with the arcing contact edge

with respect to the marked area on the wear indicator. The marked area indicates the allowable erosion for main tips (Fig. 8.4).

Figure 8.4. Wear Indicator in Place

Page 27

1. Inspect the arc splitter plates and sides of the moldings

for signs of wear or damage. Replace as necessary.

2. With the circuit breaker in the ON position, check the

size of the gaps between the fixed and moving arcing contacts.

 If the gap is greater than 2.5 mm:

- No evidence of contact damage: loosen the

fixed contact screw and adjust the gap to

2.5 mm. Retighten the screw (12 N m torque).

- Evidence of excessive contact wear or damage:

Replace the fixed arcing contacts and set the gap set to 2.5 mm.

 Even if gaps are within operating tolerance (1 mm

to 2.5 mm), always check contact screws for tightness to 12 N m torque.

3. Assemble the arc chamber. Torque to 2 N m.

Circuit Breaker Main Mechanism Inspection

 Check the circuit breaker CLOSE and OPEN action both

manually and by remote means, if appropriate.

 Check all indicators for correct function.  Check number of operations to the circuit breaker’s

specification.

Cassette Inspection

 Ensure the base of the cassette is clear of debris.  Prop open the shutters and inspect the cassette’s

installed contacts for excessive wear or damage.

 Check the carriage switch operation (if installed) while

racking the circuit breaker into and out of the CONNECTED position.

Isolating Contacts Inspection

1. Remove the circuit breaker from the cassette housing

and place it on a suitable working surface.

2. Inspect the rear cluster contacts for signs of

overheating and wear.

3. Remove the cluster contacts using the special cluster

pliers.

4. Clean the isolating contacts and terminals with a soft,

clean cloth to remove any old grease or dirt.

5. Apply a thin film of red lube grease D50HD38.

Lubrication

CAUTION

PRODUCT DAMAGE

Do not lubricate Auxiliary Switch, Signaling Switches, Coils, Motor and Secondary Disconnects.

Failure to comply with these instructions may result in product damage.

Ensure all metal-to-metal friction surfaces are kept lubricated:

1. Remove old lubrication and dirt.

2. Apply Molecote 4700.

3. Wipe off excess lubrication.

Page 28

EntelliGuard® E Circuit Breaker DEH-41526



TROUBLESHOOTING

Table 8.1 reviews common problems, their possible cause(s) and solution(s). If problems persist please contact our Post Sales Service Department at 1-888-GERESOLVE (1-888-437-3765).

Table 8.1. Troubleshooting

Problem Possible Cause Solution

Breaker won’t close.

Breaker closes then opens instantaneously.

Circuit breaker won’t rack into cassette.

Cannot insert racking handle.

Circuit breaker will not go into the DISCONNECTED position.

 Breaker is between CONNECTED, TEST

and DISCONNECTED positions.

 Bell alarm has not been reset.  Interlocks installed.  Racking handle inserted.

 Breaker information module connector

is not inserted.

 Ensure breaker is pushed fully from the

maintenance position to DISCONNECTED.

 Racking drive not in DISCONNECTED

position.

 Shutter padlocks are installed.  Key locks are installed.  Circuit breaker is incorrect for given

cassette.

Rack circuit breaker to CONNECTED, TEST or

DISCONNECTED remove racking handle and close circuit breaker.

 Push BELL ALARM button on trip unit and close

circuit breaker.

 Remove interlocks.  Remove handle and close circuit breaker.  Check operational diagram and trip the relevant

circuit breaker.

Insert breaker information module connector to

breaker information module.

Push breaker into DISCONNECTED position.

 Ensure racking drive is in DISCONNECTED

position.

Remove padlocks and/or operate key locks.

Ensure circuit breaker and cassette go together.

ENTELLIGUARD

E PUBLICATIONS

To download publications like those shown below, visit www.geelectrical.com.

Publications Pub #

Entellisys 5.0 Application Guide DET-838 Entellisys 5.0 User Guide DEH-501 Bell Alarm w/ Lockout DEH-41409 Shunt Trip DEH-41411 Remote Close Accessory Close Coil DEH-41412 Motor Operator DEH-41413 Aux Switch DEH-41415 Network Interlock DEH-41461* Remote Racking Operator DEH-41467 Clusters (Primary Disconnect Fingers) DEH-41460 Key Interlock (cassette) DEH-41500 Contact Wear Indicator DEH-41382

* Secondary disconnect status switch location is different for EntelliGuard E breaker. Status switch position is A33,A34 & A35.

Page 29

NOTES:

Page 30

GE 41 Woodford Avenue Plainville, CT 06062

www.geindustrial.com

DEH-41526 (11/12)

GE Industrial Solutions EntelliGuard E Circuit Breaker User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual