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GE AKR Series User Manual
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Power
Circuif
Breokers,
GEI-86134
7
Fi,g.
8.
AKRT-5)
contact
structure
1.
Movable
contact
arm
2.
StationarY
main
contact
3.
Stationary
intermediate
contact
4.
StationarY
arcing
contact
5.
Driving
link
6.
Insulating
link
I
7.
CouPling
Pin
DRIVING
LINK
Fig.
9.
AKRT-|7
Mouable
contact
piuot
bloch
8
10
Table of Contents
Table of Contents
2
Introduction
3
Rear Uiew of AKR-30 Breaker
3
Constructional Diff Erences
3
Breaker Ratings
4
Non-Interchangeability Hardware Arrangements
5
Slide Rail Rejection Pin Locations
5
Drawout Breaker Interchangeability
5
Contact Maintenance
6
Manual Handle Adjustment
6
Safety Precautions
6
AKR/AKRU-30 Contact Structure
7
Contact Adjustment
7
AKR-30 Wipe Adjustment
8
Contact Adjustment
8
AKRT- 50 Movable Contact Pivot Block
9
AKRT-50 Contact Structure
9
AKRU-30/50 Fused Breakers
10
Contact Replacement
10
Fuse Sizes and Mounting
10
GE CLF Fuses for AKRU Breakers
10
Mounting of Class J Fuses on AKRU-30 Breakers
11
Typical Mounting for Class L Fuse
11
AKRU-|0 Breaker with Special 2500A Fuse
12
Open Fuse Lockout Device
12
Speciol 2500A Fuse for AKRU-50
12
Mounting for Special 2500A Fuse on AKRU-50 Breaker
13
Plan View of AKRU-50 Breaker Showing 2500A Fuse Tang Positions
13
SST Block Diagram
14
SST Programmer Unit
14
Breaker Maintenance
6
Type SST Overcurrent Trip Device T4
14
Components
14
AKR-54-30 Breaker with SST Trip Device
15
SST Trip Characteristics
16
SST Phase Sensor with Tap Board
16
SST Neutral Sensors
16
Troubleshooting
17
Neutral Sensor Secondary Disconnect Blocks
17
Using the SST Test Set
18
False Tripping
19
Replacement of Current Sensors
19
Flux Shift Trip Device
20
Flux Shift Trip Device Components
21
Trip Rod Adjustment
21
Cabling Diagram
22
Type ECS Overcurrent Trip Device
24
ECS Programmer Unit
24
ECS Block Diagram
24
Ecs Sst
24
ECS Trip Characteristics
25
ECS Current Sensors on AKRU-44-30 Breaker
25
Cabling Diagram for ECS Trip Device
26
ECS Current Sensor
26
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GE AKR Series Specifications
General
Brand
GE
Model
AKR Series
Category
Circuit breakers
Language
English
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