Table Of Contents - GE AKR Series Maintenance Manual Supplement

Table of Contents

Table Of Contents2
Introduction3
Constructional Diff Erences3
Rear Uiew Of Akr-30 Breaker3
Breaker Ratings4
Drawout Breaker Interchangeability5
Non-Interchangeability Hardware Arrangements5
Slide Rail Rejection Pin Locations5
Breaker Maintenance6
Safety Precautions6
Manual Handle Adjustment6
Contact Maintenance6
Contact Adjustment7
Akr/Akru-30 Contact Structure7
Akr-30 Wipe Adjustment8
Akrt-50 Contact Structure9
Akrt- 50 Movable Contact Pivot Block9
Contact Replacement10
Akru-30/50 Fused Breakers10
Fuse Sizes And Mounting10
Ge Clf Fuses For Akru Breakers10
Typical Mounting For Class L Fuse11
Mounting Of Class J Fuses On Akru-30 Breakers11
Speciol 2500A Fuse For Akru-5012
Open Fuse Lockout Device12
Akru-|0 Breaker With Special 2500A Fuse12
Mounting For Special 2500A Fuse On Akru-50 Breaker13
Plan View Of Akru-50 Breaker Showing 2500A Fuse Tang Positions13
Sst Programmer Unit14
Sst Block Diagram14
Type Sst Overcurrent Trip Device T414
Components14
Akr-54-30 Breaker With Sst Trip Device15
Sst Trip Characteristics16
Sst Phase Sensor With Tap Board16
Sst Neutral Sensors16
Troubleshooting17
Neutral Sensor Secondary Disconnect Blocks17
Using The Sst Test Set18
False Tripping19
Replacement Of Current Sensors19
Flux Shift Trip Device20
Flux Shift Trip Device Components21
Trip Rod Adjustment21
Cabling Diagram22
Type Ecs Overcurrent Trip Device24
Ecs Programmer Unit24
Ecs Block Diagram24
Ecs Sst24
Ecs Trip Characteristics25
Ecs Current Sensors On Akru-44-30 Breaker25
Cabling Diagram For Ecs Trip Device26
Ecs Current Sensor26