GE Industrial Solutions ProTrip Conversion Kits AK-1-50 - Manual (Page 3)

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TABLE OF CONTENTS
SECTION 1. GENERAL INFORMATION ........................................................................................................... 4
SECTION 2. BEFORE INSTALLATION ............................................................................................................. 4
SECTION 3. FRONT AND BACK FRAME DISASSEMBLY ........................................................................ 5
SECTION 4. BACK FRAME BREAKER CONVERSION
Removing the Electromechanical Trip Devices...................................................................................... 6
Installing the Phase Sensors .................................................................................................................. 7
SECTION 5. FRONT FRAME BREAKER CONVERSION
Installing the Trip Paddle ........................................................................................................................ 8
Installing the Flux Shifter Assembly ....................................................................................................... 9
SECTION 6. BREAKER REASSEMBLY
Frame Assembly................................................................................................................................... 10
Wiring Harness Installation................................................................................................................... 10
Adjusting the Flux Shifter...................................................................................................................... 11
Installing the Trip Unit........................................................................................................................... 12
Configuring the Trip Unit....................................................................................................................... 12
SECTION 7. FOUR-WIRE GROUND FAULT OPTION ................................................................................ 13
SECTION 8. TESTING AND TROUBLESHOOTING
Testing .................................................................................................................................................. 14
Trouble-Shooting .................................................................................................................................. 14
Nuisance Tripping on Ground Fault-Equipped Breakers ........................................................ 14
LIST OF FIGURES
1. Opening springs and old trip devices on an AK-1-50 circuit breaker (view from bottom of
breaker). ........................................................................................................................................................... 5
2. Crossbar mechanism pin and retaining clip..................................................................................................... 5
3. EC trip devices before removal. ....................................................................................................................... 6
4. Removal of EC trip devises.............................................................................................................................. 6
5. Parts provided for CT installation per pole....................................................................................................... 7
6. CT post mounted in the breaker back frame. .................................................................................................. 7
7. CT installation completed................................................................................................................................. 7
8. Front frame assembly, showing the old trip paddles. ...................................................................................... 8
9. Installing the new trip paddle............................................................................................................................ 8
10. Flux shifter assembly and mounting bracket ................................................................................................... 9
11. Flux shifter bracket installed on the front frame (view from underneath with breaker
reassembled). .................................................................................................................................................. 9
12. Flux shifter assembly attached to the mounting bracket.................................................................................. 9
13. Installing the insulating barrier ....................................................................................................................... 10
14. Wiring harness connection to the CTs. .......................................................................................................... 10
15. Adjusting the flux shifter ................................................................................................................................. 11
16. Attaching the trip unit to the mounting plate................................................................................................... 12
17. Trip unit mounted onto the breaker................................................................................................................ 12
18. Neutral sensor outline for AK-1-50................................................................................................................. 13
19. Cabling diagram for ProTrip™ trip units with ground fault on four-wire loads. .............................................. 16