GE Industrial Solutions MicroVersaTrip Plus and MicroVersaTrip PM for Allis Chalmers, Siemens_Allis, and Siemens LA-600[F] and LA-1600[F] (Blue) User Manual
Page 2
2
TABLE OF CONTENTS
SECTION 1. GENERAL INFORMATION
.........................................................................................................................................3
SECTION 2. BEFORE INSTALLATION
............................................................................................................................................3
SECTION 3. BREAKER PREPARATION
........................................................................................................................................4
SECTION 4. INSTALLING THE CONVERSION KIT
....................................................................................................................6
Installing the Flux Shifter................................................................................................................................................. 7
Installing the Trip Unit Mounting Plate............................................................................................................................ 9
Installing the Current Sensors ...................................................................................................................................... 12
LA-800 Current Sensors ............................................................................................................................... 12
LA-1600 Current Sensors ............................................................................................................................. 12
SECTION 5. INSTALLING THE TRIP UNIT
..................................................................................................................................13
SECTION 6. FOUR-WIRE GROUND FAULT OPTION
............................................................................................................13
SECTION 7. TESTING AND TROUBLE-SHOOTING
Testing .......................................................................................................................................................................... 15
Trouble-Shooting.......................................................................................................................................................... 15
LIST OF FIGURES
1. Primary disconnects removed from the lower studs, showing the original current sensors. ................................................... 4
2. Escutcheon mounting screws. .................................................................................................................................................. 4
3. Original flux shifter installed on the left side of the breaker frame (LA-1600 shown). .............................................................. 5
4. Components supplied with the conversion kit........................................................................................................................... 6
5. Flux shifter mounting screw and spacers installed (LA-1600 shown). ..................................................................................... 7
6. Flux shifter reset arm attached to the movable contact arm on the breaker mechanism, viewed from the top
of the breaker (LA-600 shown}. ................................................................................................................................................ 7
7. Flux shifter mounted on breaker (LA-600 shown). ................................................................................................................... 7
8. Flux shifter installed on a fused breaker, main contacts open (LA-600 shown)....................................................................... 8
9. Top view of the flux shifter installed on an unfused breaker (LA-1600 shown)........................................................................ 8
10. Adjusting the flux shifter (LA-600 shown). ................................................................................................................................ 8
11. 36-pin trip unit connector........................................................................................................................................................... 9
12. 36-pin connector adapter bracket. ............................................................................................................................................ 9
13. Adapter bracket locking tabs..................................................................................................................................................... 9
14. Installing the push nuts onto the guide pins............................................................................................................................ 10
15. Locking tabs on mounting plate. ............................................................................................................................................. 10
16. Trip unit mounting plate attached to the support bracket. ...................................................................................................... 11
17. Mounting plate and support bracket mounted on the breaker (LA-600 shown. .................................................................... 11
18. Installing the current sensors (LA-600). .................................................................................................................................. 12
19. Installing the current sensors (LA-1600). ................................................................................................................................ 12
20. Trip unit installed on the breaker (LA-1600 shown)................................................................................................................ 13
21. Cabling diagram for MicroVersaTrip Plus™ and MicroVersaTrip PM™ trip units with ground fault on four-wire
loads ........................................................................................................................................................................................ 17