GE Industrial Solutions AF-600 FP High Power (460V_575V 150HP and above) User Manual
Page 139
8.2.9 SCR and Diode Modules
1.
Remove the lower DC capacitor bank in accordance with procedure.
2.
Remove the input terminal plate in accordance with procedure.
3.
Remove the wire retaining nut (10 mm) from each of the 3 SCR input bus bars (BB41).
4.
Note colour coding for each of the 3 wires attached to the retaining studs. Ensure that the correct wire is attached to the applicable stud upon reassembly.
Remove the wiring from the studs.
5.
Remove the wire retaining nut (8 mm) from the SCR output bus bars (BB42). One from the (+) DC bus bar and one from the (–) DC bus bar.
6.
Note colour coding for each wire attached to the retaining studs. Ensure that the correct wire is attached to the applicable stud upon reassembly.
Remove the wiring from the studs.
7.
Remove the 4 retaining nuts (13 mm) on the side of the bus bars, 2 on each bus bar.
130BX105.10
1
2
3
4
5
Illustration 8.1: SCR and Diode Modules (1 of 3)
1
Retaining nuts (Step 7)
4
Diode module
2
Wire retaining nut on bus bar BB41 (Step 3)
5
Wire retaining nuts for output bus bars BB42 (Steps 5 & 6)
3
SCR module
AF-650 GP and AF-600 FP High Power Service Manual
138
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