GE Industrial Solutions AF-600 FP High Power (460V_575V 150HP and above) - Manual (Page 107)

7.2.7 Capacitor Bank(s)
Some 42/44 size units have 2 capacitor bank assemblies mounted one above the other. Separate disassembly instructions are given for upper
and lower capacitor banks. For units with one capacitor bank assembly only, disassemble in accordance with instructions for Single capacitor
bank 41/43 units.
Upper capacitor bank 42/44 units
1. Remove the control assembly support bracket in accordance with instructions.
2. Capacitor bank connection to DC bus bars can be seen recessed in the gap between upper and lower cap banks. Remove the 2 nuts (10 mm) furthest
from the DC bus bars. A minimum 100 mm (4 in) extension is required.
3. Remove the 4 retaining nuts (10 mm) from the cap bank cover plate and remove the cover plate.
4. Note that the weight of the cap bank is approximately 9 kg (20 lbs). Remove the cap bank by pulling it free from the mounting studs.
Reinstall in reverse order of this procedure. Tighten the mounting screws to 4 Nm (35 in-lbs).
130BX73.10
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Illustration 7.1: 42/44 Upper and Lower Capacitor Bank Assemblies
380–480V: Blue DC Link Capacitors. 525–690V: Black DC Link Capacitors
1 Upper cap bank assy retaining nuts (step 2) 4 Lower cover plate retaining nut (step 3)
2 Upper cover plate 5 Gate drive card
3 Upper cover plate retaining nut (step 3) 6 Lower cap bank assy retaining nuts (step 1)
Lower capacitor bank 42/44 units
1. Capacitor bank connection to DC bus bars can be seen recessed in the gap between upper and lower cap banks. Remove the 2 cap bank retaining nuts
(10 mm) furthest to the right from the DC bus bars. A minimum 100 mm (4 in) extension is required.
2. Note that the IGBT gate drive card can remain attached to the cap bank cover plate. Disconnect MK100, MK102, MK103, MK104, and MK106 from the
gate drive card. Also remove the MK105, for units with a brake, and MK101 for units with an RFI filter.
AF-650 GP and AF-600 FP High Power Service Manual
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