GE Industrial Solutions AF-600 FP High Power (460V_575V 150HP and above) - Manual (Page 147)

11. Remove the 6 retaining screws (T30) connecting each IGBT module output to the IGBT output bus bars.
12. Remove the retaining nut (17 mm) connecting the IGBT output bus bar to IGBT over-fan bus bar. Note that there is one for each of three phases.
13. Remove the retaining nut (17 mm) or T50 Torx screw, depending on the unit type, connecting to IGBT over-fan bus bar to current sensor bus bar.
14. Remove the 3 retaining nuts (17 mm) at top and one retaining nut (8 mm) at bottom attaching IGBT output bus bar to standoffs. Remove the IGBT output
bus bar.
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Illustration 8.1: IGBT Modules (3 of 4)
1 Retaining screw (Step 11) 5 Retaining nut (Step 12)
2 Retaining nut (Step 14) 6 Over-fan bus bar
3 Output bus bar 7 Retaining nut (Step 13)
4 Retaining nut (Step 14)
AF-650 GP and AF-600 FP High Power Service Manual
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