8.2.9 Brake IGBT Module (Optional)
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1 Attaching nut (step 4) 6 Brake IGBT cable (step 3)
2 Left attached bus bar (step 4) 7 Brake IGBT module
3 Jumper bus bar between brakes (step 5) 8 IGBT-Ind bus bar assembly (steps 9 and 10)
4 Attaching nut (step 5) 9 Snubber capacitor (step 7)
5 IGBT-Ind bus bar assembly (step 6) 10 IGBT capacitor bus bar (step 8)
NOTE: The brake IGBT is an option and may not be present on all units.
1. Remove both upper and lower capacitor bank assemblies in accordance with instructions.
2. Remove high frequency board in accordance with instructions.
3. Unplug brake IGBT cable from connector on each of the two brake IGBT modules.
4. Remove bus bar attached to left side of panel and to left most brake IGBT by removing two nuts at each end of bus bar.
5. Remove jumper bus bar between two brake IGBTs by removing retaining nut on each end of jumper bus bar.
6. Remove the two screws (T30) connecting the IGBT-Ind bus bar assembly to each brake IGBT module.
7. Remove nine snubber capacitors by removing two screws (T30) from each capacitor.
8. Remove the three IGBT bus bars freed by removing screws in step 7.
9. Remove four retaining nuts (13mm) connecting IGBT-Ind base bar assembly to two DC bus bars from inductor.
10. Remove IGBT-Ind bus bar assembly.
11. Remove brake IGBT by removing four mounting screws attaching each brake IGBT to back panel.
High Power Service Manual for Unit Sizes 6x
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