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Dec 12 - problems working on
All the bolts removed. A couple of cables removed from 'DC Bus Reactor' to buss bars. With all bolts removed from the frame I still cannot remove the drive from the cabinet. In fact, I can't move the drive at all. I'm starting to think that the VFD will need to come into the garage with the trailer, and that I will still have difficulty disassembling the unit.
Perhaps if all else fails I can use the large VFD as a rack, with all of the required spacing already set for 600V, the insulators (once they are cleaned up) and the bracing. Add new IGBTs, a newer set of (perhaps smaller) capacitors and a new control board to drive the IGBTs. The mechanical stuff is done, which is normally my big problem …
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