I have a Sepex model 1274-7401 motor controller that was installed in an IT car built in Canada. 72V 400A serial # 6009-p0029861.
Plugged it in (120VAC) to charge one day & it blew the house fuse. Also blew the 10Amp fuse on the car. Seems to be a direct short through the unit. Ive replaced the unit with one salvaged from another vehical.
How much to diagnose the problem? If I take it apart, can you help me do a simple diagnostic?
Obviously I'd like to have the unit repaired - or buy a replacement before the other unit goes out on me.
Aloha
Bob Bourke
808 256 2057
Hawaii is 6 hours behind - pls dont call before noon your time.