I wish to thank everybody for their responses. They have been very helpful. This is truly a wonderful web site. From what I have heard from all of you and been able to find out on my own on Google, it appears what we may be experiencing is sparking vice flashover. If our motors are...
Our crane drives are equipped with GE, 75 HP, 480 volt DC, TENV motors. The cranes are in a covered outdoor environment. The motors are meggered annually. When ever a low megger reading is found it is almost always due to carbon dust build up in the housing. A through cleaning of the...
