What can cause the secondary control power transformer fuse to blow on an enclosed drive?

Issue:
The secondary fuse of the control transformer is blowing.

Product Line:
All enclosed drives

Environment:
All models and serial numbers

Cause:
Caused by short circuit to ground.  Possible loose wire or defective or damaged contactor coil.

Resolution:
Trace short circuit with ohm meter.  Replace coil if necessary.

Publicerad för:Schneider Electric Sverige