Ground Fault Current on AFD Output
Ground Fault Current on AFD Output
(OP)
So I have a medium-voltage AFD fed from an ungrounded delta supply. Is there a zero sequence current path from drive to motor that would result in significant GF current for a GF in the motor, even with an ungrounded supply?





RE: Ground Fault Current on AFD Output
RE: Ground Fault Current on AFD Output
RE: Ground Fault Current on AFD Output
Probably depends on the specific inverter design. In that regard the inverter is probably a very weak source.
RE: Ground Fault Current on AFD Output
RE: Ground Fault Current on AFD Output
Best regards,
Mark Empson
http://www.lmphotonics.com