I have a problem with a service switch in a large building we have a reverse current relay connected to a shunt trip breaker that seems to have gone bad we pulled the fuse on the relay and the service stays on line
My question is what is the purpose of this reverse current relay and how. Necessary is it. As we have many more service switches without this feature also is the replacement just a switch out or does it require special calibration?
Thanks for any comments
My question is what is the purpose of this reverse current relay and how. Necessary is it. As we have many more service switches without this feature also is the replacement just a switch out or does it require special calibration?
Thanks for any comments