MV(20kV) Vacuum circuit breaker and surge arrester
MV(20kV) Vacuum circuit breaker and surge arrester
(OP)
Hi, i've got a tough dilemma regarding 20kV-Vacuum circuit breakers.
Do you possibly know about any requirements for installing surge arresters and where I have to mount them (i mean the surge arresters) on the bus-bar system or on every incoming bushing?
Do you possibly know about any requirements for installing surge arresters and where I have to mount them (i mean the surge arresters) on the bus-bar system or on every incoming bushing?






RE: MV(20kV) Vacuum circuit breaker and surge arrester
RE: MV(20kV) Vacuum circuit breaker and surge arrester
Utility companies do not want customer's surge arrestors on the line side of the incoming breakers,as they come in the way of performing a hi-pot tests on their feeders. (Surge arrestors could operate on hi-pot tests, Not good).
So I would place surge arrestors on the load side of the incoming bus or not provide any if the feeder breakers have them. For feeder breakers, I have seen mostly on the load side.
RE: MV(20kV) Vacuum circuit breaker and surge arrester
Within enclosed switchgear there may be limited space for surge arrestors, and you should seek the factory recommended location so as not to encroach on required phase spacing.
RE: MV(20kV) Vacuum circuit breaker and surge arrester