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High voltage AC withstand testing breakers and SG. What is phase to ground capacitance?

Thread starter VLFit
Start date Jan 26, 2018

Status: Not open for further replies.

Jan 26, 2018

VLFit

Electrical

Age old question: sizing the AC hipot. What is the capacitance from ph. to grd. and ph. to ph. of typical breakers from 5kV - 150 kVac? I don't find this information easily from the CB vendors. I know most of them but not all and not the newer rated apparatus and the HV models. Does anyone have a chart of the typical capacitances to calculate the current required to perform the withstand test. Right now I need it for a 66 kV SF6 breaker. To test one breaker is easy but when testing multiple units, it's helpful to know.

Thank you.