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hi pot testing

hi pot testing

hi pot testing

(OP)
I'm used to mechanical systems where there are specs aplenty about testing and design requirements.
Hydraulic systems are designed and tested at 3 or 4 X working pressure.
Chains, ropes and cables have a working load rating that is some small fraction (1/3 or so) of the tensile strength.

One of our internal test specs is to hi pot to 2X the expected max condition, plus 1 KV.  One engineer in the electronics group is advocating hi-potting some dump resistors just to the expected dump voltage.  

Is there a spec from NEMA or other organization that would provide a starting point?

RE: hi pot testing

Most specifications are as you said. Around twice rated voltage plus 1 kV. We also see 2.5 times + 1 kV.

Gunnar Englund
www.gke.org

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