I'm looking for ways to electronically switch power going to a device between MAINS (120VAC) and Hipot (HV) ~4kVAC and vice-versa.

My initial thought was using power FETs, but I doubt there is any rated for such high voltages. The idea is to switch to high voltage when doing Hipot tests, then back to normal "MAINS" during regular testing

 

What is your actual hipot voltage.. I doubt its 4kV.. I thought it was typically 2 times operating voltage + 1000V for AC. (so 2x120=240+1000=1240V)
That might help others narrow down your choices/solutions..
I know TE has many relays (kilovac series) that is capable of switching up to 70kV
http://relays.te.com/kilovac/

 

Sweeeet! Thanks for the link.

Actual hipot voltage is currently 4kVAC, but might go up to 5kVAC. Not sure how the number was derived, but that's the requirement I have. The high voltage would only be applied for about a minute. So the relay/switch will mainly be passing MAINS power.

 

What is your actual hipot voltage.. I doubt its 4kV.. I thought it was typically 2 times operating voltage + 1000V for AC. (so 2x120=240+1000=1240V)
That might help others narrow down your choices/solutions..
I know TE has many relays (kilovac series) that is capable of switching up to 70kV
http://relays.te.com/kilovac/

I've attached a pic of what I'm really trying to achieve. The desire is to have S1, S2, S3, S4, and S5 be required to be in the same position at all times, this position will be opposite to that of S6 and S7. The relays would be controlled by 12V or less