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Re: Ion inception voltage in oil

Original poster: "Mike" <mike.marcum@xxxxxxxxxxxx>

I guess it depends on the oil (type, how dry it is, etc). I'd bet that it's at least 4kv/mm based on the dielectric strength of diala-a (200kv/inch irrc). Never actualy tested that tho since you'd probably have to pour it in a 0 humidity clean room to maintain that.

----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Thursday, August 10, 2006 1:33 AM
Subject: Ion inception voltage in oil

Original poster: Finn Hammer <f-h@xxxx>


I am wondering how high up the ion inception voltage is moved, when the parts in question are put under oil. Anyone?

Cheers, Finn Hammer


Of course, we don't know the "function", only the limits. At 500V (630 V ion inception voltage- dual series) the plates have no ionization. They moved down to 500V in the ratings since the voltage gradient is higher at the plate edges. But at 500V/cap the life should be "forever". At 2000V they show a decay step at 75 hours. I never tried any other voltages on the tester.