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Is corona discharge bad in a glass capacitor? Answered

About 2 months ago I built a 60Kv 0.03uF glass capacitor with twenty (5mm or 0.2inch) glass plates. There is a small amount of corona discharge around the edges of the glass. I am concerned whether this small amount of corona discharge could be damaging to the glass is this so?

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steveastrouk
steveastrouk

Best Answer 9 years ago

A small amount, no, a lot creates heat which may crack the glass.
Steve

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The MadScientist
The MadScientist

Answer 9 years ago

So only the possibility of heat, not anything with the corona eating away at the glass as with some plastics?

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steveastrouk
steveastrouk

Answer 9 years ago

Yes, pretty well. Consider the amount of energy being lost in the discharge. And minimise it ! Make sure everything is clean and dry, make sure there are no sharp edges to concentrate fields.

Steve