On 04/14/2015 04:14 PM, Alan Ibbetson wrote:
I have a pair of jumbo oil filled capacitors. They are each 6 x 6 x 12
inches and weigh about 10 pounds. I wish to use them at 3KV off load and
with a 2A ripple current under full load.
The only markings I can read are 42uF and "test voltage 7500 volts" (in
French). What is the consensus on the likely safe working voltage? Is
it likely to be well defined for this type of capacitor, in the sense
that all have a standard de-rating factor applied?
I would Hi pot it to 7600 Volts and if OK I would use them to 7500
Volts, but their nature and robustness is still unknown they could have
been built to do any of several jobs not related to PS filtering,
--
Ron KA4INM - Youvan's corollary:
Every action results in unwanted side effects.
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