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Tech Square Technical and speculative discussion of amps, cables and other topics. |
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Tech Square Technical and speculative discussion of amps, cables and other topics. |
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In Reply to: RE: Reforming capacitors posted by Tweekeng on May 23, 2009 at 00:26:32:
standard procedure is to apply rated voltage spread slowly over time. Normal recommendation is 5 minutes of ramp up per month in storage. An example would be if you have a capacitor rated at 500 volts and its five years old, you would raise the voltage about 8 volts every five minutes till you reach 500 volts. That's a long time. And you should check for leakage periodically also.
Much easier if you have one of those old Sprague cap testers which allows you to dial in the applied voltage. You can check for leakage as you raise voltage. The military normally throws away caps older than five years, as it takes too much time and monitoring to reform the caps.
Stu
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- RE: Reforming capacitors - unclestu52 13:24:49 05/25/09 (0)
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