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Old 26th October 2013, 04:27 AM   #1
athos56 is offline athos56  United States
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Default Random Motor run Capacitor Question

I have to test a Compressor that takes a 250vac 12uf Motor Run Cap. I have 12uf worth of those green 1000vdc Russian PIO caps could those stand in for a Motor Run?


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Old 26th October 2013, 10:19 AM   #2
DF96 is offline DF96  England
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Possibly, but they might not last too long. Caps intended for continuous AC use may be used for DC with no problem, but not necessarily the other way round. What will happen if one of the caps develops an internal short?
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Old 26th October 2013, 11:30 AM   #3
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I've just had a look on E-Bay, you can buy the motor run caps for about $5.
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Old 26th October 2013, 01:56 PM   #4
M Gregg is offline M Gregg  United Kingdom
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I would only use the correct part,

If you get it wrong the motor will burn out.
Also the caps might overheat.

M. Gregg
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Old 28th October 2013, 05:11 AM   #5
athos56 is offline athos56  United States
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Thanks for the replies. I decided to just wait and get the correct part. Don't want to burn out the motor.
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