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Generators & Electric Motors General Discussion

Replacement Capacitors?


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  #1  
Old 01-20-2009, 11:38:20 PM
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Mikey4026 Mikey4026 is offline
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Default Replacement Capacitors?

Hi guys!
Is there some formula or rule of thumb to figure out what is needed for replacements when the capacitors are fried and unreadable?
Seems like lately I have been induated for requests for Chinese generator capacitors that I can't identify. I have not had much luck finding OEM replacements. When I can still read the numbers, I just go to a motor shop and buy them. If I had the formulas, I would just pass it on and not be involved with the Chinese generators and blown up caps.
Thanks in advance!
Mikey
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Old 01-21-2009, 08:05:42 PM
Chuck Woycke Chuck Woycke is offline
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Default Re: Replacement Capacitors?

buy junk get junk,the lowest price is sometimes not in your best interest
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Old 01-21-2009, 09:07:47 PM
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Default Re: Replacement Capacitors?

I agree with you completely.
Not our product, just trying to help someone who works on junk, I avoid them!
Wish I could think of a way to not work on generac?
Mikey
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Old 01-21-2009, 09:40:48 PM
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Talking Re: Replacement Capacitors?

Mikey, Your likely to need MORE information about the acutal job the capacitor is being required to do. Is it for nosie filtering, or for resonance, or just what? There was a whole generation of Asian Mfg'd Caps that were produced with a pirated electrolyte formula that wasn't copied correctly, and all those caps went bad in place. A major problem for the Asian Electronics Bizz, that is still showing up in electronics in this country. The price we pay for importing out OEM Goods from Asia....
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Old 01-21-2009, 11:05:06 PM
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Default Re: Replacement Capacitors?

Hi Bruce
I am talking about capacitor regulation. Sorry, I did not get that written into the post.
I have never worked on the generators, just get sent a fried cap from a customer in Bellingham. I believe they are 120\240 of 7KW or less.
Mikey
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Old 01-22-2009, 03:20:40 AM
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Talking Re: Replacement Capacitors?

OK, they will be the same type Caps that are used in Electric Motor Starters to shift the Phase enough to get the armatures to spin up. Non-Polarized, usually 5 to 10 uf and twice the Voltage Rating of the windings. Cheap way to regulate simple Genends....
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Old 01-22-2009, 12:37:59 PM
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Default Re: Replacement Capacitors?

Thanks Bruce
I will pass it on.
Mikey
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Old 01-22-2009, 02:28:36 PM
Fred M. Fred M. is offline
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Default Re: Replacement Capacitors?

Mikey-

My brushless 2500 Watt Chinese Pro Force Power Mate uses a 24 Microfarad 5% 300 Volt capacitor for regulation.

It is similar to Packard, Inc., stock number PRC25, 25MF 370V "Round Run Capacitor".

Fred
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