[Amps] Help on Aerovox capacitor

[kenw2dtc]

I agree with Dennis on his assessment of the cap with this added thought. 
Since the internals are wound like a roll of paper towels in oil, it is 
possible that the outside layer is closer to the physical case and thus have 
a lower breakdown voltage to the case than the inside layer terminal?  Thus 
if the cap is insulated from the chassis, no polarity should be noted, but 
if the cap is mounted on a chassis with other wiring, the red dot should be 
the positive terminal?
Just asking.....

73,
Ken W2DTC

----- Original Message ----- 
From: "Mike Clarson" <mclarson at rcc.com>
To: "'Dennis Berry'" <dennisberry at worldnet.att.net>; <amps at contesting.com>
Sent: Thursday, December 16, 2004 11:05 AM
Subject: RE: [Amps] Help on Aerovox capacitor


> Dennis: My data shows this cap as an "immersion-proof" unit. Intended for
> continuous heavy duty use. Used HYVOL (the oil?) that allows compact size
> with high capacity. Looks like an oil filled unit, and polarity should not
> matter. Neither side should be connected to case. I show dimensions of 
> 4-5/8
> x 3-3/4 x 3-3/16 (HxWxD) and it cost about $25 new.--Mike, WV2ZOW
>
> -----Original Message-----
> From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com]On
> Behalf Of Dennis Berry
> Sent: Thursday, December 16, 2004 12:06 AM
> To: amps at contesting.com
> Subject: [Amps] Help on Aerovox capacitor
>
>
> I have an Aerovox No 9, A-10941-1, 8 MFD 2000vdc capacitor.  I have 
> searched
> on google, and the aerovox.com website for information on this cap.  My
> guess is it is an older one since nothing is showing up with these part
> numbers.
>
> Does anyone have info on this cap (other than mfd and voltage, that is the
> obvious part).  In particular, how did Aerovox mark their positive or
> negative terminal?  The cap has a round dot in the can at one end, but 
> there
> is no paint on it to indicate if it was a positive or negative.  Did 
> Aerovox
> uses a standard marking for their part?  I am assuming this would be a
> polarized capacitor with that MFD and voltage rating.
>
> Anyone with an older catalog that can help me out with additional info?
>
> Thanks,
>
>    Dennis
> _
>
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