[Amps] Using an oil capacitor

[Paul Kraemer]

Vic BE CAREFUL. BE VERY CAREFUL!!!
>From the size and capacitance you describe it is probably an "energy storage 
capacitor" which is not suitable for power supply filter at even it's 
published ratings. You will be picking pieces of capacitor out of places you 
really don't want them.
Paul K0UYA

----- Original Message ----- 
From: "Vic K2VCO" <vic at rakefet.com>
To: "Amps reflector" <amps at contesting.com>
Sent: Sunday, June 19, 2011 12:59 AM
Subject: [Amps] Using an oil capacitor


>I have an oil capacitor rated at 53 uf 3.5kv. I would like to use it in a 
>power supply
> with a transformer delivering 2.4 kVAC. The peak voltage is thus close to 
> 3400V.
>
> I've never used an oil capacitor before. My line voltage is pretty 
> constant at 240V, but
> if it were to rise to 250V, the voltage rating of the capacitor would be 
> exceeded. What
> kind of safety factor do capacitors like this have?
>
> The capacitor is 4-1/2" x 4" x 10" and is marked CSI 4W308T. The CSI 
> website
> <http://www.csicapacitors.com/csite/cms/149.htm> doesn't list this 
> particular one, but
> other 3.5kV capacitors have similar part numbers. There's no detailed 
> spec. There is this
> statement:
>
> "The WM series of capacitors is designed for general purpose pulse 
> applications in power
> supplies for lasers, flash tubes and other capacitor discharge circuits 
> where moderate to
> long life is required."
>
> I'm not sure if this is appropriate for power supply filter application. 
> Anybody familiar
> with these?
> -- 
> Vic, K2VCO
> Fresno CA
> http://www.qsl.net/k2vco/
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