Re: Dielectrics

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

check out http://home.earthlink-dot-net/~jimlux/hv/insulliq.htm which has
breakdown strengths for some common insulating liquids.  They're all pretty
much the same... say, 100kV/cm, give or take.  Most hydrocarbons (i.e.
diesel fuel, heating oil, kerosine) will be in that range.  In practice, the
breakdown voltage is mostly determined by contaminants... water,
particulates, etc., especially in tiny micron sized ranges.    Get the
liquid (pretty much any liquid) really, really pure, and the breakdown
voltages get up in the 1000-2000 kV/cm range...


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, April 27, 2002 11:53 AM
Subject: Re: Dielectrics


> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<Goinbonkers-at-aol-dot-com>
>
> Hi All.
>
>    What is the breakdown voltage of kerosene and motor oil?  I want to try
> to make a cap that uses only motor oil or kerosene as the dielectric.  I
> know I want additive free oil, but will I need to dry it before use?
> Can someone who's done this give me some pointers?
>
> Thanks,
> Winston
>
>
>
> Hi All,
>    A thought just occurred to me related to this.   Has anyone considered
using
> diesel as a dielectric?   It is about the equivalent of 10W motor oil and
would
> not have the detergents.
> Mike
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