Re: An Idea! for cap

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

Original poster: robert & june heidlebaugh <rheidlebaugh-at-desertgate-dot-com> 

May I suggest DONT do it. I use silicon oil and if you have never used it
DONT. Silicon oil will crawl up the sides of a contained and all over the
outsides to make a mess. Even a screwed lid will make a poor seal to hold
silicon oil. I use silicon oil as a hot chemical resistant heating liquid
and it is messy. I use different viscosities from light mono-silane to thin
greese and they all are messy and expensive.
     Robert   H
-- 


 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > Date: Tue, 02 Dec 2003 17:15:05 -0700
 > To: tesla-at-pupman-dot-com
 > Subject: An Idea! for cap
 > Resent-From: tesla-at-pupman-dot-com
 > Resent-Date: Tue, 2 Dec 2003 17:30:01 -0700
 >
 > Original poster: "pjj" <tha3rdman-at-zoominternet-dot-net>
 >
 > I was thinking on an eariler post, that a paper cap's dielectric is usualy
 > oil. Being a man of many hobbies in r/c cars shocks & diffs is silicon base
 > "oil" off variing weights from 10 wt. to 250,000 wt. any idea where i can
 > find the dielectic strenth of this stuff? and other stuff.
 >
 >
 > ----- Original Message -----
 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > To: <tesla-at-pupman-dot-com>
 > Sent: Tuesday, December 02, 2003 10:00 AM
 > Subject: Re: Pungent Odor from HV Capacitors
 >
 >
 >> Original poster: "Crow Leader" <tesla-at-lists.symmetric-dot-net>
 >>
 >> ----- Original Message -----
 >> From: "Tesla list" <tesla-at-pupman-dot-com>
 >> To: <tesla-at-pupman-dot-com>
 >> Sent: Tuesday, December 02, 2003 12:28 AM
 >> Subject: Pungent Odor from HV Capacitors
 >>
 >>
 >>> Original poster: dhmccauley-at-spacecatlighting-dot-com
 >>>
 >>> I have a few high voltage capacitors that seem to be giving off a
 > pungent,
 >>> unpleasant type solvent smell.  Among these are some smaller Maxwell
 > metal
 >>> can type capacitors as well
 >>> as some grey GE type HV capacitors.   Also, both capacitors are
 >> practically
 >>> new and never used, so they aren't like some old leaking capacitors.
 >>>
 >>> Anyone have any ideas of what this odor is???
 >>
 >> Wow, could be lots of stuff. GE "Dielectrol (pick a number)" non-PCB stuff
 >> smells musty and bad. The only caps I've ripped open that smell like a
 >> solvent would be some early 80's stuff from FCI that was impregnated with
 > I
 >> believe to be carbon tetrachloride. The impregnant completely evaporated.
 >> The MSDS for a General Atomics (formerly Maxwell) I have says the
 > impregnant
 >> for my cap is isopropyl bi-phenyl, which should be a clear yellow liquid
 >> with a "straw" like odor. It's not likely your caps are mineral oil
 > filled.
 >> Even with additives, they'd be pretty smell free. I've been to several HV
 >> cap factories. All they smell like is paper. I've smashed open silicone
 >> impregnated caps, again, no smell, but it's obvious they are filled with
 >> silicone from how fast the oily mess flows over the entire surface of the
 >> cap. The stuff literally flows out of any cracks or leaks and makes an
 > oily
 >> mess anywhere it can flow (up down, no difference).
 >>
 >> Give General Atomics a call with the partn number. Say you have a leak and
 >> want the MSDS for the clean up.
 >>
 >> KEN
 >>
 >>
 >>
 >
 >