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Re: capacitor
From: Geoffrey Schecht[SMTP:geoffs-at-onr-dot-com]
Sent: Wednesday, September 03, 1997 11:42 PM
To: Tesla List
Subject: Re: capacitor
I've got a few Pyranols laying around. I don't think that they're dangerous
unless they're leaking or unless you manage to blow their seals from
overheating. Here in the US, anything with polychlorinated biphenol (PCB's)
has to be disposed of as a hazardous material, at least legally. So, if I
get a leaker, I just bag it in a trashcan liner and take it to work as an
additional nuisance for the hazmat disposal crew. Fire Departments can
handle hazmat disposal in most locales.
Pyranols always seem to show up at hamfests and surplus stores. They also
show up in junkyards (like in the big photoflash capacitors that certain
photocopiers use. I found one a while back with a large hole in its side,
the dielelctric had bled into the bottom of the copier's chassis. That's
one I didn't touch. I guess that we're drinking it by now in our tapwater
:(.
If I lived near Rusty Duncan, I would have gladly taken those caps off of
his hands. Those big guys are hard to find these days!
Geoff
>
>
> From: LINEMAN23K-at-aol-dot-com[SMTP:LINEMAN23K-at-aol-dot-com]
> Sent: Wednesday, September 03, 1997 11:11 AM
> To: tesla-at-pupman-dot-com
> Subject: Re: capacitor
>
> In a message dated 97-09-03 03:39:49 EDT, you write:
>
> << Subj: Re: capacitor
> Date: 97-09-03 03:39:49 EDT
> From: tesla-at-pupman-dot-com (Tesla List)
> Resent-from: tesla-at-pupman-dot-com
> To: tesla-at-poodle.pupman-dot-com ('Tesla List')
>
>
> From: Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
> Sent: Wednesday, August 27, 1997 11:45 PM
> To: Tesla List
> Subject: Re: capacitor
>
>
> Malcolm
>
> Thanks for the info. This was my first post on the capacitors (I thought
it
> had gotten lost). Since then I reposted and Ed Wingate suggested I
returned
> the caps since they indeed contained Pyranol. This is exactly what I
did.
>
> Thanks again
> Rusty Duncan
>
>
>
> I may be able to help in a significant way here.....
>
> > From: LINEMAN23K-at-aol-dot-com[SMTP:LINEMAN23K-at-aol-dot-com]
> > Sent: Wednesday, August 27, 1997 4:01 PM
> > To: tesla-at-pupman-dot-com
> > Subject: capacitor
> >
> > I was given three capacitors today by the operator of a local ham
radio
> shop.
> > They are large and heavy, about 40-50 lbs. The dimentions are
> 5"x13.5"x13".
> > The nameplate had this info:
> >
> > General Electric
> > MU-F = 3
> > CAT. = 14F15
> > V = 12500
> > CY = DC
> >
> > I assume they are 3uF-at-12.5KVDC? Does anyone have a spec sheet on this
> cap?
> > If so, are they a power factor correction type cap used in
distribution
> with
> > a internal bleed resistor? Are they oil filled and if so is it PBC
(they
> > look old)?
> >
> > Thanks in advance for any help or suggestions.
> >
> > Rusty Duncan
>
> I have a fairly full list of PCB containing components issued by the
> NZ Ministry of Health. It is more aimed at common fittings but does
> list trade names for some of the nasties contained in many caps and
> transformers. A couple of examples of safe ones:
>
> VISCONOL, NITROGOL
>
> Both of these were found in transmitter smoothing caps which have
> similar ratings to those you describe.
>
> Some nasties by name:
>
> DUCONOL (Dubilier), PYRANOL (General Electric), THERMINOL (Hunts)
>
> The list is not exhaustive. Look for any of the above words on your
> caps. In particular, look for anything ending in "OL". I need full
> details in order to have a reasonable chance of identifying these.
>
> Malcolm
> >>
>
>
>