Re: poly pig

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

Original poster: "Paul Marshall" <klugmann-at-hotmail-dot-com> 

I do not think that it is possible to heat up a Pig in normal tesla 
operations. At least not 10kVA and up.



Paul S. Marshall





>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Re: poly pig
>Date: Tue, 06 Jul 2004 19:32:32 -0600
>
>Original poster: Mike Poulton <mpoulton-at-mtptech-dot-com>
>
>Tesla list Wrote:
> > Original poster: "steve" <steve_vance-at-cablelynx-dot-com>
>
> > Has anyone ever tried to encase a pig transformer in a polymer?
> >snip<
> > Anyone know of any reason this wouldn't work?
> > What kind of polymer Should be used?
>
>It would work from an electrical standpoint, but the power handling
>would be greatly reduced.  Oil circulates by convection through the
>transformer and transfers heat to the metal case.  A solid plastic
>will be a rather good thermal insulator, and therefore will be worse
>thermally than nothing but air.  You could still do it if you are
>willing to massively derate power.  I would recommend any of the
>polyurethane casting componds made for making pastic parts in silicone
>molds.
>
>
>-------------------------------------------------
>Mike Poulton
>MTP Technologies
>mpoulton-at-mtptech-dot-com
>KC0LLX (70cm AM ATV, 33cm/12cm FM ATV, Omaha, NE)
>