Re: Non ballasting a pig?

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

Original poster: "Gregg Adams by way of Terry Fritz <twftesla-at-qwest-dot-net>" <network-at-nexband-dot-com>

Thanks Greg H., Godfrey L., and Bart B. and anyone else that responds after
this post.   I know with these responses, I WILL definitely use some
ballasting.  Hey while we are on the subject, I have plenty of MOT's in
which the HV sides are burnt/shorting out.  Could these be of use?  If not,
is there another alternative other than MOT's or a stick welder?

Thanks once again,
Gregg Adams



----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, October 14, 2002 9:32 PM
Subject: Re: Non ballasting a pig?


> Original poster: "Barton B. Anderson by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <tesla123-at-pacbell-dot-net>
>
> Hi Gregg,
>
> You "must" ballast the pig regardless. Connecting the pig without a
ballast
> will appear
> as a short circuit. These transformers will pull many times their rated
> amps in short
> circuit conditions. Take the recipricol of your percent impedance value
and
> mulitply by
> your rated amps. This will give you some idea of what the pig would try to
> draw. Your
> breaker would pop immediately.
>
> My pig is 1.9% imp 10kva/14.4kv.   So 1/1.9 = 52.6 x 41.67A = 2192A =
gotta
> use a
> ballast to limit current.
>
> Take care,
> Bart
>
> Tesla list wrote:
>
> > Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <network-at-neXband-dot-com>
> >
> > Hello list,
> >    I've been following some posts where ppl are talking about what it
> > takes to ballast a pig and was wondering this...
> >
> > I recently installed a new breaker box(200amp) in my house in which I
> > reserved a 100amp 240v breaker for my shop.  Is it possible that this
> > would be enough to power my 7.5kva pig without ballasts?  If I still
need
> > to, would one 3000w heater element be enough even though it's lossy?
I'm
> > not fortunate enough to have a stick welder, just a wire welder and the
> > water heater element is handy;)
> >
> > Thanks,
> > Gregg Adams
>
>
>