Re: Pig question

To: tesla-at-pupman-dot-com
Subject: Re: Pig question
From: "Kevin M. Conkey" <teslacoil-at-mindspring-dot-com>
Date: Sun, 16 Feb 1997 11:12:10 -0500
Subscriber: teslacoil-at-mindspring-dot-com Sun Feb 16 13:52:24 1997

Tesla List wrote:
>
> Subscriber: Esondrmn-at-aol-dot-com Sat Feb 15 15:44:36 1997
> Date: Sat, 15 Feb 1997 03:07:32 -0500 (EST)
> From: Esondrmn-at-aol-dot-com
> To: tesla-at-pupman-dot-com
> Subject: Re: Pig question
>
> In a message dated 97-02-14 01:58:30 EST, you write:
>
> <<
>  Hello fellow pigger's,
>
>  I am working on the controller for my Pig. It is a 19.9KV 15 KW
unit.
>
>  I read once that someone used 3- 2000W oven elements(8.33 ohms) in
>  parallel for a resistance of 2.78 ohms.
>
>  I have several air cooled power resistors ranging from 5kw to 30kw.
>  I want as much flexability as possible.
>
>  Could a few of you guys out there that use big pigs please tell me
what
>  resistances that you have needed to use at various times across your
>  current control (welder)? And what power levels they would need to
>  dissapate.
>
>  Thankyou in advance,
>   >>
>
> Kevin,
>
> That was probably me.  I was using three 2,000 watt elements in
parallel and
> in parallel with the welder.  This worked good until I rewired my
primary now
> I need to find another solution - more or less elements or maybe in
series
> with the welder instead.  When using three elements, running at about
30 amps
> primary currrent, the elements get too hot to touch but not red hot.
Richard
> Hull, I believe, uses resistors in series with the ballast, about 1/2
ohm.
>  With this resistance at 30 amps, it would dissipate 450 watts so you
would
> need about a 1,000 watt rating.
>
> Ed Sonderman


Ed,
Are you thinking of going to series because of the heat?
With me I have enclosed10kw air cooled units that would not be a problem
for me.
Or there performance problems?

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