Re: [TCML] 100kVA trannies as salvage?

["Roger Smith" <rwsmith@xxxxxxxxxxxxxx>]

I have my 10kva pig hooked up to run a Jacobs latter right now.  It is 
ballasted with an air core inductor that lets it draw about 140 amps.  I 
also use a 1200 uf capacitor bank with it for power factor correction which 
reduces the current at the mains to about 65 amps.

The inductor I use is a winding from a large transformer with the core 
removed.   After a few minutes of running it starts to get very warm.

Roger
----- Original Message ----- 
From: "david baehr" <dfb25@xxxxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Thursday, October 30, 2008 9:03 PM
Subject: RE: [TCML] 100kVA trannies as salvage?




Hi!,


       I have a  10kva pig that Id like to push 'up to' 70+ amps


 i now use a short peice of electric dryer element ( approx 3-3.5 ohms ) in 
a 5 gal bucket of water, it doesnt take long for the water to boil !!





         I have a bunch of transformer ' E ' & 'I' laminations . The 
winding window is close to 6" tall, so i thought of using 4" wide flashing. 
It comes in .012" - .014" thick ??? .....not sure how much current  4" / 
.012"  aluminum could handle ?





             Thanks!! ,dave B







> From: dh@xxxxxxxxxxxxxx
> To: tesla@xxxxxxxxxx
> Subject: RE: [TCML] 100kVA trannies as salvage?
> Date: Wed, 29 Oct 2008 21:53:31 -0700
> CC:
>
> Tell me how many amps you are looking at dealing with?
>
> Also, spot surplus price of copper (as well as most metals) has tanked in
> the last couple months. Another @#$% bubble...
>
> Retail price has yet to fall into place but it will eventually (if they
> don't run up another @#$% bubble).
>
> Dave (who is getting @#$% tired of "economic" bubbles!)
>
>
>
> > -----Original Message-----
> > From: tesla-bounces@xxxxxxxxxx
> > [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of david baehr
> > Sent: Monday, October 27, 2008 6:30 PM
> > To: Tesla Coil Mailing List
> > Subject: RE: [TCML] 100kVA trannies as salvage?
> >
> >
> >
> > Hmmm, i was just thinkin' about winding a J. Ladder ballast
> > with alum. flashing from da home depot, (with the high $ of copper )
> >
> >
> >
> >
> >
> >
> >
> >
> > what could I use between turns ,..maybe heavy cardboard
> > soaked with polyurthane ? would it work ??
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > > > From: rwsmith@xxxxxxxxxxxxxx
> > > > Subject: RE: [TCML] 100kVA trannies as salvage?
> > > > To: "Tesla Coil Mailing List"
> > > > Date: Monday, October 27, 2008, 3:49 PM
> > >
> > > > Yes, there is a pretty cool video on youtube that shows how
> > > > pole pigs are made and they do show the low side being wound
> > > > with aluminum sheet.
> > >
> > >
> > >
> > >
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