Re: 2 broken 300-500amp 20-40v dc arc welders

• To: tesla-at-pupman-dot-com
• Subject: Re: 2 broken 300-500amp 20-40v dc arc welders
• From: Mark Finnis <mefinnis-at-medicine.adelaide.edu.au> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Fri, 05 Nov 1999 14:54:16 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

At 12:15  04/11/1999 -0700, you wrote:
>Original Poster: chester lowrey <lowrey-at-interpac-dot-net>
>
>hi everyone i am getting at least one industrial 100% duty cycly broken arc
>welder on thursday and am wondering about the parts i can expect to get out
>of it. i very briefly looked into the case and there are 3 smaller(1 foot
>by 1 foot) presumbly low voltage xfmrs and i think one much larger one but
>havn't examined it enough. there are also some very large low voltage caps
>and i think a variac but dont know what size variac to expect this whole
>thing runs off 3 phase 220v i think it draws around 10-20 kva. also i plan
>on rewinding one or more of the xfmrs for HV and would appreciate any
>advice from people who have done it before.

try:    http://www.adelaide-dot-net.au/~mefinnis/tf_rebuild.htm

I'm no expert but it gives you an idea of what I went through.

Quite a lot of work but the end result is pretty darn robust ;-)

Cheers

Mark

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