It doesn't kill the reactance, but I'm not quite sure where it ends up. The
secondary short is to prevent a loose pair of HV terminals.
--Mr. Postman (Doug Brunner)
<dabrunner-at-earthlink-dot-net>
-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Wednesday, November 04, 1998 2:52 AM
Subject: Ballast
>Original Poster: "Vivian Watts" <V.C.Watts-at-btinternet-dot-com>
>
>Hi all,
> I have just acquired an Uninteruptable Power Supply (UPS) from a scrap
>yard. The model is an Upsonic 200 A series if that means anything to
>anyone. Its rated at 2KW for 10 minutes. Anyway it has a large
transformer
>in it which I guess is a step up of 1:2. I'm hoping to get a pole pig soon
>and was considering using this a ballast. The inductance comes out at
>0.125H on the primary and 0.25H on the secondary. I've heard of people
>shorting out the secondary on welders but surely this then presents zero
>inductive impedance then. Any thoughts?
>
>Regards
>
>Viv Watts UK
>
>
>