Re: Paralleling Choke for Paralleling a 3 phase variac???

To: tesla-at-pupman-dot-com
Subject: Re: Paralleling Choke for Paralleling a 3 phase variac???
From: dhess1-at-us.ibm-dot-com (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Mon, 13 Mar 2000 16:22:59 -0700
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme



What's the worst that could happen if I run a 3-phase Variac as a single
phase device without the chokes? I hear of coilers doing this without any
ill effects.

Daniel


>A less "elegant" way to handle this would be to use a small high current
>single-winding reactors in the output leg of each variac to be
>paralleled (except possibly the first). Two chokes would be necessary to
>of circulating currents, it does not eliminate them as in the first
>circuit. However, each choke only needs to carry approximately the
>output current from its variac plus a small circulating current.

>Hope this helps!

>-- Bert --