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Re: New tranny arrived today, need ballast advice
A series inductance of approx 40-50 mH will provide current limiting to
around 30 AC Amps, 240 VAC.
Regards,
Dr. Resonance
-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Tuesday, February 22, 2000 1:45 AM
Subject: New tranny arrived today, need ballast advice
>Original Poster: "Adam" <adamsmith-at-mediaone-dot-net>
>
>
>My new GE transformer arrived today, and I'd like to get some suggestions
on
>how to current-limit it for 120V/20A service, and how many VA I can expect
>to use this at. The transformer is the following type:
>
> General Electric
> JVW-5 "Hi-Bute 60"
> 1500 V.A. (30 deg rise)
> 120:1 (14,400-to-120)
>
>Anybody use this same model? I know i've seen similar on some of the
webring
>sites. If that's your site, what are you ballasting it with? :-)
>
>Up to this point, I have only run my coils with banks of NSTs, so I really
>don't know the first thing about practical pig/pot ballasting solutions.
>I've read everything I can find in the pupman archives relating to
>ballasting and potential transformers, but I still have no concrete
examples
>to go by. What I have to work with are some NSTs, a pair of MOTs, and some
>old hotplates I've gotten from peoples' trash (the kind with a flat spiral
>heating coil--good power resistors?).
>
>My last question is: how many V.A. can I really use this thing at, for
short
>(under 30 second) runs. In other words, ignoring the heat factor
associated
>with continuous operation, how much current can I really safely extract
from
>this tranny?
>
>Thanks a bunch,
>
>Adam
>adamsmith-at-mediaone-dot-net
>
>