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Re: [TCML] pole pig ballasting
Hi Garry, Aaron,
Aaron is correct. 7200/12470Y volt rating is a much
more common primary voltage rating than just 12,470
volts. However, if "12470" IS the only thing stamped
on the nomenclature tag, then it is rated at12,470 volts.
BTW, if the low voltage side is rated at 277 volts, run-
ning 240 volts through a 240/280 volt variac will give
you the option of up to 280 volts input from a standard
240 volt service, which will put you just about right on
the nameplate rating target for the high voltage output ;^)
--
David Rieben
-------------- Original message --------------
From: jaholmes@xxxxxxxxxxxxxxxxxx
> If "7200" is nowhere on the nameplate, it probably is 12470V. That is very
> uncommon, but not unheard of. 7200/12470Y is, on the other hand, very common,
> and just means 7200V. So if all you see is "12470", you can be happy :-)
>
> 7200V would not be the end of the world by itself (it does present some solid
> challenges in spark gap design as David mentioned), but with the 277V secondary
> you would only be able to expect about ~6kV out with residential 240V service.
> Another kV off the already-low 7200V would be a major bummer.
>
> Anyway, if you have any questions about the nameplate data just post them here
> and those pig-wranglers among us will be happy to try and disambiguate anything.
>
> Cheers,
> Aaron, N7OE
>
> --- On Thu, 7/17/08, garry neeley wrote:
>
> > From: garry neeley
> > Subject: Re: [TCML] pole pig ballasting
> > To: "Tesla Coil Mailing List"
> > Date: Thursday, July 17, 2008, 11:36 AM
> > I hope it isn't 7200v. I haven't tested it yet.
> > The nameplate says primary
> > volts 12470, secondary 277/480y. So what is it guys 7200
> > or 12470?
> >
>
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