Re: [TCML] pole pig ballasting

["DC Cox" <resonance@xxxxxxxxxxxx>]

Dr. Steven Caldwell, a Tesla coil enthusiast, lives in Madison, TN.

Steve is a researcher in special materials used in reactive armor and
related fields.

Dr. Resonance




On Thu, Jul 17, 2008 at 6:15 PM, David Rieben <drieben@xxxxxxxxxxx> wrote:

> 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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