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Re: Westinghouse Transformers (newbee)

Tesla List wrote:
> 
> > Subject: Westinghouse Transformers (newbee)
> 
> Subscriber: bert.hickman-at-aquila-dot-com Mon Feb 17 14:22:39 1997
> Date: Mon, 17 Feb 1997 06:58:17 -0800
> From: Bert Hickman <bert.hickman-at-aquila-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Re: Westinghouse Transformers (newbee)
> 
> Tesla List wrote:
> >
> > Subscriber: voltmaster-at-juno-dot-com Sun Feb 16 21:47:09 1997
> > Date: Sun, 16 Feb 1997 18:06:53 EST
> > From: Nick h McQuiston <voltmaster-at-juno-dot-com>
> > To: tesla-at-pupman-dot-com
> > Subject: Westinghouse Transformers (newbee)
> >
> > Hi all
> >
> > I am new to this list so forgive me if this topic has already been talked
> > about.
> >
> > About two weeks ago I was digging around in a junk yard and found 8
> > westinghouse
> > step down transformers. They are encased in hard rubber and measure 10in.
> > by 10in. by 12in. Luckily one had a plate on it saying < Type PTM Ratio
> > 1:120  Primary 14400V F.W. imp. test 95>. I took one and sparked a 30VDC
> > power supply off the secondary an the primary threw a spark about an inch
> > and a half to two inches.
> >
> > I just wondered if any one knew how to wire one up in reverse to run a
> > TC.
> >
> > -Nicholas McQuiston
> > voltmaster-at-juno-dot-com
> 
> Nicolas,
> 
> Grab thoses puppies! They're potential transformers, precisely wound
> instrumentation type transformers that work very nicely as mini-pole
> pigs on Tesla Coils. The 120:1 is the ratio of input:output voltage.
> Power companies use these to precisely measure high voltages by stepping
> them down - 14,400 volts in divided by 12000 = 12- volts out. It works
> the other way around for Tesla Coils! Typical power ratings are 1 to 3
> KVA.
> 
> Like a pole pig, however, these transformers REQUIRE an external ballast
> to limit short circuit current. Grab these if you can get them cheaply -
> they're valuable for coiling and for trading stock with other
> knowledgable coilers. BTW, where are you located geographically - there
> are probably some coilers on the list who are already drooling!
> 
> Safe coilin' to you!
> 
> -- Bert --

Bert -


  Shouldn't that be 14,400 / 120(ratio) = 120 volts out??? Boy, I'd
love to have a TC power supply that ran on 12 volts...but I guess that
would entail a bazillion amps on the line side though... ;-)

 - brent (bturner-at-apc-dot-net)