RE: Power factor correction

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Dave Halliday" <dh@xxxxxxxxxxxxxx>

My bad -- off by one order of magnitude on all the calcs...

No wonder I was popping all those breakers (NOT!)


> -----Original Message-----
> From: Tesla list [mailto:tesla@xxxxxxxxxx]
> Sent: Wednesday, June 21, 2006 11:26 AM
> To: tesla@xxxxxxxxxx
> Subject: RE: Power factor correction
>
>
> Original poster: "JT Bowles" <jasotb@xxxxxxxxxxx>
>
> a 15,000 @ 60MA XFMR is not 9KW. It is 900watts
>
>
> >From: "Tesla list" <tesla@xxxxxxxxxx>
> >To: tesla@xxxxxxxxxx
> >Subject: RE: Power factor correction
> >Date: Tue, 20 Jun 2006 22:06:12 -0600
> >
> >Original poster: "Dave Halliday" <dh@xxxxxxxxxxxxxx>
> >
> >He is not talking "modest"
> >
> >Your Jacobs Ladder makes a nice bzzzzzzrt, bzzzzzzrt, bzzzzzzrt sound
> >(at 3,000 Watts) while I bet that his sounds like a large
> wolverine in
> >heat. I have one from a 15KV 60MA (9,000 Watts) neon transformer that
> >sounds wonderful and I can only imagine what something
> running at 34KW
> >would be like.
> >
> >
> >
> > > -----Original Message-----
> > > From: Tesla list [mailto:tesla@xxxxxxxxxx]
> > > Sent: Tuesday, June 20, 2006 8:37 PM
> > > To: tesla@xxxxxxxxxx
> > > Subject: Re: Power factor correction
> > >
> > >
> > > Original poster: Skip Malley <skip@xxxxxxxxxxxxxxx>
> > >
> > > Am I missing something?
> > >
> > > An ideal transformer for a modest Jacob's ladder is an oil burner
> > > transformer of the 10KV / 30mA type.  To do a Jacob's
> ladder thing,
> > > that is the best XFMR to use.  For that, there also is no need for
> > > ballasting.  An oil burner transformer is designed to produce a
> > > continuous spark.
> > >
> > > Any Jacob's ladder that I have made draws about 3 amps
> from the 120V
> > > AC line with NO ballasting using an oil burner transformer.
> > >
> > > An X-Ray transformer is the wrong transformer for your
> application.
> > >
> > > Skip
> > >
> > > At 07:26 PM 6/19/2006, you wrote:
> > > >Original poster: "Mike" <mike.marcum@xxxxxxxxxxxx>
> > > >
> > > >I was making a Jacob's ladder with a dialed-down/ballasted x-ray
> > > >transformer (83v 41A in atm, limited by the 30A breaker
> and dry atm
> > > >'till I build a tank and vacuum it, ebay special so was
> shipped ups
> > > >dry to save shipping). Close to 38kV and 90 mA out (making a
> > > >mean-looking 12" arc). I wanted to power factor correct this so I
> > > >can pull more current without popping the breaker (or
> frying my 20A
> > > >variac). What I don't know is what the starting pf is without
> > > >measuring it (good pf DMM's I've seen are $250+). Most
> nst's use .5
> > > >as a rule of thumb for correcting those. Could this setup be
> > > >considered as a big nst? If so I think I need 1526uF that won't
> > > >change as the current/voltage go up as long as the
> ballast stays the
> > > >same (unless I goofed on the math somewhere).
> > > >
> > > >PS - The ballast is 2 E cores from old C & H sales 4500v
> > > >transformers with about 5 lbs 10awg and 2" spacers
> (draws like 8A at
> > > >83V with no gap) between them if that makes a difference.
> > > >
> > > >Mike
> > >
> > >
> > >
> > >
> > >
>
>
>
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