RE: Greg's MOT New Stack (artwork, ballast explanation, etc.)

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Gregory Hunter by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ghunter31014-at-yahoo-dot-com>


> Is anybody ballasting their MOT supplies? I'm not

Yes. I am.

> sure I understand the
> necessity of the huge capacitances. Problems with

Because I'm running four (4) MOTs capable of drawing
over 6kva from a single 20 Amp outlet. Without
ballasting, the breaker trips within seconds, which is
a good thing, since the light-duty power cord would
probably melt within a minute if the breaker didn't
intervene.

The HV-side ballast capacitors are not huge. They are
actually kind of small--only .97uF/2200wvac each. I
run 6, 8, or 10 of them in series with the high
voltage circuit to limit the current IAW the
capacitive reactance formula.

> power arcing? Perhaps MOT
> power is stiffer than even Pole distro xfmr power? I

Not likely. A pole transformer can run at two or three
times its rated load without breaking a sweat. A used
5kva pole pig can beat up a MOT stack with one bushing
tied behind its back.

> would think some series
> resistance on the HV side would help.

Help with what?

> Dave H
> 
> 
> 
> Cheers,
> 
> Andy C.
> Internet Homepage: http://users.rcn-dot-com/tcobaugh/
> 
 
Best Regards,


=====
Gregory R. Hunter

http://hot-streamer-dot-com/greg