Re: [TCML] NST Reactive Primary Amperage Consumptions

[David Dean <deano@xxxxxxxxxxxxxxxx>]

Hi

Your next post answers the question. You are using power factor correction 
capacitors. When the transformer is "shorted" by the arc, the PFC cap is doing 
its job and minimizing the current, the source sees a resistive load and 
reactive currents are canceled. When the transformer is "idle" it current is 
only that required to magnetize the core, and the PFC cap is "the load" on the 
source, reactive of course, but that is the current you are seeing on the meter, 
the current through the cap. You would see very near the same current at the 
same voltage if you took the transformer out of the circuit.

later
deano

On Thursday 22 April 2010 10:45:24 am Miles Mauldin wrote:
> I saw the post about the 10kVA pole xfmr and was very surprised.  I don't
>  have a pole pig, wish I did, but I do have 3 12kV NSTs paralleled for a
>  1kVA output.  I was noticing the other day while messing with a Jacobs
>  Ladder that my current consumption was greater without the arc in the
>  ladder.  I thought it rather odd that my current would be greater at a
>  lower voltage without arcing than at a higher voltage with basically a
>  short. 
> http://www.cmnow.com/TeslaMan/Meter-Amps.JPG shows a tad over 7 amps at
>  roughly 85V and about 2 amps at 100V when the Ladder was firing.  Anyone
>  'splain this one to me? 
> Thanks,
> Miles
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