RE: MOT power supply?

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

Original poster: "Loudner, Godfrey by way of Terry Fritz <twftesla-at-qwest-dot-net>" <gloudner-at-SINTE.EDU>

Hi J

I connected the cores of two MOTs together and grounded the connection. The
core of a third MOT was connected to one of the two HV leads, and the core
of a fourth MOT was connected to the other HV lead. With proper phasing, the
primaries were all connected in series. I have two 120/240/480, 3kVA
industrial transformers hooked in parallel for 6kVA. Using a 240 volt/50 Amp
service main,  the 6kVA outfit was used to supply 480 volt to the MOT
outfit. I was able to draw some large arcs. The insulation held up, but I
don't know how well it would hold up in Tesla service. At least the outside
MOTs should under oil, and probably all four MOTs should be under oil.
Because the transformers in the 6kVA outfit got very warm, the current draw
must have been high. I was surprised that the MOTs were only warm.  

Godfrey Loudner     

> -----Original Message-----
> From:	Tesla list [SMTP:tesla-at-pupman-dot-com]
> Sent:	Tuesday, December 18, 2001 7:52 PM
> To:	tesla-at-pupman-dot-com
> Subject:	MOT power supply?
> 
> Original poster: "J Whyte by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <xoom321-at-hotmail-dot-com>
> 
> I was thinking of using 4 (1.1 kW rated) 120V MOT's in series for
> increased 
> voltage, I will run them off 240V to achieve
> (10 kVAC+ -at-440 mA). The MOT's may need to be submerged in transformer oil
> to 
> prevent insulation breakdown----so thats what I was planning on doing.
> 
> How does this plan sound so far? Will the transformers hold up? Is my plan
> 
> flawed???
> 
> I want long powerful sparks! But I really don't want to run out and pay
> $700 
> for a pole transformer!
> 
> 
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