Re: Dr R's 16KV 300ma transformer

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

Original poster: "S&JY" <youngsters-at-konnections-dot-net> 

My 4-MOTs, with primaries all in parallel, no PFC and no load, draw 17.6
amps at 118 v, which is about 2 KVA.  The secret with MOTs is to run them at
105 volts or less to get the cores out of semi-saturation.  My 4 draw 7.5A
at 105V.  Yes, MOTs typically are iron deficient.
--Steve Y.

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, August 02, 2004 8:08 AM
Subject: RE: Dr R's 16KV 300ma transformer


 > Original poster: "David Trimmell" <humanb-at-chaoticuniverse-dot-com>
 >
 > Eric; 1.6KW is a lot of heat. Something isn't right, that's beyond a
 > power-factor issue, I think. These are MO tranies? If so, they are
 > seriously iron deficient so I would expect them to pull a lot of
 > current, but not close to what you mention.
 >
 > Regards,
 >
 > David Trimmell
 >
 > -----Original Message-----
 > From: Tesla list [mailto:tesla-at-pupman-dot-com]
 > Sent: Sunday, August 01, 2004 6:15 PM
 > To: tesla-at-pupman-dot-com
 > Subject: Re: Dr R's 16KV 300ma transformer
 >
 > Original poster: "Hydrogen18" <hydrogen18-at-bellsouth-dot-net>
 >
 > I guess shunted transformers can be done right(although the only other
 > kind
 > I can think of are welders, which dont really matter much as long as
 > they
 > burn well). But with my 4 pack I have a HUGE magnetizing current(1600
 > watts!). I guess part can attributed to bad power factor and the fact
 > that
 > the cores are running at 70000+ lines of flux per sq inch. But why dont
 > all
 > transformers have shunts? I know the winding over winding method
 > prevents
 > the use of them, but I'm sure shunts could save more than one small
 > transformer which was accidentally shorted/wired wrong/etc.
 >
 > ---Eric