Re: Using 240VAC on 140VAC Varic

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

Original poster: "Richard Modistach" <hambone-at-dodo-dot-com.au> 

thats strange, i bought one of them,
480v input, 0-560v out 9.8Amp rating
on the spec plate.
same current draw specs as yours on 240v
but at 320ma i left it on for a while and there
was no percievable temperature rise in the core
and i was able to get 272v at the ouput.
at 0-140v your's must be different to mine.
i thought the batch he got were all the same.

regards
richard
aus.


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, February 10, 2004 11:48 AM
Subject: RE: Using 240VAC on 140VAC Varic


 > Original poster: "Ian McLean" <ianmm-at-optusnet-dot-com.au>
 >
 > Hi Dan,
 >
 > Yes.  I bought a variac from Oatley Electronics here in Australia that
came
 > from the U.S.  It was rated for 0-140AC.  It was part of a 3 phase stack.
 > It workes fine up to 2kVA on 240VAC, as long as you do not try and use the
 > step-up winding.  If you wire it without the step-up, the variac draws
about
 > 30mA without load, which is fine - but if you try and use the step-up
 > winding, the variac draws about 320mA, so I suspect the core is
saturating.
 >
 > PS: The variac only cost me Aus$40 ;)
 >
 > Rgs
 > Ian.
 >
 >  > -----Original Message-----
 >  > From: Tesla list [mailto:tesla-at-pupman-dot-com]
 >  > Sent: Tuesday, 10 February 2004 2:03 am
 >  > To: tesla-at-pupman-dot-com
 >  > Subject: Using 240VAC on 140VAC Varic
 >  >
 >  >
 >  > Original poster: "Mccauley, Daniel H" <daniel.h.mccauley-at-lmco-dot-com>
 >  >
 >  > Has anyone tried running 240VAC on a variac rated for 0-140VAC ?
 >  > I know there are issues, but just curious if anyone actually tried it.
 >  >
 >  > Thanks
 >  > Dan
 >  >
 >  >
 >
 >
 >