Re: photocopier transformers

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

Original poster: "Thad Howard by way of Terry Fritz <twftesla-at-qwest-dot-net>" <thoward-at-nhm-dot-org>


 Jim, and all,

 I bought four of the 5021G10 transformers to experiment with
 your "more high voltage power" circuit.  The only info printed on the
 xfmr is the G.E. part #.

 I connected a 12v 20va xfmr to the primary of each and got secondary
 meter of 270v. and a 3rd winding meter of 31v.
 They all metered the same.  I then connected the pri. of each to a 20a
 variac.  Dialed up to 12v, 18, and 22v.  The secondary results were
 270v, 400v, and 490v respectively.  3rd windings 31v, 45v, and 57v
 respectively.

 Does this mean that for a 4500v secondary, the primary must be
 220v?  Is there anything wrong with my method of testing them for
 voltage?   My xfmrs and yours have the same part #,  my resistances are:
 pri 1.2 ohms, sec 266 ohms, tert 4.8 ohms.  Are yours the same.   Am I
 overlooking the obvious?

    Thanks for the articles on your website.  I will be studying
"measuring transformer parameters" next.

Thad




Tesla list wrote:

> Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<jimlux-at-earthlink-dot-net>
>
> C&H TR9407
>
>  4500 VAC HIGH VOLTAGE TRANSFORMER G.E. #9T68Y5021G10. Input: 115VAC 60Hz -at-
> 8 amps. Outputs: 4500 VAC no-load, 400 mA short circuit,and 660 VAC.
> Dimensions: 7" wide x 6" high x 6" deep. Weight 30 lbs. 10 MFD660 VAC
> required and included. Stock #TR9407 $50.00
>
> http://www.candhsales-dot-com/  is the website
>
> http://www.aaaim-dot-com/CandH/images/TRFS/TR9407.gif is the photo
>
> ----- Original Message -----
> From: "Tesla list" <tesla-at-pupman-dot-com>
> To: <tesla-at-pupman-dot-com>
> Sent: Wednesday, December 19, 2001 9:32 PM
> Subject: Re: photocopier transformers
>
> > Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <Hollmike-at-aol-dot-com>
> >
> > Steve,
> >    I looked for my C & H catalog, but couldn't find it.   i mentioned in a
> > previous post I saw a photocopier tranny the had 5kV and 300ma out.   I
> might
> > have been thinking of one on the same page in the catalog the photocopier
> > tranny did.  My memory could have finally given out..lol   seemed like the
> > shipping weigth was in excess of 30 or 40 lbs.  It's been a while since I
> > looked at it, so who knows what I remember.
> > Mike
> >
> >
> > >
> > > J,
> > >
> > > Have a look at candhsales-dot-com in their transformers section of the
> on-line
> > > catalog.  You will see those transformers.  A pair of them have been
> > > reported to do well in TC service.
> > > --Steve
> >
> >
> >
> >
> >
> >