[R-390] Isolation Transformer

Tue, 5 Aug 2003 16:12:59 -0400 (EDT)

OK, I took a closer look at these transformers.
They are Isolation transformers.
1KVA. 120 in and out. The taps may be changed for 240V in plus some
other variations. Output taps may be changed as well for 100-125V

Have two of them.
They are pretty with covers over taps showing arrangements for various
voltages. No exposed terminals. They weigh 32lb. Packed will weigh
35lb.

How about $55/each plus ship from 30114...
I have fed ex ground account with pickup so
it won't be too bad. estimate $40 for cross country..
and around 20 for  adjacent states.

-Bob
ah7i/w4

On Mon, 4 Aug 2003 [email protected] wrote:

>
> Have a pair of 240-120 (or the other way round if you like)
> here. IIRC 1KVA CCS but may be a little bigger.
>
> Can wire for isolation, step up, step down or 480V if you need...
>
> They are in Canton GA...destination ebay but I'm no where
> near that pallet yet so if interested, write...
>
> -Bob
>
>
> On Mon, 4 Aug 2003, Gary E Kaufman wrote:
>
> > Dave -
> >
> > 	You can grab most any 2 large filament transformer with the appropriate
> > wattage ratings and put them back-to-back.  I used a pair of 56v/3A
> > transformers for many years set up as 115:56<--->56:115 with good success
> > while repairing AC/DC tube radios.  There was about a 5% voltage drop over
> > line voltage.
> >
> > 	Admittedly this may be tough if you really need a 750-1000 watt unit.
> >
> > 	Also check with local hospitals - most any medical device in patient
> > contact requires isolation.  I've pulled some very nice isolation
> > transformers out of discarded equipment.  The medical engineering folks are
> > often very helpful and might be willing to donate some discarded equipment
> > that you can pull them from.
> >
> > 	- Gary
> >
> > -----Original Message-----
> > From: David Medley [mailto:[email protected]]
> > Sent: Sunday, August 03, 2003 10:17 PM
> > To: [email protected]
> > Subject: [R-390] Isolation Transformer
> >
> >
> > I am being driven crazy by the earth leakage cutout thingies or whatever
> > you call them. The leakage due to the line filters especially in older
> > radios trips them all the time.
> > Can anyone advise me where I can get an isolation transformer about
> > 750-1000 watts.
> > Thanks
> > Dave
> >
> > _______________________________________________
> > R-390 mailing list
> > [email protected]
> > http://mailman.qth.net/mailman/listinfo/r-390
> >
> >
> > _______________________________________________
> > R-390 mailing list
> > [email protected]
> > http://mailman.qth.net/mailman/listinfo/r-390
> >
>
> _______________________________________________
> R-390 mailing list
> [email protected]
> http://mailman.qth.net/mailman/listinfo/r-390
>