[Boatanchors] AmerTran Plate Transformer specs ?

[Chris Howard]

Thanks!

That helped a bunch.

I was able to cobble together a 1 volt AC supply using
a variac and a 6 volt filament transformer. Hooking that
up in different combinations gave me the following outputs

     in  --> out
1 --  4  --> 62 volts
1 --  3  --> 69 volts
1 --  2  --> 72 volts

other combinations ( e.g.  2-4) gave very high
voltage readings.

It sounds exactly like what you described.

Chris
kc0atc




On Sat, Dec 25, 2004 at 05:47:23AM -0800, ELDIM wrote:
> Hello Chris,
> If the primary has continuity on all terminals with respect to each other
> terminal on the primary then you most likely has a tapped primary.  I.E.
> Term 1 = 0 or Common, Terminal 2 = 105 Volts, Terminal 3 = 115 Volts;
> Terminal 4 = 125 Volts.  What I would do is take a variac rated at 10 Amps
> and place it on the two outside terminals 1 & 4.  Connect a high voltage
> meter on the secondary. and carefully turn the variac up and observe the HV
> indication.  If you have voltage then you are in business.  Now to determine
> if this is a 125 Volt or a 220 Volt version.  If it is a 125 volt xfmr, then
> for each volt input you you should get about 50 volts output.  I.E. 10 volts
> on the primary would produce 500 Volts on the secondary. If the 10 volts
> produces approx 250 volts then you have a 220 xfmr.   Now, if there was no
> voltage, then you have a dual primary.  You can use term 1&2 or 3&4 for the
> test.  If you're makinging a HV Supply for a hefty RFAmplfier, and you want
> to safely control the output, then you shour use a 20 Amp or higher Variac
> to control the HV. MERRY CHRISTMAS.
> 
> 73,
> Glen Galati, KA7BOJ
> Tacoma, WA
> eldim at att.net
> 
> ----- Original Message -----
> From: "Chris Howard" <chris at yipyap.com>
> To: <boatanchors at mailman.qth.net>
> Sent: Friday, December 24, 2004 7:37 PM
> Subject: [Boatanchors] AmerTran Plate Transformer specs ?
> 
> 
> >
> >
> > I'm trying to figure out how to wire up this plate
> > transformer.  The label says:
> >
> > Plate Transformer
> > Spec No. 26579    Ser No 368962
> > Sec test 15000V    Cyc 60
> > 105V Pri   Sec 6200V
> > type W  KVA 2  Phase 1
> >
> >
> > On the side with the label (the 'top') it
> > has four insulator/connectors on one end,
> > all the same size, arranged in a line.
> > On the other end of the top there are three
> > insulator/connectors, two large and one
> > smaller, arranged in a triangle with the
> > smaller in the middle, sort of.
> >
> > I'm thinking the four-in-a-row is the primary
> > side and the three-in-a-triangle is the secondary.
> >
> > To use this with 110V AC input, will I need to
> > put any jumpers on the primary?  Which of the four
> > do I connect to?
> >
> > Thanks!
> >
> > (yes, I tried a ohm meter,  but the results really
> > didn't clear things up for me.  All of the four-in-a-row
> > had very small resistance to all others.)
> >
> > Chris
> > kc0atc
> >
> > --
> > Chris Howard                                     YipYap.Com
> > chris at yipyap.com                                 Estes Park, Colorado  USA
> > current Estes Park weather --  http://www.yipyap.com/wscurrent.html
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> >

-- 
Chris Howard                                     YipYap.Com
chris at yipyap.com                                 Estes Park, Colorado  USA
current Estes Park weather --  http://www.yipyap.com/wscurrent.html