[Boatanchors] AmerTran Plate Transformer specs ?

[ELDIM]

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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