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[TCML] Re: Old GE instrument transformer (fwd)



Hi folks.  I got this today and thought I'd forward it to the list.
Here's the location of his pictures:

http://www.pupman.com/current/stevej/

If anyone can help him, please reply directly as he's not on the list.

Thanks in advance.

Chip

---------- Forwarded message ----------
Date: Fri, 29 Jan 2010 22:56:05 -0500
From: Steve Johnson <steve@xxxxxxxxxxxxx>
To: Chip Atkinson <chip@xxxxxxxxxx>
Subject: Re: Old GE instrument transformer

Hey Chip,

Not sure if this thing has any liquid in it, but after moving it several times it has no "swish", and banging on it leaves a hollow sound, as opposed to the dull "thud" of a liquid-filled thing.

Here's a couple low-light pics (attached)... may not be able to take daylight pics before Monday.... lemme know what you and your people think ahout it.

- Steve

Hi Steve,

It looks like you have a potential transformer.  That's a pretty high
ratio but it sounds neat and sellable if it's not got any pcbs in it.  Is
it full of liquid or can you tell?

Send the pictures if you can, because that would really help.  If you have
a place to put them for web access, then others can see them too.  If not,
I can put them on my site.

Chip

On Fri, 29 Jan 2010, Steve Johnson wrote:

 Dear Chip,

 I came across your Tesla coil site while trying to research a very
 old GE transformer I just picked up.  I've had no luck so far, other
 than thinking that the GE monogram on the ID plate "looks" like it
 might be pre-1929.

 If you or one of your group might be able to help me find out when
 this puppy was made, what it was originally for and what it might be
 worth, I'm interested in learning and also in selling.

 I can send pics tomorrow, but meanwhile case is square-ish with
 rounded corners, brown, 11-1/2" wide by 14" deep by 10" tall.  It has
 two large ceramic insulator poles on top, one brown and one white.
 Has two handles on top and four mounting brackets on the base.
 Weighs something like 120 pounds.  When bench tested at 40-70 volts
 input it produced 1:100 output ratio and a nice thick arc that nearly
 melted an ordinary electronics test connector wire at about 1 inch
 from the hot pole.

 The ID plate on top reads:

 INSTRUMENT TRANSFORMER
 POTENTIAL

 NO. 4899551		FOR 11500

 SPEC. 3151012-53		VOLTS LINE TO LINE

 TYPE E-21			DESIGNED FOR

 V.A. 200			CORRECT RATIO

 CYC. 60			AT 115 V.

 SEC. VOLTS 115		100 V-A

			AT ??100% PF

 READ INST. GEH-230


 Thanks in advance for any help you and your gang can provide, and I
 hope someone can use this groovy relic.

 - Steve Johnson


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