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