Re: [TCML] Disassebling a huge transformer

[drieben@xxxxxxxxxxx (David Rieben)]

Hi Garry,

If you could find you a nice large isolation transformer like
this one: http://www.flickr.com/photos/pslawinski/2682686962/
in my Green Monster control panel, there wouldn't be any 
need to tear apart the core. The isolation tranny pictured is 
a Toshiba 10 kVA rated (extremely overbuilt for this rating)
240 volt - 120/208/240 volt transformer. I say that it's ex-
tremely overbuilt in that it weighs over 230 lbs. and I regularly
process 20 kVA through it for shirt runs without a hitch. I'm
not sure exactly what it come out of but am reasonably sure 
that it was is some type of medical environment. The source
that I obtained it from was the same one time source of x-ray
transformers. Unfortunately, that source seems to have now
dried up ;^(

The way that I run this particular transformer as a ballast 
is to run the 240 volt input tap in series with the input to
the load (pole pig for the big coil or the x-ray transformer 
driven JL) and short the 120 volt output tap. There are 
like 6 paralleled leads that tie into that one 120 volt output
tap and I had to clip about half of them to "throttle back"
the amperage to stay mostly under 150 amps! This still
makes for one wicked ballast that's just barely more re-
sistance than a dead short at 240 volts input and allows
for about a 130 to 150 amp draw from a non-shunted 
x-ray tranny or pole pig whose HV output is being power 
arced ;^) woohoo! Its output amperage is generally limited
to "only" around 90 amps when driving the Green Monster ;^)
Once I landed this iso transformer, I ceased all further 
search for the "perfect" ballast as this seems to be just that
for me.

--
David Rieben

-------------- Original message -------------- 
From: "garry neeley" <bamacoiler@xxxxxxxxx> 

> Het Guys I aquired a gigantic transformer for my pig ballast. I want to 
> rewind it to make a reactor. My question is Does anyone know of a good way 
> to get the I seperated from the E. The I section is bolted together with 
> threaded rod. At the top where the E and I meet the laminations are 
> interleaved together. This transformer is big, mid section exceeds 25 
> square inches. Weighs over 300 lbs. Should I simply cut the I section 
> off? Are there any good methods for this? 
> Bamacoiler 
> _______________________________________________ 
> Tesla mailing list 
> Tesla@xxxxxxxxxxxxxx 
> http://www.pupman.com/mailman/listinfo/tesla 
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla