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Re: NST insulations
>Original Poster: Megavolt121-at-aol-dot-com
>
>Hi All,
> I'm trying to enhance one of my 15/60 Jefferson NSts. Hopefully i can
>get
>200ma, but before i get there, I must overcome arcing problems. Right now
>while i cut off shunts(these da#-at- Jefferson's don't have those
>"remove-a-shunts" and i need to cut them) it runs dry for testing to make
>sure it'll run. I usually run it dry for about 3-4 secs -at- 75% power on my
>variac. After i push up the power, i get an arcing from my Secondary to my
>core. Of course i turn it off here. What i want to know is if there is
>anything temporary that i can use to prevent arcing during my testing? When
>i'm done w/ the de-shunting process, I plan on potting the nst back in
>vaseline. Is there anything bad w/ using Vaseline? I also have about 5
>gallons of mineral oil i can use to re-pot, but that is really really messy
>and i want to avoid that.
>Stumped!
>-Alan
>
>
Having never de- or Re potted an NST I have a few questions :)
I have 3 15/60 Jeffersons (the baby-blue painted ones) filled with the
standard Black Tar. They are all dead from Tesla Duty, most with one side
toast.
1. Is a hot-plate suitable for cooking them? Other ideas? The oven is NOT an
option :)
2. Can I do this without stinking up the house?
3. How do I remove the shunts?
4. How do I identify the shunts?
5. How many can I remove without toasting the thing?
6. If Vasoline is used, how do I make sure to fill all the air spaces?
7. What are other good potting compounds? I would prefer something easy to
work with, and not liquid.
8 Is it better to keep it in it's original case, or would somehting like a
5Gal bucket be better?
9. Can wooden forms be used to place and center the core in a bucket? (I
have seen this done with BIG transformers in oil)
thanks guys.
Chris B.
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