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Looking for high powered nst or a potential transformer

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LAN_403

811a vttc

Tue Aug 10 2010, 03:46PM

Registered Member #3097 Joined: Tue Aug 10 2010, 03:35PM
Location: Ontario Canada
Posts: 13

I need about 240ma, so if some on had 2 120ma nst or 4 60ma i would buy them, i really would like a PT, i have $350 in my budget i could maybe go higher buy my $ is very limited. thx

btw as far as shipping i live in southern Minnesota.

811a vttc

Tue Aug 10 2010, 04:07PM

Registered Member #3097 Joined: Tue Aug 10 2010, 03:35PM
Location: Ontario Canada
Posts: 13

I could use a pig, but i don't wan't to if some one sell me a cheap one yes, but i would prefer a potential transformer

radiotech

Tue Aug 10 2010, 04:47PM

Registered Member #2463 Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546

A PT is a terrible waste for reverse burden sourcing. You may be able to find a control transformer in scrapped or decommissioned metal-clad switchgear.

811a vttc

Tue Aug 10 2010, 04:53PM

Registered Member #3097 Joined: Tue Aug 10 2010, 03:35PM
Location: Ontario Canada
Posts: 13

were could i find high powered nst the highest i could find are 60ma but i've seen people on on youtube with 120ma, if i could find 2 120ma but i don't know were to get one any ideas?

quicksilver

Tue Aug 10 2010, 06:05PM

Registered Member #1408 Joined: Fri Mar 21 2008, 03:49PM
Location: Oracle, AZ
Posts: 679

811a vttc wrote ...

were could i find high powered nst the highest i could find are 60ma but i've seen people on on youtube with 120ma, if i could find 2 120ma but i don't know were to get one any ideas?

Some time back there was a custom Neon Sign shop in a town near where I lived and I had asked for old NST's and eventually made acquaintance w/ the owner. I asked lot of questions of the owner and he said that NST's above 60ma are rather rare. In fact many companies that mfg NST's are now moving to a lower voltage as well as solid state as more are being made for the European market and apparently there is a cap on the design (& cost factors).

As much as many folks don't jump for joy at amazing1.com, they apparently have invested into a transformer affair and put their label on them now. They say they can do some "custom" designs. You MAY be able to find what you need if you approach them via phone and "talk cash". The designs with higher current DO exist (they won't be new obviously) but many are found where actual signs are made locally such as Las Vegas.

811a vttc

Tue Aug 10 2010, 06:21PM

Registered Member #3097 Joined: Tue Aug 10 2010, 03:35PM
Location: Ontario Canada
Posts: 13

how hard would it be to take a couple of shunts out, and btw i have a couple of obits that i could put in parallel, but one stopped working i thought maybe i could fix one of the wingdings, but i don't know how to get the transformers out of the epoxy resin?

811a vttc

Tue Aug 10 2010, 10:54PM

Registered Member #3097 Joined: Tue Aug 10 2010, 03:35PM
Location: Ontario Canada
Posts: 13

I found a place today that sells refurbished pole pigs, the guy quoted me $340 for a 10kva 14,400/28,800 pig this INCLUDES SHIPPING
This sounds like a pretty good deal doesn't it? if any one wants to know the site just ask ;)

ScotchTapeLord

Wed Aug 11 2010, 12:32AM

Registered Member #1875 Joined: Sun Dec 21 2008, 06:36PM
Location:
Posts: 635

Why not just post the site? I'm very curious!

quicksilver

Wed Aug 11 2010, 01:01AM

Registered Member #1408 Joined: Fri Mar 21 2008, 03:49PM
Location: Oracle, AZ
Posts: 679

811a vttc wrote ...

how hard would it be to take a couple of shunts out, and btw i have a couple of obits that i could put in parallel, but one stopped working i thought maybe i could fix one of the wingdings, but i don't know how to get the transformers out of the epoxy resin?

This depends a great deal on the manufacturer and the potting. Some NST's are completely potted in a tar-like material that may simply be to difficult to get through. Those that use a high grade epoxy are just too much work to consider. So basically you have a true "unknowns" in that question.
Now the OBITs are another story entirely because the likelihood of getting two exact duplicates are high; which would simplify some things. I have heard of some that were 60 ma as well.

I have my own thinking about Pole Pigs. I think that they will eat up enormous amounts of energy from the home, that the alteration of the circuit breakers may be an issue and that, frankly, you are dealing with a very lethal situation aside from everything else. That's a "no second chance" device. Where a man with calloused hands making a single contact (ONE HAND in the pocket) may get thrown across the room with a NST, anything like a pole pig won't give you a fair shake (no pun interned).

Dave Marshall

Wed Aug 11 2010, 04:26AM

Registered Member #16 Joined: Thu Feb 02 2006, 02:22PM
Location: New Wilmington, PA
Posts: 554

Thread locked for multiple infractions.

-Dave

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