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Getting an old pole pig!!

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LAN_403

Experimentonomen

Sat Oct 04 2008, 09:45AM

Registered Member #941 Joined: Sun Aug 05 2007, 10:09AM
Location: in a swedish junk pile
Posts: 497

On old pigs, an oil change wouldent hurt, over the years, the gasket dries up and lets moisture in.

Arcstarter

Sat Oct 04 2008, 05:19PM

Registered Member #1225 Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253

Well i tried firing it up with a shorted nst then i figured MORE POWER! I used an mot and then 2 mots, and the arcs where thick and beautiful. I used a long pvc pipe wire a wire on it. I taped the wire and then i used a belt from a vacuum cleaner, to make sure the wire did not fall and light me up. I got the ring off the pig but it is sitting in the middle of my front yard cause it was too heavy for the dolly and it busted the wheel. I will get another dolly and move it to my back yard and then i will take it apart the rest of the way.

This thing is a beast, and it weighs 629 pound... Don't know how the hell i got it onto a dolly.

J. Aaron Holmes

Sat Oct 04 2008, 05:42PM

Registered Member #477 Joined: Tue Jun 20 2006, 11:51PM
Location: Seattle, WA
Posts: 546

Hey there, Arcstarter:

...voltage?
...KVA?

629lbs would really amaze me. Is that what the nameplate says? If the thing really is 629lbs, I'm going to guess 25kVA or more. No 5, 10, or even 15kVA unit at 7.2 or even 14.4kV is going to weigh that much. Not even close! From the look of it, I'd guess that it's in the 300-400lbs range at most. If you don't know how you lifted 600+lbs onto a dolly, you probably didn't

Cheers,
Aaron, N7OE

Arcstarter

Sat Oct 04 2008, 05:52PM

Registered Member #1225 Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253

I just looked again, there is no decimal between the 5 and 0.... It is 50kva!! 90kv BIL and it says 13kv and 7kv voltage rating, so that has me confused. It is definitely 629 lbs, and i am pretty happy about it even though i will never use it above say 2kva, but at least it will not die.

J. Aaron Holmes

Sat Oct 04 2008, 06:13PM

Registered Member #477 Joined: Tue Jun 20 2006, 11:51PM
Location: Seattle, WA
Posts: 546

Wow, ok. Well, 50kVA and 600+lbs seem like a match! As for the voltage, I'm guessing the actual numbers on the nameplate say something like "7600 / 13200Y". Ignore the "Y" voltage; that is for three-phase connections involving more than one transformer. The single transformer is 7600V.

Or perhaps you rounded up when you said "13kV" and really meant 12470V, in which case the nameplate probably reads "7200 / 12470Y". In this case, you'd have a 7200V transformer.

Let's see more pics!!

Cheers,
Aaron, N7OE

Dr. Drone

Sat Oct 04 2008, 06:35PM

Registered Member #290 Joined: Mon Mar 06 2006, 08:24PM
Location:
Posts: 1673

Congrads on the Pig !!!

Just one thing I will say, if you get hooked up to the pig it will boil the blood and blow off the limb! You do not get another chanceâ€¦..so for goodness shakes please be very careful sir!

Sure hope the oil is not PCB?

Cheers,
Ch

Arcstarter

Sat Oct 04 2008, 08:54PM

Registered Member #1225 Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253

Dr. Spark wrote ...

Congrads on the Pig !!!

Just one thing I will say, if you get hooked up to the pig it will boil the blood and blow off the limb! You do not get another chanceâ€¦..so for goodness shakes please be very careful sir!

Sure hope the oil is not PCB?

Cheers,
Ch

Thanks for the concern. You will not have to worry though, i have been shocked badly once, about 4 years ago and ever since then i have not been shocked badly. I have been shocked by a flyback and of course static electricity but nothing bad. I know getting shocked by flybacks is still bad but it is only when it tracks along the surface, has carbon tracks, or if it is high enough voltage sometimes with 50 volt input it will go through the insulation.

When i drew arcs from the pig i had a wire secured to a long pvc pipe with electrical tape and i also wrapped a belt tightly around it from a vacuum to ensure it the wire will not fall off and light me up:P.

I have a question, there seems to be a pressure release valve on the side, the kind like the one on an air compressor to let the air flow out, and when i pull it air flows in. Should there be a vacuum? I know it will not hurt it but is it required or do they only suck the air out after they put the oil?

teslacoolguy

Sat Oct 04 2008, 09:17PM

Registered Member #1107 Joined: Thu Nov 08 2007, 10:09PM
Location:
Posts: 792

The valve is there because if the pig fails and the oil starts to boil or whatever it basically relieves the pressure so the pig doesent go BOOM!! There may still be a vacuum in there from the manufacturing when they put the oil in. There is no difference if you have air in there now but in fact that is a good sign that the pig has no leaks and is a very good sign that no water leaked in.

Myke

Sat Oct 04 2008, 09:21PM

Registered Member #540 Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969

I think the way they make it is they have a vacuum pump running when they pour in the oil so that there is no air bubbles. The pressure release valve is so that if the oil happens to boil, the transformer doesn't turn into a bomb... They still can explode though if the oil catches on fire

Best of luck with the pig. Please stay safe.

EDIT: ahh, beat me to it.

rp181

Sat Oct 04 2008, 09:42PM

Registered Member #1062 Joined: Tue Oct 16 2007, 02:01AM
Location:
Posts: 1529

i think you should get a PCB tester.

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