RE: PCB test kits....5KW transformers

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: gary350@xxxxxxxxxxxxx 

My opnion is,  most of the stuff at the scrap yard is exactly where it belongs.



-----Original Message-----
>From: Tesla list <tesla@xxxxxxxxxx>
>Sent: Jul 15, 2006 11:03 AM
>To: tesla@xxxxxxxxxx
>Subject: RE: PCB test kits....5KW transformers
>
>Original poster: "Jack King" <ekklekktikk@xxxxxxxxxxx>
>
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>
>
>>From: "Tesla list" <tesla@xxxxxxxxxx>
>>To: tesla@xxxxxxxxxx
>>Subject: RE: PCB test kits....5KW transformers
>>Date: Fri, 14 Jul 2006 20:32:46 -0600
>>
>>Original poster: gary350@xxxxxxxxxxxxx
>>
>>
>>
>>I went to the scrap yard today.  The 3 transformers are bolted to
>>some type of heavy steel beam mounting fixture device designed to
>>bolt to a power line pole.  The scrap yard refuses to sell only the
>>transformers.  They want me to buy the entire thing including the
>>steel mounting device.  It weighs in at 1247 lbs.  At 50 cents a lbs
>>that comes to $685.85 with sales tax.  If the metal fixture is
>>removed, guessing weighs aprox 1000 lbs, resold for 4 cents a lbs.
>>then $685 minus $40 = $645.85.  I personally would not pay this
>>price.  If I could buy the transformers without that (ship anchor)
>>the price would be closer to reasonable...
>
>Your metal yard is WAY out of line with scrap prices! as they pay
>nowhere near what they are asking you to pay! 25 cents a pound is
>more realistic, and at that, they should let you un-bolt the
>transformers from the useless frame.
>
>I guess I'm fortunate to have great rapport with a place I horse
>trade stuff with, and in return, I give them leads on big
>decommisioned multi Mva transformers - so they kinda like me...lol.
>Heck, my yard would swap me for "like scrap" - as they really don't
>care so much about what the commodity or working status is - just so
>the copper and iron are present...
>
>
>>I wanted to mention the transformers looks like gray plastic with
>>white insulators on top. They ohm out fine.
>
>I'm sure they are perfect. Maybe these are old buried vault type
>transformers...worth having, but not at 50 cents-lb.
>
>>There is also a dumpster full of HV insulators.  These things are
>>hugh about 6 ft long probably 10" diameter with a bunch of metal
>>stuff bolted to them.  I bet one of these insulator weighs 200 lbs
>>or more.  Interesting junk but I have no use for it.
>
>Big monster coilers and freakish furniture makers like these things.
>Imagine the coil platform or end table lamps you could build...lol
>
>Jack
>
>>Gary
>>
>>
>>
>>
>>
>>-----Original Message-----
>> >From: Tesla list <tesla@xxxxxxxxxx>
>> >Sent: Jul 14, 2006 4:46 PM
>> >To: tesla@xxxxxxxxxx
>> >Subject: RE: PCB test kits....5KW transformers
>> >
>> >Original poster: "Jack King" <ekklekktikk@xxxxxxxxxxx>
>> >
>> >They are definately worth snagging - if the $ is right. Being dry
>> >from the get go, no PCB worries, and they will save your aching back!
>> >
>> >Depending on a few factors, you could configure "the twins" in a
>> >series-series or series -paralelly config, so you could utilize 220
>> >in and get 10,000 out @ double the current or 20,000 V out...Heck any
>> >Neon shop would be happy for such a rig.
>> >
>> >Also, even though they state 110 pri (or sec I guess) maybe they are
>> >bi-filar wound, so you could recnfigure the lv side in
>> >series...Lastly, the voltage drop you would realize from something
>> >like a slide choke would place things down in the 160-170 v realm -
>> >SO- seing that all utility stuff is way overbuilt and would have a
>> >high BIL voltage, you could *likely* get away with overvolting the
>> >transformer for the limited duty cycle runs you would (likely) be
>> >using it for...
>> >
>> >Grab em' if they are affordable - and I sincerely doubt the utility
>> >would have any use for them anyway!
>> >
>> >CHeers!
>> >
>> >Jack KIng
>> >
>> >holler at me if you need a suitable ballast too :) 801-604-5136
>> >
>> >
>> >>From: "Tesla list" <tesla@xxxxxxxxxx>
>> >>To: tesla@xxxxxxxxxx
>> >>Subject: PCB test kits....5KW
>> >>Date: Thu, 13 Jul 2006 19:03:34 -0600
>> >>
>> >>Original poster: gary350@xxxxxxxxxxxxx
>> >>
>> >>I talked to Bobby Stevens at the power company maintenance shop.  He
>> >>says it is extremely rare to find a transformer these days with
>> >>PCBs.   The last one they found was 5 years ago.  They dump the PCB
>> >>oil into a burn tank with lots of other used oil and set it on fire.
>> >>
>> >>There are 3 old power line transformers at the scrap yard that the
>> >>power company trashed.  They are all DRY type transformers.   The
>> >>tag on one transformer is marked 110 VAC secondary, 10,000. VAC
>> >>primary, single phase, 5 KW, the date is 1950.  The insulators on
>> >>top are about 4" tall.   The tag on the other transformer says the
>> >>same thing only difference is its 3KW.
>> >>The other transformer has NO tag but the physical size is identical
>> >>to the 3KW transformers.   Bobby Stevens said they were cleaning up
>> >>and found them back in the corner of the building probably been
>> >>there for 50 years.   He figures they are probably good other wise
>> >>they would not have been saved all these years.   They can be bought
>> >>at the scrap yard but I did not ask, HOW MUCH.  I figured they arn't
>> >>much good being 110 volts 45 amp.   What do you all thing???
>> >>
>> >>Gary
>> >>
>> >>...........
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