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
>>
>>...........