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4hv.org :: Forums :: High Voltage
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When did PCB oil come into use?

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sparky99
Wed Jun 04 2008, 08:51PM Print
sparky99 Registered Member #1159 Joined: Fri Dec 07 2007, 02:10AM
Location: Hudson Valley of NY State
Posts: 84
Hi all,
I have the opportunity to pick up a fluoroscope made in the early 20th century. Teens or early twenties. I think PCB's came into use in the '30's, so the oil in this transformer should be ok. Anyone know for sure?

Thanks,
Sparky99
Bob
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J. Aaron Holmes
Wed Jun 04 2008, 09:50PM
J. Aaron Holmes Registered Member #477 Joined: Tue Jun 20 2006, 11:51PM
Location: Seattle, WA
Posts: 546
Hi Bob:
My understanding of the timing is the same as yours, but I don't know of any exact dates. A lot of people apply a "Don't Ask, Don't Tell" policy to PCBs these days, but I'm with you; I'd prefer not to have 'em!

Have you got access to the fluoroscope in advance of buying it? If so, perhaps the present owner wouldn't mind letting you test the oil. He/she may even be interested in knowing the result, even if you didn't buy the unit. PCB test kits are ~$10-$15. They're a little tedious to use, but not that bad. I've used the Dexsil Clor-n-Oil(tm) ones before.

Cheers,
Aaron, N7OE
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sparky99
Wed Jun 04 2008, 10:30PM
sparky99 Registered Member #1159 Joined: Fri Dec 07 2007, 02:10AM
Location: Hudson Valley of NY State
Posts: 84
Yup, I've used those test kits before. Guess I'll order up a few more. I just don't like not knowing what I've got.

Bob
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