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RE: where to get dielectric oil? =

Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>


This Ebay guy has been selling oil for years:


I would worry about contamination...  Transformer oil and the use it goes 
into needs to be very clean and free of water.  Big substation transformers 
go through a dramatic oil drying and cleaning process (two big semis full 
of equipment)...  But if the thing is clean and you heat it say in the sun, 
that should be fine.

Transformer oil is free of light solvents and other odd oils that might 
attack insulation and such over time.  It also has a controlled dielectric 
constant with is sometimes important to the HV industry.  So it is better 
than just any oil if the application is really demanding.  Testing it with 
high voltage first is a good idea if it is really being pushed hard.



At 05:47 AM 8/19/2004, you wrote:
>About 4 years ago I tested several different type of oils and posted the
>results here.   I bought some HV oil from the power company.  I discovered
>not to walk into the main office and ask to buy HV oil you will be told
>that they do not sell it.  Go to the power company maintenance department
>and ask to buy HV oil.  They will sell it to you for about $2.00 a gallon.
>I tested lamp oil, 10wt non detergent motor oil, kerosene, diesel fuel, and
>several other oils.  As long as they have no additives they will all work
>fine.   Lamp oil from Wal Mart seems to be the easiest for everyone to find
>and it comes in quarts and gallons.   Get uncented lamp oil 100% pure oil.
>I tested the oil by placing an adjustable spark gap under the oil and
>connecting it to 15KV power supply.   Measure the gap and try different
>oils to see which one works best.   Put a cap in parallel with your
>transformer and test it again.
>Gary Weaver
>Why Wait?  Move to EarthLink.
> > [Original Message]
> > From: Tesla list <tesla-at-pupman-dot-com>
> > To: <tesla-at-pupman-dot-com>
> > Date: 8/18/2004 10:45:09 PM
> > Subject: where to get  dielectric oil?
> >
> > Original poster: "David Rieben" <drieben-at-midsouth.rr-dot-com>
> >
> > Hi list,
> >
> > I'm sure that this has been covered before, but where can I
> > get new dielectric transformer oil (like Shell Diala?) in small
> > quantities, like 5 gallon buckets? I assume just call one of
> > the local oil manufacturers?
> >
> > David
> >
> >