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4hv.org :: Forums :: High Voltage
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Oil type for HV transformers and coils

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GammaRay
Sun Nov 11 2012, 06:47PM Print
GammaRay Registered Member #5323 Joined: Fri Jun 15 2012, 02:14PM
Location:
Posts: 104
Before going to the cost & lead time of ordering the core material to wind a custom HV inductor, I want to see if I can use an existing inductor that I will submerge in oil to see if that will suppress/resolve an arcing problem. Question is: What type oil is recommended to submerge HV transformers or coils in?

Thanks in advance.
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Dr. ISOTOP
Mon Nov 12 2012, 03:16AM
Dr. ISOTOP Registered Member #2919 Joined: Fri Jun 11 2010, 06:30PM
Location: Cambridge, MA
Posts: 652
Ideally, you'd use real transformer oil, such as Shell Diala.
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Patrick
Mon Nov 12 2012, 04:23AM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
I have several threads on this matter, to save you the bore, you can use non-detergent motor oil, canola, olive or electrical device oil like diala or univolt.

i use canola on the large devices , and olive (yellow, virgin) on devices where the oils is part of the circuit, like my HV probe.
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Shrad
Mon Nov 12 2012, 11:58AM
Shrad Registered Member #3215 Joined: Sun Sept 19 2010, 08:42PM
Location:
Posts: 780
branded frying oil is also nice for this

resists oxydation and high temperature, and nearly free
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