Wouldn't the insulation between windings eventually saturate with the oil
thus allowing better heat transfer from deep inside?
Larry N5BIP
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
Behalf Of Will Matney
Sent: Wednesday, March 22, 2006 12:50 PM
To: amps@contesting.com
Subject: Re: [Amps] RE : MW Oven Transformer question
What they used to do on oil cooled transformers, is places some thin wood
strips between each layer making a small windown that the oil could seep
though. Of course using oil on a regular transformer will only help to a
small degree, I agree. If the oil can't make it to the mean turns of each
winding, it's about useless except for keeping the core cooler.
Best,
Will
*********** REPLY SEPARATOR ***********
On 3/22/06 at 8:50 AM Bill Turner wrote:
>ORIGINAL MESSAGE:
>
>At 04:35 AM 3/22/2006, Larry Carman wrote:
>
>>Not to drift off the subject too much, but I've heard that some hams many
>>years ago would drop there amp's HV transformers in a bucket of oil and
>run
>>the heck out of them, much over there rated current. Anyone out there ever
>>done that?
>
>*********** REPLY SEPARATOR ***********
>
>I'm sure this will increase the transformer's power rating some, but
>the problem is the oil can only remove heat from the outside of the
>unit, not from deep inside. That's where overheating would occur
>first. Heat transfer from the inside to the outside is slow and a
>surge might do you in. Also, the oil itself would have to be cooled
>if you're going to operate for any length of time.
>
>Better to just get a bigger transformer.
>
>Bill, W6WRT
>
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