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Re: oil dielectric

Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>" <davep-at-quik-dot-com>

Tesla list wrote:

> Original poster: "David Thomson by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <dave-at-volantis-dot-org>

Hi Dave T:

> Hi Dave P.,

>>>We're talking about enclosed containers with no air.  There is
>>>no way the arc will contact the oil.

> 	The Power Cos probably blow one transformer a day,
> 	nationwide, 'enclosed in containers with no air'.
> 	The accompanying fires (and, occasionally, explosions)
> 	can be found in the news paper.

> In case you are not aware,

	I am, thanks.

> the power company transformers are iron cored.   This produces

> a lot more heating than an air cored transformer.  Do you have
> any data on air core, oil jacketed secondaries?

	Nope.  My point was more to the consequences, than the
	detailed causes.  Power Cos do not routinely run
	at least one, and usually two sets of highpower
	arc/spark systems in close proximity, either.

	As to standpipes, (from another strand), indeed, venting
	is a good idea, but What gets Vented WHEN can take some
	design.  If something goes wrong and the standpipe
	vents oil, which splashes someplace unfortunate...

	My suggestion is to plan for what happens to the overflow.