Towertalk
[Top] [All Lists]

Re: [TowerTalk] Oil for Dummy Load

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Oil for Dummy Load
From: Jim Lux <jimlux@earthlink.net>
Date: Sun, 29 Nov 2015 12:32:52 -0800
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 11/29/15 12:01 PM, Jim Lux wrote:
On 11/29/15 11:19 AM, Joe Subich, W4TV wrote:

Check the properties of peanut oil before you use it.  I can't quickly
find the breakdown voltage for peanut oil ... dielectric constant is
slightly higher (3 vs. 2.2) and dissipation factory almost 10 times that
of mineral oil but it may not be an issue in this application.



In these things, the electrical properties are almost immaterial. It's
not like a transmission line or capacitor where the permittivity or
dissipation factor are important.




Some of the literature seems to suggest Canola oil but Soy oil seems to
be the base of choice as "eco friendly" replacements for mineral oils
(e.g. Envirotemp FR4).

Cheap single weight motor oil might be a good alternative.  Tesla
coilers have used it for insulation (not in capacitors, but for oil
insulation of HV gear).

Straight USP mineral oil is also a good alternative.  Available at feed
stores as an animal laxative in gallon containers.




You can also get the real thing (Univolt or Diala, for example), but generally it's available only in 5 gallon pails, or more commonly, 55 gallon drums. It runs about $5-10/gallon depending on the price of crude, how long the jobber has had it sitting there, etc.






_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk

<Prev in Thread] Current Thread [Next in Thread>