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RE: [TCML] Corona Supression
I've used that 2 part stick epoxy to successfully prevent corona. Its
blue and comes in a tube. You cut it to size and scrunch it up in your
hands until it is well mixed, then apply liberally until you have a 1/4"
coating or so...smooth it out so it looks nice. Its thick and easy to
apply. It gets hard as a rock and can be sanded/painted. Might try the
corona dope as an inner layer and this on the outside.
Shannon Weinhold
Klasdja
-----Original Message-----
From: Brandon Hendershot [mailto:brandonhendershot@xxxxxxxxx]
Sent: Sunday, May 16, 2010 11:48 AM
To: Tesla Coil Mailing List
Subject: Re: [TCML] Corona Supression
I got a few bolts used as terminals I'd like to cover up. Some other
structural nuts and bolts running close to wires I'd like to get some
extra assurance on as well. I figured a round cap nut ought to suffice,
but I prefer the idea of sticking on some rubber insulation.
Any kind of rubber caps good for HV? I remember seeing something pretty
fitting of the description in the hardware section down at home depot.
It looked way too thin though...
On May 16, 2010, at 10:33 AM, Christopher Karr <chriskarr4@xxxxxxxxxxx>
wrote:
>
> Hello Brandon,
>
> May I ask what the intended use is (I.e. the potential you're trying
> to suppress and the size of the connections which you're trying to
> cover)?
>
> In my experience, corona suppression is as easy as:
> - using too much solder and forming a 'blob' on the joint;
> - using larger gauges of wire at connection points;
> - after soldering, doing 'touch-up' work with sandpaper (various
> gauges, possibly, and finishing with 400-grit);
> - after smoothing out the free-air connection, insulating it with an
> insulative varnish (perhaps even corona-dope).
>
> If you wish to test these, I recommend you use a highly-susceptible
> joint and then use the method described. The joint, of course, being
> a test-piece, as opposed to the actual part of the structure.
>
> Good luck!
>
> - Christopher Karr
>
>> From: brandonhendershot@xxxxxxxxx
>> To: tesla@xxxxxxxxxx
>> Date: Sat, 15 May 2010 20:38:34 -0700
>> Subject: [TCML] Corona Supression
>>
>> Hi All,
>> There was a post I read a while back, don't remember what it was
>> about, but someone had mentioned that they would eventually end up
>> covering every little point that wasn't smooth with "corona
>> supressing
>> caps". Does anybody know exactly what these are and where I could get
>> them and/or make them?
>> Thanks,
>> Brandon
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>
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