Well, the rewinding guy at TRS took care of mine. It is now in "better than
new" condition.
Best regards - Bry Carling
> On May 11, 2014, at 5:20 PM, "Hank P" <pfizenmayer@q.com> wrote:
>
> If you reduce the air gap even with “insulation” the breakdown voltage goes
> DOWN not up. Now sometimes , if the air gap is sufficient , the “insulation”
> will modify the field of a sharp point or rough areas on a surface enough to
> keep it from breaking down – but it’s the field modification – not the
> “insulation” .
>
>
> Don’t feel bad , others had not thought about that either - years ago – on
> a military project – an air variable we had was arcing , and the capacitor
> vendor said he had the solution , he made us a special by putting teflon
> coating on the rotor and stator plates – it broke down at a lower voltage
> than before !!!!! After the fact it was obvious – but we all suckered
> ourselves in .
>
> But having said all that some Glyptal or about anything that will smooth that
> area – cover any sharp points and not decrease the air gap too much may just
> work.
>
> My recollection of that cap is it is made by TT or someone for them with
> spacers and plates all bolted together – you might be able to get a new
> plate/plates – or if you tore it apart you might be able to get the area
> very smooth . If it is out near the edge you could just remove that area
> completely and smooth off the cut edge .
>
> 73 Hank K7HP
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