RE: HV Wire - electrical tape?

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Original poster: "Mccauley, Daniel H by way of Terry Fritz <teslalist-at-qwest-dot-net>" <daniel.h.mccauley-at-lmco-dot-com>



First off, how many turns are you planning on putting on the primaries???
If its a small number, i have some
excellent quality 60kV high voltage wire which I'd be willing to part with.
We typically use this wire to
make prototype high voltage inductors.  Also, what frequency are you
planning on using this transformer for??

Dan





I took the square core from a large filament transformer for a two tube
x-ray system and removed the two secondary coils. Leaving the two primaries
in place, I replaced the two secondary coils with two new high voltage
coils, which were originally intended for a dental x-ray transformer. My
intention is to place the two primaries in parallel and series the high
voltage coils, without center grounding to the core. To cut the labor
involved in insulating the HV coils from the core, I decided I'll use vinyl
foam weatherstrip, soaked in polyurethane. Using an x-ray transformer, I
tested the idea. There was an immediate arc through at the glue seam. Bad
Idea! Now its back to proven methods. Now I don't feel bad at losing ten
rolls of that 69 kV splicing tape on ebay.

Godfrey Loudner

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, January 01, 2003 11:47 PM
Subject: Re: HV Wire - electrical tape?


  > Original poster: "Harold Weiss by way of Terry Fritz
<teslalist-at-qwest-dot-net>" <hweiss-at-new.rr-dot-com>
  >
  > Hi All,
  >
  > I do not think tape would work.  The first HV cap I built used 69KV
splicing
  > tape.  The HV blew thru it like it wasn't there.  I think the voltage
went
  > thru the gap of adhesive between the rubber-like tape.  The same would be
  > true of E-tape.