Re: HV Xfmr Protection networks

To: "'Tesla List'" <tesla-at-poodle.pupman-dot-com>
Subject: Re: HV Xfmr Protection networks
From: Tesla List <tesla-at-stic-dot-net>
Date: Mon, 30 Jun 1997 23:36:25 -0500
Approved: tesla-at-stic-dot-net


From: 	John H. Couture[SMTP:couturejh-at-worldnet.att-dot-net]
Sent: 	Monday, June 30, 1997 7:58 PM
To: 	Tesla List
Subject: 	Re: HV Xfmr Protection networks

At 05:50 AM 6/30/97 +0000, you wrote:
>
>From: 	Edward V. Phillips[SMTP:ed-at-alumni.caltech.edu]
>Sent: 	Friday, June 27, 1997 3:59 PM
>To: 	tesla-at-pupman-dot-com
>Subject: 	Re: HV Xfmr Protection networks
>
>"  This test will show very cleary which caps are the best to use. The test
>is DC and not RF but I have found it very reliable. A cap that is good with
>a DC test usually tests good at RF tests."
>John:  I have a bunch of Sprague "Vitamin Q" capacitors, 16 kV
>and 0.05 ufd capacitance.  The DC resistance is excellent, but
>the RF performance is so bad I can't even measure their dissipation
>factor at 200 kHz.  They are inserted-tab type, and have very
>high effective series resistance.
>Ed
>
----------------------------------------------

  Ed -

  Did you test the "Vitamin Q" capacitors at 10 KV DC? What were the results?

  How did you test them for dissapation factor and RF performance? 
  What were the results?
>
  I have had difficulties with these tests.

  John Couture

>