Re: commercial cap failure

• To: tesla-at-pupman-dot-com
• Subject: Re: commercial cap failure
• From: Esondrmn-at-aol-dot-com (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Tue, 18 Apr 2000 18:11:06 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

In a message dated 4/18/00 11:07:52 AM Pacific Daylight Time, 
tesla-at-pupman-dot-com writes:

<< Original Poster: "Jeffery Pederson" <kd4lyh-at-webtv-dot-net> 
 
 Hello fellow coilers,
 Not a good day for me. I just sent my cap back to Plastic Capacitors
 Inc. for an autopsy. It was working great then all of a sudden it
 started to spew oil. This was purchased on 2-29-00. It was a tesla cap
 30KVAC.RMS .05 MF. I was using a 14.4KV/5KVA pole transformer. I dont
 know what happened but I hope that Plastic Capacitors Inc. will honer
 the warranty as this cap was expensive. 
 I talked to Tom Brown who was very understanding.
 Best Regards Jeff
  >>
Jeff,

I lost two Condenser Products caps on my system using a 14.4kv/5kva 
transformer before I realized I had a 60hz resonance problem with the welder 
used as ballast in the primary.  I have no idea how much voltage I was 
putting across the caps but it was way more than I intended.  I take it you 
are using a rotary gap?  Do you have a safety gap across the rotary?  I first 
added one across the caps and discoverd the problem.  I couldn't turn the 
variac up past half way without firing the safety gap - set at 5/8".  Thanks 
to Bill Wysock for figuring out what was causing my problem and helping me to 
fix it.

I actually killed two C.P. caps with this set up.  They replaced one under 
warranty, which was nice since I undoubtedly killed it with overvoltage.

Ed Sonderman

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