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vacuum switchs (fwd)
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From: Thornton, Russ #CSR2000 [SMTP:ThorntoR-at-rc.pafb.af.mil]
Sent: Monday, August 10, 1998 12:03 PM
To: 'Tesla discussion Group'
Subject: RE: vacuum switchs (fwd)
You are correct about SF6 producing a toxic gas after exposure to
arcing. We use it here on the Eastern Range to increase our radar power
capacity by filling the waveguide with it. It is a mess to clean out
also leaving a powdery residue. Best to avoid when you can plus the
cost has gotten very high.
Russ Thornton
CSR 2040,
Building 989, Rm. A1-N20
Phone: (407) 494-6430
Email: thorntor-at-rc.pafb.af.mil
>----------
>From: Tesla List[SMTP:tesla-at-pupman-dot-com]
>Sent: Friday, July 31, 1998 10:15 PM
>To: tesla-at-pupman-dot-com
>Subject: Re: vacuum switchs (fwd)
>
>
>
>---------- Forwarded message ----------
>Date: Fri, 31 Jul 1998 19:38:07 +0100
>From: Steve Rodway <Legion-at-legion-elec.demon.co.uk>
>To: Tesla List <tesla-at-pupman-dot-com>
>Subject: Re: vacuum switchs (fwd)
>
>Tesla List wrote:
>
>> another thought, has any one tried putting their spark gap in a housing
>> and presureizing it with some type of gas like nitrogen or sf-6?
>
> A nitrogen filled gap would work, and with a much higher voltage hold
>off and quench rate than in air, but the material of choice for high power
>high rep-rate spark gaps is hydogen! because it quenches exceptionally fast.
>SF6 would be a bad choice because under repetetive arcing toxic gas is
>produced.
>( I think I'm right on this)
> Hope this helps,
>
> Steve
>--
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