Re: REQ for info (HV insulating fluid) (fwd)

---------- Forwarded message ----------
Date: Fri, 24 Jul 1998 11:20:38 -0600
From: "D.C. Cox" <DR.RESONANCE-at-next-wave-dot-net>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: REQ for info (HV insulating fluid) (fwd)

to: RM Craven

Regular transformer oil will work fine to replace the freon.  If you prefer
gas, sulfur hexaflouride, SF6, will work even better but it is difficult to
obtain in small quantities.


> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: REQ for info (HV insulating fluid) (fwd)
> Date: Thursday, July 23, 1998 10:02 PM
> ---------- Forwarded message ----------
> Date: Thu, 23 Jul 1998 17:51:30 +0100
> From: R M Craven <craven-at-globalnet.co.uk>
> To: Tesla List <tesla-at-pupman-dot-com>
> Subject: REQ for info (HV insulating fluid)
> I have just acquired a wideband HV 'scope probe, a Tektronix P6015.
> The probe will work upto 13kV unfilled, or 40kV when filled with a freon
> insulating fluid. These ratings are for the total DC and AC peak, upto
> 75MHz.
> The freon is no longer available due to bans on CFCs etc. so I have some
> questions to allow me to find something equivalent, if i eventually need
> do so.
> 1. Does anyone know the name, number or spec. of the original grade of
> which was used? I need to know the dielectric strength and also the rel.
> permittivity.
> 2. Can anyone suggest an alternative fluid?
> Thanks in advance,
> Richard Craven, Malvern, England