Re: Coax Cables for High Voltage Transmission (fwd)

[<sroys@xxxxxxxxxxxxxxxxx>]

---------- Forwarded message ----------
Date: Thu, 18 Nov 2004 12:07:07 -0500
From: Jack Vandam <snotoir7674g@xxxxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Coax Cables for High Voltage Transmission (fwd)

Maybe Devcon "plastic welder" epoxy?  I have some here and have been using
it to keep mineral oil from leaking from a sealed polycarbonate container.
So far, seems to be working very well, but I haven't tried it with PP or PE
plastics.

Jack

----- Original Message -----
From: "High Voltage list" <hvlist@xxxxxxxxxx>
To: "hvlist" <hvlist@xxxxxxxxxxxxxxxxx>
Sent: Thursday, November 18, 2004 11:47 AM
Subject: Re: Coax Cables for High Voltage Transmission (fwd)


> Original poster: <sroys@xxxxxxxxxxxxxxxxx>
>
>
>
> ---------- Forwarded message ----------
> Date: Wed, 17 Nov 2004 22:34:46 -0600
> From: Dr. Resonance <resonance@xxxxxxxxxx>
> To: High Voltage list <hvlist@xxxxxxxxxx>
> Subject: Re: Coax Cables for High Voltage Transmission (fwd)
>
>
> As I recall it's made by Devkon.  I'm in AZ so I can't run out to the shop
> and check.
>
>
> Dr. Resonance
>
> Resonance Research Corporation
> E11870 Shadylane Rd.
> Baraboo   WI   53913
> ----- Original Message -----
> From: "High Voltage list" <hvlist@xxxxxxxxxx>
> To: "hvlist" <hvlist@xxxxxxxxxxxxxxxxx>
> Sent: Wednesday, November 17, 2004 9:55 PM
> Subject: Re: Coax Cables for High Voltage Transmission (fwd)
>
>
> > Original poster: <sroys@xxxxxxxxxxxxxxxxx>
> >
> >
> >
> > ---------- Forwarded message ----------
> > Date: Wed, 17 Nov 2004 14:14:32 -0500
> > From: Jack Vandam <snotoir7674g@xxxxxxxxxxxxxx>
> > To: High Voltage list <hvlist@xxxxxxxxxx>, hvlist
> <hvlist@xxxxxxxxxxxxxxxxx>
> > Subject: Re: Coax Cables for High Voltage Transmission (fwd)
> >
> > Thanks for sharing!  If I might ask, what type of epoxy are you using to
> > glue the PE tube to the metal?
> >
> > Thanks,
> > Jack
> >
> > ----- Original Message -----
> > From: "High Voltage list" <hvlist@xxxxxxxxxx>
> > To: "hvlist" <hvlist@xxxxxxxxxxxxxxxxx>
> > Sent: Wednesday, November 17, 2004 2:00 PM
> > Subject: Re: Coax Cables for High Voltage Transmission (fwd)
> >
> >
> > > Original poster: <sroys@xxxxxxxxxxxxxxxxx>
> > >
> > >
> > >
> > > ---------- Forwarded message ----------
> > > Date: Wed, 17 Nov 2004 11:06:01 -0600
> > > From: Dr. Resonance <resonance@xxxxxxxxxx>
> > > To: High Voltage list <hvlist@xxxxxxxxxx>
> > > Subject: Re: Coax Cables for High Voltage Transmission (fwd)
> > >
> > >
> > > Polyethylene or polypropylene works better as it has less creepage and
> > > leakage current factors than pvc.
> > >
> > > We drill out the entire interior part of a SO-239 chassis connector.
> They
> > > we epoxy a 5 inch long PE tube into the SO-239 connector.  At the end
of
> > the
> > > tube we epoxy in a small bananna receptacle.
> > >
> > > This allows a nice fit to standard RG-8 cable as a DC HV connector.
The
> > > shield is soldered to the PL-259 plus while the center part is
stripped
> of
> > > the braided shield as it extends into the PE tube with a bananna tip
> > solder
> > > to the coax cable tip.
> > >
> > > Dr. Resonance
> > >
> > > Resonance Research Corporation
> > > E11870 Shadylane Rd.
> > > Baraboo   WI   53913
> > >
> > > >
> > > > John, thanks for sharing your info on the hv connectors!  That
design
> > may
> > > be
> > > > just what I have been looking for.  I hope you don't mind if I ask
you
> a
> > > > couple of questions:
> > > >
> > > > What diameter and lenth of pvc pipe did you use and does it tightly
> fit
> > > the
> > > > polyethylene jacket of the cable?
> > > >
> > > > I see you used sheet pvc for the ends of the insulators.  Could pvc
> end
> > > caps
> > > > have been used instead?
> > > >
> > > > Any other info you want to share would be appreciated.  I have a
+/-45
> > KV
> > > > metal housed x-ray transformer sitting here for which I would like
to
> > > access
> > > > the high voltage for hobby and other uses.  Right now, it's sealed
> > inside
> > > > the case and I have been thinking of making recessed terminals and
> > > > connectors so I can have high voltage access.  The insulated pve
> > recesses
> > > > would be mounted through holes drilled through the metal chassis.
> > > > Connectors/ insulators similar to yours may in fact do the trick.
> This
> > > > route may be the cheapest method (which is what I seek) and the
other
> > > > alternative is to remove the transformer and rehouse it in a new
> > > container.
> > > > Didn't have much with that option until lately when I found some pvc
> > > "boxes"
> > > > that would work, although they are expensive.
> > > >
> > > > Thanks,
> > > > Jack
> > > >
> > > > ----- Original Message -----
> > > > From: "High Voltage list" <hvlist@xxxxxxxxxx>
> > > > To: "hvlist" <hvlist@xxxxxxxxxxxxxxxxx>
> > > > Sent: Tuesday, November 16, 2004 2:20 PM
> > > > Subject: Coax Cables for High Voltage Transmission (fwd)
> > > >
> > > >
> > > > > Original poster: <sroys@xxxxxxxxxxxxxxxxx>
> > > > >
> > > > >
> > > > >
> > > > > ---------- Forwarded message ----------
> > > > > Date: Mon, 15 Nov 2004 13:37:39 -0700
> > > > > From: John Doran <johnd@xxxxxxxxxxxxxxx>
> > > > > To: hvlist@xxxxxxxxxx
> > > > > Subject: Coax Cables for High Voltage Transmission
> > > > >
> > > > > Howdy!
> > > > >
> > > > >
> > > > >
> > > > > I use polyethylene-insulated RG-8 cable extensively for
high-voltage
> > > > >
> > > > > use in my laboratory, at potentials up to 20 kV, and I have never
> had
> > a
> > > > >
> > > > > problem with it.
> > > > >
> > > > >
> > > > >
> > > > > Spellman High Voltage uses it for potentials of only up to 8kV in
> > their
> > > > >
> > > > > products,
> > > > >
> > > > >
> > > > >
> > > > > www.spellmanhv.com/tech/appnotes/AN-07.doc
> > > > >
> > > > >
> > > > >
> > > > > but I have a Del Electronics 40kV power supply "brick" that
employs
> > RG-8
> > > > >
> > > > > cable for its output connection.
> > > > >
> > > > >
> > > > >
> > > > > I have devised a simple HV connector for use with coaxial cable,
and
> > > > > which
> > > > >
> > > > > may be modified for just about any potential.  I have posted
details
> > on
> > > > > my
> > > > >
> > > > > Web site-take a look at
> > > > >
> > > > >
> > > > >
> > > > >             http://timefracture.org/reg.html
> > > > >
> > > > >
> > > > >
> > > > > for more information and some photographs.  Please stay safe!
> > > > >
> > > > >
> > > > >
> > > > > -John
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > > >
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> > >
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> >
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