I think the have wire you want to use is GTO-15; good for 10 kV. The coax
wasn't made for HV duty.
On Mon, May 13, 2019, 8:01 PM Steve <g8gsq72@gmail.com> wrote:
> Indeed, other brands give the same number. I wonder if they all measure
> exactly the same result?
>
> If you search for voltage breakdown figures for the polyethelyene
> dielectric you'll find numbers from 18kV/mm (450V/mil) going upwards.
> RG213 has dielectric 2.5mm/100mil thick.
>
> OK, these are numbers for large flat surfaces at sea level with no
> humidity etc., and coax has an inner with curvature (although far short
> of a sharp point) but even so I think there's a lot of headroom above a
> 5kV figure.
>
> Steve
>
> On 13/05/2019 14:10, Joe wrote:
> > Interesting,
> >
> > I was curious on this also, so Googled it and Pasternack has a datasheet
> > for RG-213U
> > and it says it is only 5K
> >
> > Max. Operating Voltage(VRMS): 5000
> > https://www.pasternack.com/images/ProductPDF/RG213-U.pdf
> >
> > Joe WB9SBD
> >
> > On 5/12/2019 12:13 PM, Steve Thompson wrote:
> >> I think 213 will take that easily. It was a while ago, but I'm sure
> >> that I couldn't detect any leakage on 213 with my tester maxed out at
> >> 16kV. A local 'maker' group used it to repair a 35kV lead on a laser
> >> cutter. As far as I know it's working ok.
> >>
> >> Good quality RG58 should take 8kV without any problems - again, I've
> >> had it at the limit of my tester. I suspect the cable working voltage
> >> specs are often derived from connector limitations.
> >>
> >> Steve
> >>
> >>
> >>> Does anybody know how much max V is on RG-213 ? Like what are the
> >>> results if a hi-pot tester used..
> >>> and say cranked up to the point where just a few microamps occurs
> >>> . I have an application where I need a HV
> >>> cable, less than 10 ft, that will easily handle 5700 / 7700 vdc. It
> >>> will be hardwired at both ends, no HV connectors. And with braid
> >>> peeled way back from the center conductor, like 2-4 inches . The
> >>> plan was to also wrap some red electrical tape every few inches along
> >>> its entire length, to readily identify it as a HV cable.
> >>>
> >>> Tnx.... JIm VE7RF
> >>
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> >>
> >
> >
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