I've hipotted a lot of 213. Never seen any leakage at 15KV DC which is
the max on my. If you put 259 on them, the BDV is around 4500 V though.
The weak spot on this sort of cable is not the cable itself but rather
the connectors. I used HV silicon wire which is good for some fantastic
amount (40KV or something) but the best HV connector I could find was a
very mechanically light-weight SHV (?) thing which i'm sure would break
if you whacked it a bit.
Good luck Jim.
73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com
On 5/13/19 9:10 AM, Steve 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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