[Amps] RG-213 Hi pot ?

[Jeff Blaine]

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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>>>
>>
>>
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