Steve,
The higher the frequency, the easier an arc starts. I think it has something to
do with the skin effect, not sure. They use high frequency generators to cause
the arc to start on tig welders and plasma arc machines. In this case, the
higher frequency would cause a corona to show up quicker I would think. Thing
is, I've never seen 6 kV act that way unless it was breaking a power connection
with a HV relay. Beleive it or not, that can be done without a vacuum relay.
They make special air gapped relays for this. There was something a while back
where I posted about a relay I once used and the link to it. It should be in
the archives as I cant remember the details.
Best,
Will
*********** REPLY SEPARATOR ***********
On 3/18/05 at 8:49 PM Steve Thompson wrote:
>R.Measures wrote:
>> On Mar 17, 2005, at 12:47 PM, Vic Rosenthal wrote:
>>
>>> R. Measures wrote:
>>>
>>>> At the voltage normally present - c. 6kV-pk - corona seems unlikely.
>>>
>>> Absolutely not!
>>
>> I have a high-pot tester and here at 120m above sea level I do not see
>> corona at 6kV.
>Is the onset of corona (visible or not) affected by frequency?
>
>Steve
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