Re: this was probably really stupid

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> 


Ed:

I have always wondered how these long distance EHV lines avoid producing
excessive corona.

The cables do not appear to be very large in diameter --- perhaps an inch or
two at best.  With that small radius and diameter, why don't they emit
tremendous corona?

With corona inception potential around 67 kV per inch (30 kV/cm) they should
be glowing a lot with their small diameters.  Especially in rainy weather.

Dr. Resonance

Resonance Research Corporation
E11870 Shadylane Rd.
Baraboo   WI   53913
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, May 25, 2004 6:02 PM
Subject: Re: this was probably really stupid


 > Original poster: Edward Wingate <ewing7-at-rochester.rr-dot-com>
 >
 > Tesla list wrote:
 >  >
 >  > Original poster: Mike <megavolts61-at-yahoo-dot-com>
 >
 >  >
 >  >  >Adam
 >  >      A Power line is limited to about 345kV to avoid corona formation
 >  > whereas a Tesla coil produces corona and promotes leader formation
 >  > intentionally.   Now if there is a coiler somewhere in south central
 >  > Florida(lightning capital of the USA) who can build one in a large open
 >  > field and can make a very good ground (which seems to be harder than
 >  > expected here in North Florida - cannot assume a 160 ft deep well
casing
 >  > will actually make a good ground here strangely enough),  and finally
could
 >  > set up some kind of tower that it at least as tall as a big power
 >  > line.....who know's?     Any coilers in Florida have some money to burn
for
 >  > the sake of the ultimate spark length record?
 >  > Amusingly,
 >  > Mike
 >
 > Mike,
 >
 > Not true about the power line voltage. There are a good number of 500
 > and 765 KV AC transmission lines and +/-500 KV DC transmission lines in
 > the US and they are experimenting with UHV AC lines up to 2.25 MV!
 > "Voltage levels of AC transmission circuits vary from 34,500 to
 > 2,250,000 volts" quote from page 4-10 in The Lineman's and Cableman's
 > Handbook/ eighth edition
 >
 > Ed Wingate RATCB
 >
 >
 >