Re: Why no corona?

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

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

They do have corona loss... However, they also take efforts to reduce it by 
increasing the effective diameter of the conductors by "bundling" multiple 
conductors. That's when you see 2 or 4 wires as a group hanging from the 
same insulator. This reduces corona and also has the useful effect of 
reducing the inductance, as well.

They also use corona rings at junctions, etc.

In a substation, they use large diameter tubing as the bus conductors.


At 06:04 PM 9/9/2002 -0600, you wrote:
>Original poster: "Richard W. by way of Terry Fritz <twftesla-at-qwest-dot-net>" 
><potluck-at-xmission-dot-com>
>
>Hi list,
>Was wondering.
>Power transmission lines, before a substation, can carry from 100Kv to 
>more the
>600Kv. So why no corona? Seems we battle corona quite a bit at much lower
>voltages. <shrugs>
>
>Rick W.
>Salt Lake