> I found a few white papers on how the Polyphaser, ICE and Delta lightning
> supressors work and posted about it:
> http://lists.contesting.com/archives//html/Towertalk/2006-03/msg00548.html .
>Gene Smar AD3F
Those ICE articles on how their units work seem to have some
misinformation. When lambasting the competition they make this statement:
"The use of a gas discharge unit as a sole-source mechanism for
neutralizing lightning currents delivered by heavy coaxial line
conductors is controversial. Gas units have only a small dissipative
power rating, seldom exceeding 1 watt. While the devices can handle
large jolts of thousands of amperes of current, they can perform that
service only if the entire impact event lasts only a few microseconds.
Lightning currents, especially slowed down by time constants due to the
inductance of transmission lines are much slower to begin, endure, and
end. The result is rupture and failure of gas discharge units, requiring
frequent replacement and down time."
On the Polyphaser site, looking up the IS-B50HN-CO suppressor that is
popular, and going to product specifications
we see that the current rating is for 50,000 amps for the typical
lightning waveform, 8/20 microseconds.
There are other examples of similar nonsense in this same ICE article. I
also find this same type stuff in other articles they have written. I
would say that ICE needs to clean up their act.
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