On 1/29/2014 7:40 AM, Bill Wichers wrote:
That's not entirely correct... Triplen harmonics are created by non-linear loads, but the
voltage developed on the neutral as a result of them is a result of voltage drop between
the source of the "problem" and the return which will be one or more utility
transformers. The farther you are from the transformer the worse the issue will be
(higher voltage developed). Triplen harmonics primarily result in additional heating in
the neutral and transformer due to higher than normal currents (since they don't cancel).
And buzz on both neutral and ground (they add on the ground for the same
reason the add on the neutral.
Triplen harmonics are also becoming less of an issue as many electronic loads
now incorporate power factor correction.
Interesting. Virtually all electronic equipment are "non-linear" loads
-- they are the power supplies in that equipment, which virtually all
include a rectifier and capacitor-input filter.
73, Jim K9YC
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