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 _________________ Topband Reflector Archives - http://www.contesting.com/_topband
