Re: Why not 400 Hz AC?


"Eric R Snow" <etpm@xxxxxxxxxxx> wrote in message
news:v7ac339qpl542ou41070vhk98no0rsb62k@xxxxxxxxxx

Reading the post about square wave AC I see that higher frequency AC
makes for noisy motors and transformers. Is this the only reason not
to use higher frequency power?

The losses are higher. 16? Hz power was used for some European rail systems.

The use of lower frequencies also provided the advantage of lower impedance
losses, which are proportional to frequency. It was this argument that
resulted in the use of 25 Hz in the initial generation installations at
Niagara Falls, in anticipation of long-distance transmission to Toronto.

http://en.wikipedia.org/wiki/Alternating_current



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