25 Hz power |
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jsw (jsw@ivgate.omahug.org) Wed, 8 Mar 2006 12:45:38 CST
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>> We were still operating units 25 hz 24, 25 and 26 and a reversable >> frequency changer.
> Who bought this 25Hz power?
IIRC, and somebody please correct me if I'm wrong, 25Hz power was used
In NYC up into the 70's at least, power for two of the subway
As another trivia point, commercial DC power was still available to |
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