TELECOM Digest OnLine - Sorted: Re: 25 Hz Power

Thomas D. Horne, Electrician (hornetd@mindspring.com)
2006年3月10日 17:05:20 GMT

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Boston Edison used to provide 600 volt DC service for the operation of
elevators and cranes. I don't know if they still do.

Tom Horne

"This alternating current stuff is just a fad. It is much too dangerous
for general use." Thomas Alva Edison

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