1997-12-31

The origins of 60-Hz as a power frequency

The global adoption of 50 Hz and 60 Hz power frequencies stems from decisions made by Westinghouse (Pittsburgh) and AEG (Berlin) engineers in 1891, which continue to impact electrical systems worldwide. The evolution of these frequency standards spans from early experimental phases through lighting systems development to power systems interconnection, shaping the electrical infrastructure across the USA, Europe, and Japan.

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