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John
 
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wrote in message
oups.com...
Andrew Gabriel wrote:
writes:
Capitol writes:





OK, I'll rephrase the question: why can all gens not be synced by a
common time standard instead of by the neighbouring mains waveform?

Laws of physics - there are stupendous forces involved in trying to drag an
alternator out of synchronism once its locked in. I'd have to dig my old
student days books out of the loft to find the calcs but one of the examples
we studied on a 250MVA unit slipping by a factor of 0.1 astounded the whole
of our group. The synch restoring torque was massive