380v vs 240v power

James Knott james.knott-bJEeYj9oJeDQT0dZR+AlfA at public.gmane.org
Tue Apr 18 10:13:04 UTC 2006


phiscock-g851W1bGYuGnS0EtXVNi6w at public.gmane.org wrote:
>> Sorry about not being clearer.  In single phase 60 Hz power, there are
>> 120 power peaks per second or 2 per cycle, when the voltage and current
>> are maximum (assuming non-reactive load).  With 3 phase, the power is
>> constant throughout the cycle, with no peaks.
> 
> OK, I get it. Also, as I recall, a three-phase induction motor has better
> starting torque than a two-phase motor.

Curious.  I see you're in EE at Ryerson, which is where I learned most
of what I know about 3 phase power, in the AC Circuits course.  However,
it's been 20 years since I looked at that stuff.

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