4.22. What voltage should be applied to a 5-hp, 220-V, 60-Hz motor, if operated at 180 Hz, in order to maintain the normal degree of iron saturation? Approximately, what would be the rated horsepower at 180 Hz?
Added by Robert J.
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The synchronous speed (Ns) can be calculated using the formula: Ns = (120 * f) / P Where: Ns = synchronous speed in RPM f = frequency in Hz P = number of poles Show more…
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