How is the rated current of three-phase AC motor calculated?
The rated current of the three-phase motor rated power = (W) / (1.732 * * * rated voltage power factor efficiency)
I=S/1.73UX0.8 is: apparent power divided by the square root of 3, 1.73, and then divided by the voltage X power factor 0.8
Rated current (1.732 In=Pn/ * Un * n * cos Phi ETA).Where Pn is the nominal rated power, rated voltage Un, COS with n rated power factor, rated efficiency.Note that the power refers to the power output shaft, Pn/ is the input electric power.
