Question

Three-phase induction motor
The three-phase induction motor nameplate gives the following information: 100 HP,
6 poles, 600 V, 60 Hz, PF =0.87. Rated motor slip s=0.0275 and rated motor current is 91.7 A. Measured at rated speed friction and ventilation losses are 1100 W. Measured between two motor terminals resistance is 0.305 Ω.
f) For a load such where the motor rotates at the speed of 1180 r / min, determine shaft torque and calculate the mechanical power in HP, supplied to this load (4 points).

g) Determine the required supply voltage, the rotational speed and the mechanical power supplied to the load (HP) if the motor is fed at 30 Hz frequency so that it develops the torque calculated in f (5 points).

Answer 1

ivon data 1: 가구 A 60 100x45.5 구4550X60 603.306 N Mechnical fINUu 745564 }100 Pmqh = 75650 walt Met

in H p Mech in al 745.5 MtrhanicJ rau p-75650 ʼ, 101.5 HP 6001030 60 vwlg 300 NDUW T/ Mechanic Jeu s 15504 545