4-18- A 15-hp, 220-V, three-phase, 60-Hz, 6-pole, Y-connected induction motor has the following parameters per phase: ri = 0.128 Q ŕ2 = 0.0935 Q Xi + X'2= 0.496 Q re = 183 2 X, =8 N %3D the rotational losses are equal to the stator hysteresis and eddy- current losses For a slip of 3%, find: (a) The line current and power factor. (b) The horsepower output (c) The starting torque.
4-18- A 15-hp, 220-V, three-phase, 60-Hz, 6-pole, Y-connected induction motor has the following parameters per phase: ri = 0.128 Q ŕ2 = 0.0935 Q Xi + X'2= 0.496 Q re = 183 2 X, =8 N %3D the rotational losses are equal to the stator hysteresis and eddy- current losses For a slip of 3%, find: (a) The line current and power factor. (b) The horsepower output (c) The starting torque.
Understanding Motor Controls
4th Edition
ISBN:9781337798686
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter31: Wound Rotor Motors
Section: Chapter Questions
Problem 10RQ
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