(a) Draw and explain slip-torque characteristics of 3-phase induction motor.

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter12: Power System Controls
Section: Chapter Questions
Problem 12.4P
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(a) Draw and explain slip-torque characteristics of 3-phase induction motor.
(b) No load and blocked rotor test of a 440 V, three phase 55 HP, star connected induction motor gave the following results
No-load (line values)
: 440 V, 5 A , 230 W
Blocked rotor test (Line values) : 130 V, 15 A , 1800 W
Stator resistance per phase is 1.2 Q.
Calculate the parameters of exact equivalent circuit and draw the exact equivalent circuit referred to stator side.
Transcribed Image Text:(a) Draw and explain slip-torque characteristics of 3-phase induction motor. (b) No load and blocked rotor test of a 440 V, three phase 55 HP, star connected induction motor gave the following results No-load (line values) : 440 V, 5 A , 230 W Blocked rotor test (Line values) : 130 V, 15 A , 1800 W Stator resistance per phase is 1.2 Q. Calculate the parameters of exact equivalent circuit and draw the exact equivalent circuit referred to stator side.
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