A ∆- connected, 25kW, 230V, three phase, six pole, 50Hz squirrel cage induction motorhas the following equivalent circuit parameters per phase Y.R1 = 0. 045Ω, X1 = 0. 29Ω,R2′ = 0. 054Ω,X2′ = 0. 28Ω,Xm = 9. 6Ω (i) Calculate the starting current and torque for this motor connected directly to a 230V source. (ii) With the motor Y-connected and running directly off a 230 V source, calculate the starting current and torque.

A ∆- connected, 25kW, 230V, three phase, six pole, 50Hz squirrel cage induction motorhas the following equivalent circuit parameters per phase Y.R1 = 0. 045Ω, X1 = 0. 29Ω,R2′ = 0. 054Ω,X2′ = 0. 28Ω,Xm = 9. 6Ω (i) Calculate the starting current and torque for this motor connected directly to a 230V source. (ii) With the motor Y-connected and running directly off a 230 V source, calculate the starting current and torque.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter8: Basic Electric Motors

Section: Chapter Questions

Problem 13RQ: Which of the following correctly lists the motor’s starting torque from lowest to highest? capacitor...

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