A 2200 V, 2600 kW, 735 rpm, 50 Hz, 8 pole, 3-phase squirrel-cage induction motor has following parameters referred

A 2200 V, 2600 kW, 735 rpm, 50 Hz, 8 pole, 3-phase squirrel-cage induction motor has following parameters referred to the stator: R, = 0.075 2, R = 0.12, X, = 0.45 2, X = 0.55 12. Stator winding is delta connected and consists of two sections connected in parallel.
(1) Calculate starting torque and maximum torque as a ratio of rated torque, If the motor is Started by star-dalta switching. What is the maximum value of line current during starting?
(ii) Calculate transformation ratio of an auto-transformer so as to limit the maximum starting current to twice the rated value. What is the value of starting torque?


Buy plagiarism free, original and professional custom paper online now at a cheaper price. Submit your order proudly with us



Essay Hope