What is the full load current of a 50 HP, 50Hz, 0.85 pf induction motor when the line voltage is 415 V

What is the full load current of a 50 HP, 50Hz, 0.85 pf induction motor when the line voltage is 415 V

Solution:

Here,

P = 50HP = 50*746 = 37300 Watt

Power Factor, cos θ = 0.85

Line Voltage, V_L = 415

P = √3 V_L I_L cos θ

 I_L = P / ( √3 V_L cos θ ) = 37300/ (√3 *415*0.85) = 61.04A (Ans)

EEE Job Math-4

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