A 220-volt, single-phase induction motor draws 15 amps of current when operated on a 60-Hz circuit. The rated power factor is 0.80 lagging. Determine the size of the capacitor required to increase the power factor to 0.95 lag, given: PMOTOR = 2.640 kW @ pf = 0.8 lagging) QMOTOR= 1.980 KVAR (@ pf = 0.8 lagging) S2 = 2.779 kVA (@ pf = 0.8 lagging) QNET= 867.96 VAR (@ pf = 0.95 lagging) 24.44 µF 43.52 µF 59.8 µF O 55.76 µF

A 220-volt, single-phase induction motor draws 15 amps of current when operated on a 60-Hz circuit. The rated power factor is 0.80 lagging. Determine the size of the capacitor required to increase the power factor to 0.95 lag, given: PMOTOR = 2.640 kW @ pf = 0.8 lagging) QMOTOR= 1.980 KVAR (@ pf = 0.8 lagging) S2 = 2.779 kVA (@ pf = 0.8 lagging) QNET= 867.96 VAR (@ pf = 0.95 lagging) 24.44 µF 43.52 µF 59.8 µF O 55.76 µF

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter39: Synchronous Motor Operation

Section: Chapter Questions

Problem 14SQ: Induction motors and welding transformers require magnetizing current, which causes a. lagging power...

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