A three-phase asynchronous motor has the following rated data: Voltage 230V, output power 10kW, efficiency 87%, cosp = 0.85 (ind.) And f = 50 Hz. a) How much current does the motor draw at full load? b) The motor is wound with 8 poles, the slowdown at idle is 1% and at full load 5%. Calculate the speed at idle and at full load. c) How big is the brand moment if we disregard friction and ventilation losses? d) The engine's maximum torque occurs at 600 rpm. Calculate the maximum torque. e) The voltage is reduced to 200V. How big is the starting torgue at this voltage?
A three-phase asynchronous motor has the following rated data: Voltage 230V, output power 10kW, efficiency 87%, cosp = 0.85 (ind.) And f = 50 Hz. a) How much current does the motor draw at full load? b) The motor is wound with 8 poles, the slowdown at idle is 1% and at full load 5%. Calculate the speed at idle and at full load. c) How big is the brand moment if we disregard friction and ventilation losses? d) The engine's maximum torque occurs at 600 rpm. Calculate the maximum torque. e) The voltage is reduced to 200V. How big is the starting torgue at this voltage?
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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