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Example 10 A three-phase, 480 V, 50 Hz, four-pole induction motor has the following single-phase equivalent circuit parameters: R, -0.22Ω , R=0.25 ΩΧ-1.055Ω Χ-1.055 Ω, Χ- 44Ω %3D %3D The induction motor is connected to a three-phase, 480 V, 50 Hz supply. - Determine the starting torque. - Determine the breakdown torque and the speed at which it occurs. The motor drives a load for which T = 2.0N.m. Determine the speed at which the motor will drive the load. Assume that near the synchronous speed the motor torque is proportional to slip. Neglect rotational losses.

Example 10 A three-phase, 480 V, 50 Hz, four-pole induction motor has the following single-phase equivalent circuit parameters: R, -0.22Ω , R=0.25 ΩΧ-1.055Ω Χ-1.055 Ω, Χ- 44Ω %3D %3D The induction motor is connected to a three-phase, 480 V, 50 Hz supply. - Determine the starting torque. - Determine the breakdown torque and the speed at which it occurs. The motor drives a load for which T = 2.0N.m. Determine the speed at which the motor will drive the load. Assume that near the synchronous speed the motor torque is proportional to slip. Neglect rotational losses.

Introductory Circuit Analysis (13th Edition)
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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Example 10 A three-phase, 480 V, 50 Hz, four-pole induction motor has the following single-phase equivalent circuit parameters: R, = 0.222, R = 0.25 NX : 1.055 Ω, Χ1.055 Ω, Χ - 44Ω %3| || The induction motor is connected to a three-phase, 480 V, 50 Hz supply. Determine the starting torque. - Determine the breakdown torque and the speed at whie it occurs. 2.0N.m. Determine the speed at The motor drives a load for which T, which the motor will drive the load. Assume that near the synchronous speed the motor torque is proportional to slip. Neglect rotational losses.
Transcribed Image Text:Example 10 A three-phase, 480 V, 50 Hz, four-pole induction motor has the following single-phase equivalent circuit parameters: R, = 0.222, R = 0.25 NX : 1.055 Ω, Χ1.055 Ω, Χ - 44Ω %3| || The induction motor is connected to a three-phase, 480 V, 50 Hz supply. Determine the starting torque. - Determine the breakdown torque and the speed at whie it occurs. 2.0N.m. Determine the speed at The motor drives a load for which T, which the motor will drive the load. Assume that near the synchronous speed the motor torque is proportional to slip. Neglect rotational losses.
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