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Below are the single-phase equivalent circuit parameters of a 3-phase Star connected asynchronous motor. Total mechanical and friction losses will be neglected. Rated power 4kW Rated voltage 380 Vrms line (220Vms phase-neutral voltage) Rated frequency50Hz Number of poles 4 = 1.5 Q, Xi= 1.5jQ n= 0.550, x2= 1.25JQ Xm=14jQ This motor slippage is measured at 3% (s = 0.03) when loaded with a load below the rated point. (Voltage and frequency at rated value). For this operating condition, the rotor speed (or), the moment to be obtained from the shaft (Tm), the stator and rotor currents, (I1 and 12), the magnetizing current (Im), the input power to be drawn by the motor (PIN), the reactive power (QIN), the shaft. Find the output power (Pm), motor efficiency (n), stator and rotor losses and power factor (cosF) for the exact equivalent circuit. rpm TR Nm I = Arms I2 = Arms Im = Arms PN= QN= Pm= VAr % Stator losses W %3! Rotor losses W Power factor %3! I|||

Below are the single-phase equivalent circuit parameters of a 3-phase Star connected asynchronous motor. Total mechanical and friction losses will be neglected. Rated power 4kW Rated voltage 380 Vrms line (220Vms phase-neutral voltage) Rated frequency50Hz Number of poles 4 = 1.5 Q, Xi= 1.5jQ n= 0.550, x2= 1.25JQ Xm=14jQ This motor slippage is measured at 3% (s = 0.03) when loaded with a load below the rated point. (Voltage and frequency at rated value). For this operating condition, the rotor speed (or), the moment to be obtained from the shaft (Tm), the stator and rotor currents, (I1 and 12), the magnetizing current (Im), the input power to be drawn by the motor (PIN), the reactive power (QIN), the shaft. Find the output power (Pm), motor efficiency (n), stator and rotor losses and power factor (cosF) for the exact equivalent circuit. rpm TR Nm I = Arms I2 = Arms Im = Arms PN= QN= Pm= VAr % Stator losses W %3! Rotor losses W Power factor %3! I|||

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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Below are the single-phase equivalent circuit parameters of a 3-phase Star connected asynchronous motor. Total mechanical and friction losses will be neglected. Rated power 4kW Rated voltage 380 Vrms line (220Vms phase-neutral voltage) Rated frequency 50HZ Number of poles 4 n= 1.5 Q, X1 = 1.5j2 12= 0.552, X2 = 1.25jQ Xm=14jQ I= 00 This motor slippage is measured at 3% (s = 0.03) when loaded with a load below the rated point. (Voltage and frequency at rated value). For this operating condition, the rotor speed (or), the moment to be obtained from the shaft (Tm), the stator and rotor currents, (I1 and 12), the magnetizing current (Im), the input power to be drawn by the motor (PIN), the reactive power (QIN), the shaft. Find the output power (Pm), motor efficiency (n), stator and rotor losses and power factor (cosF) for the exact equivalent circuit. O, = грm TR = Nm I = Arms I2 = Arms Im = Arms QIN= Pm= VAr % Stator losses = W Rotor losses W Power factor
Transcribed Image Text:Below are the single-phase equivalent circuit parameters of a 3-phase Star connected asynchronous motor. Total mechanical and friction losses will be neglected. Rated power 4kW Rated voltage 380 Vrms line (220Vms phase-neutral voltage) Rated frequency 50HZ Number of poles 4 n= 1.5 Q, X1 = 1.5j2 12= 0.552, X2 = 1.25jQ Xm=14jQ I= 00 This motor slippage is measured at 3% (s = 0.03) when loaded with a load below the rated point. (Voltage and frequency at rated value). For this operating condition, the rotor speed (or), the moment to be obtained from the shaft (Tm), the stator and rotor currents, (I1 and 12), the magnetizing current (Im), the input power to be drawn by the motor (PIN), the reactive power (QIN), the shaft. Find the output power (Pm), motor efficiency (n), stator and rotor losses and power factor (cosF) for the exact equivalent circuit. O, = грm TR = Nm I = Arms I2 = Arms Im = Arms QIN= Pm= VAr % Stator losses = W Rotor losses W Power factor
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