An approximate per phase equivalent circuit of a 3-phase, 220-V, wye-

EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN:9781337516549
Author:Simmons
Publisher:Simmons
Chapter28: Overcurrent Protection–fuses And Circuit Breakers
Section: Chapter Questions
Problem 11R: State four possible combinations of service equipment that meet the requirements of 110.9 and 110.10...
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An approximate per phase equivalent circuit of a 3-phase, 220-V, wye-
connected, 6 pole, 60 Hz induction motor is shown in figure below for which R1 = 0.3 ohm; X1 = 0.4 ohm; R’2 = 0.4 ohm; X’2 = 0.6 ohm; Xm = 15 ohms. For the given numerical values calculate the total developed
(electromagnetic) torque in (kg-cm) .The motor speed is 1080 rpm.

X1
R'2
12
X'2
R1
Im
Xm
R'2/s (1-s)
V1
Transcribed Image Text:X1 R'2 12 X'2 R1 Im Xm R'2/s (1-s) V1
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