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3. A 3-phase ring distributor ABCDA, fed at A at 11 kV supplies balanced loads of 30 A at 0.8 pf lagging at B, 50 A at 0.707 pf lagging at C, and 40 A at 0.8 pf lagging at D. The load currents are referred to the supply voltage at A. The impedances per phase of the various

3. A 3-phase ring distributor ABCDA, fed at A at 11 kV supplies balanced loads of 30 A at 0.8 pf lagging at B, 50 A at 0.707 pf lagging at C, and 40 A at 0.8 pf lagging at D. The load currents are referred to the supply voltage at A. The impedances per phase of the various

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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answer num 5 but use num 3 as reference

5. In problem # 3, if there will be an interconnector between A and C, what must be its impedance (magnitude and angle) so that the new station bus-bar voltage at C will be 6212.805/-0.568° V?
Transcribed Image Text:5. In problem # 3, if there will be an interconnector between A and C, what must be its impedance (magnitude and angle) so that the new station bus-bar voltage at C will be 6212.805/-0.568° V?
3. A 3-phase ring distributor ABCDA, fed at A at 11 kV supplies balanced loads of 30 A at 0.8 pf lagging at B, 50 A at 0.707 pf lagging at C, and 40 A at 0.8 pf lagging at D. The load currents are referred to the supply voltage at A. The impedances per phase of the various sections are: Section AB = (3+j4) ohms Section BC = (1+j1) ohms Section CD = (2+j3) ohms Section DA = (1+j2) ohms Calculate the currents in sections: AB and BC, and station bus-bar voltages per phase at B, and C.
Transcribed Image Text:3. A 3-phase ring distributor ABCDA, fed at A at 11 kV supplies balanced loads of 30 A at 0.8 pf lagging at B, 50 A at 0.707 pf lagging at C, and 40 A at 0.8 pf lagging at D. The load currents are referred to the supply voltage at A. The impedances per phase of the various sections are: Section AB = (3+j4) ohms Section BC = (1+j1) ohms Section CD = (2+j3) ohms Section DA = (1+j2) ohms Calculate the currents in sections: AB and BC, and station bus-bar voltages per phase at B, and C.
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