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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 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.

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.

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 4 but use num 3 as reference 

4. In the previous problem, if there is an interconnector between A and C with an impedance of (2+j3) ohms, calculate the current in the interconnector, the new currents in section AB and the new station bus-bar voltages per phase at B and C.
Transcribed Image Text:4. In the previous problem, if there is an interconnector between A and C with an impedance of (2+j3) ohms, calculate the current in the interconnector, the new currents in section AB and the new station bus-bar voltages per phase at B and C.
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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