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Q18. A 3-phase ring main ABCD fed at point A with 415V supplies balanced loads as shown in Figure B3. The loads currents being referred to the supply voltage at point A. The impedance of the various sections is given in Table C2. Calculate: i. voltage drop in each section point of minimum potential currents in each section ii. ii. Table C2 50A Unity pf ZAB = ( 2 +j0 ) N ZBC = ( 2.2 +j0)N ZcD= ( 1.8 +j0 ) N ZDA = ( 2 +j0 ) N 415V C 120A 70A Unity pf Unity pf Figure B3

Q18. A 3-phase ring main ABCD fed at point A with 415V supplies balanced loads as shown in Figure B3. The loads currents being referred to the supply voltage at point A. The impedance of the various sections is given in Table C2. Calculate: i. voltage drop in each section point of minimum potential currents in each section ii. ii. Table C2 50A Unity pf ZAB = ( 2 +j0 ) N ZBC = ( 2.2 +j0)N ZcD= ( 1.8 +j0 ) N ZDA = ( 2 +j0 ) N 415V C 120A 70A Unity pf Unity pf Figure B3

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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Q18. A 3-phase ring main ABCD fed at point A with 415V supplies balanced loads as shown in Figure B3. The loads currents being referred to the supply voltage at point A. The impedance of the various sections is given in Table C2. Calculate: i. voltage drop in each section point of minimum potential currents in each section ii. ii. Table C2 50A Unity pf ZAB = ( 2 +j0 ) N ZBC = ( 2.2 +j0)N ZcD= ( 1.8 +j0 ) N ZDA = ( 2 +j0 ) N 415V C 120A 70A Unity pf Unity pf Figure B3
Transcribed Image Text:Q18. A 3-phase ring main ABCD fed at point A with 415V supplies balanced loads as shown in Figure B3. The loads currents being referred to the supply voltage at point A. The impedance of the various sections is given in Table C2. Calculate: i. voltage drop in each section point of minimum potential currents in each section ii. ii. Table C2 50A Unity pf ZAB = ( 2 +j0 ) N ZBC = ( 2.2 +j0)N ZcD= ( 1.8 +j0 ) N ZDA = ( 2 +j0 ) N 415V C 120A 70A Unity pf Unity pf Figure B3
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