A three-phase line has an impedance of 2+j4 N. The line feeds two balanced three-phase loads that are connected in parallel. The first load is Y-connected and has an impedance of 30+j40 Q per phase. The second load is A-connected and has an impedance of 60-j45 Q. The line is energized at the sending end from a three-phase balanced supply of line voltage 207.85 V. Taking the phase voltage Va as reference, determine: a) The current, real power, and reactive power drawn from the supply. b) The line voltage at the combined loads. c) The current per phase in each load. d) The total real and reactive powers in each load and the line.

A three-phase line has an impedance of 2+j4 N. The line feeds two balanced three-phase loads that are connected in parallel. The first load is Y-connected and has an impedance of 30+j40 Q per phase. The second load is A-connected and has an impedance of 60-j45 Q. The line is energized at the sending end from a three-phase balanced supply of line voltage 207.85 V. Taking the phase voltage Va as reference, determine: a) The current, real power, and reactive power drawn from the supply. b) The line voltage at the combined loads. c) The current per phase in each load. d) The total real and reactive powers in each load and the line.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.43P: A three-phase line, which has an impedance of (2+j4) per phase, feeds two balanced three-phase loads...

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