A balanced three-phase source with grounded neutral has line-to-neutral voltages of 230 volts with an-bn-cn sequence. This source has an internal series impedance of 0.15+j2.0 ohms per phase. It supplies power to an unbalanced three-phase wye, neutral grounded, load with impedances: Zan = 15+j20; Zbn = 20-j16; Zcn = 26+j10 ohms. If there is a double-line-to-ground fault at lines b and c load-side, what is the magnitude of the fault current injected to the ground in amperes?

A balanced three-phase source with grounded neutral has line-to-neutral voltages of 230 volts with an-bn-cn sequence. This source has an internal series impedance of 0.15+j2.0 ohms per phase. It supplies power to an unbalanced three-phase wye, neutral grounded, load with impedances: Zan = 15+j20; Zbn = 20-j16; Zcn = 26+j10 ohms. If there is a double-line-to-ground fault at lines b and c load-side, what is the magnitude of the fault current injected to the ground in amperes?

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 2.52P: A balanced three-phase load is connected to a 4.16-kV, three-phase, fourwire, grounded-wye dedicated...

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