7 A 3-phase system has a single phase to earth fault (i.e. phase A is short circuit to earth while phase B and C are healthy). The equivalent impedances are Z4=j0.4pu. Z_=j0.3pu, Zo=j0.1pu. Calculate the per-unit phase Acurrent/A.홍-j4.05pu-j3.95pu-j3.85pu-j3.75pu○ -j3.65puCBA

here sigle line to ground fault with zero fault impedance fault current Ia calculated as-

A 3-phase system has a single phase to earth fault (i.e. phase A is short circuit to earth while phase B and C are healthy). The equivalent impedances are Z+=j0.4pu, Z.-j0.3pu, Zo-j0.1pu. Calculate the per-unit phase A current /A. с B A O-14.05pu O-13.95pu O-13.85pu O-j3.75pu O-13.65pu

A 3-phase system has a single phase to earth fault (i.e. phase A is short circuit to earth while phase B and C are healthy). The equivalent impedances are Z+=j0.4pu, Z.-j0.3pu, Zo-j0.1pu. Calculate the per-unit phase A current /A. с B A O-14.05pu O-13.95pu O-13.85pu O-j3.75pu O-13.65pu

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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Concept explainers

KVL and KCL

KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.

Sign Convention

Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.

Question

A 3-phase system has a single phase to earth fault (i.e. phase A is short circuit to earth while phase B and C are healthy). The equivalent impedances are Z4=j0.4pu. Z_=j0.3pu, Zo=j0.1pu. Calculate the per-unit phase Acurrent/A.
홍
-j4.05pu
-j3.95pu
-j3.85pu
-j3.75pu
○ -j3.65pu
C
B
A

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