a. A fault occurs between bus 1 and bus 2 and resultant fault current is 5000 A. What is the fault current seen by zone 1, zone 2 and zone 3 relays at bus 1? b. A fault occurs at bus 4 and the resultant fault currents in line 1-2 and line 3-2 are I12 = 3000 A and I32 1200 A. What is the apparent impedance seen by the relay at bus 1? Would the relay at bus 1 trip in %3D zone 3? Bus 1 Bus 2 Bus 31 3.2+j32.00 3.2+j32.02 R11 R31 R33 R31 Bus 4 4.8-j48.02 R34 R42

a. A fault occurs between bus 1 and bus 2 and resultant fault current is 5000 A. What is the fault current seen by zone 1, zone 2 and zone 3 relays at bus 1? b. A fault occurs at bus 4 and the resultant fault currents in line 1-2 and line 3-2 are I12 = 3000 A and I32 1200 A. What is the apparent impedance seen by the relay at bus 1? Would the relay at bus 1 trip in %3D zone 3? Bus 1 Bus 2 Bus 31 3.2+j32.00 3.2+j32.02 R11 R31 R33 R31 Bus 4 4.8-j48.02 R34 R42

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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