Problem: A power system is connected in a ring system has three sections. Section A has a 10MVA, 10%X supplies Load A, Section B has a 20MVA, 15%X supplies Load B and Section C has a 20MVA, 15%X supplies Load C. Every section is separated with a reactor along its busbar having 10MVA 5% at section A and B and 8MVA 4%X at section B and section C. The base values given in percent reactances are the ratings of the individual pieces of equipment. If a three phase short circuit occurs at Load A. Determine the a.) fault current and the rupturing capacity of the breaker in KVA if the busbar voltage is 11KV. b.) The circuit breaker and fuse ratings to be installed at Load A.

Problem: A power system is connected in a ring system has three sections. Section A has a 10MVA, 10%X supplies Load A, Section B has a 20MVA, 15%X supplies Load B and Section C has a 20MVA, 15%X supplies Load C. Every section is separated with a reactor along its busbar having 10MVA 5% at section A and B and 8MVA 4%X at section B and section C. The base values given in percent reactances are the ratings of the individual pieces of equipment. If a three phase short circuit occurs at Load A. Determine the a.) fault current and the rupturing capacity of the breaker in KVA if the busbar voltage is 11KV. b.) The circuit breaker and fuse ratings to be installed at Load A.

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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