A single-line diagram of a three-phase balanced system is given below. A bolted threephase short circuit occurs at point P, when the operating voltage was 21 kV there. Calculate the rated interrupting current rating of circuit breaker A, D and E, both in per unit and Ampere value

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...
icon
Related questions
Question

A single-line diagram of a three-phase balanced system is given below. A bolted threephase short circuit occurs at point P, when the operating voltage was 21 kV there. Calculate the rated interrupting current rating of circuit breaker A, D and E, both in per unit and Ampere value.

 

Answer follow image.

A single-line diagram of a three-phase balanced system is given below. A bolted three-
phase short circuit occurs at point P, when the operating voltage was 21 kV there. Calculate
the rated interrupting current rating of circuit breaker A, D and E, both in per unit and
Ampere value.
ic 10% D
8000KVA
12%
(MI)
9KV
22/11 KV
22,000 KVA
A
20%.
Gen
11/22 KX
6000KVA
Mz
It
22/7.33K
11 KV
6KY
15%
22,000 KVA
22,000 KVA
15%
22, 000 KVA
14%
All tue given impedances are su btranslent valuer7
Transcribed Image Text:A single-line diagram of a three-phase balanced system is given below. A bolted three- phase short circuit occurs at point P, when the operating voltage was 21 kV there. Calculate the rated interrupting current rating of circuit breaker A, D and E, both in per unit and Ampere value. ic 10% D 8000KVA 12% (MI) 9KV 22/11 KV 22,000 KVA A 20%. Gen 11/22 KX 6000KVA Mz It 22/7.33K 11 KV 6KY 15% 22,000 KVA 22,000 KVA 15% 22, 000 KVA 14% All tue given impedances are su btranslent valuer7
Expert Solution
steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Knowledge Booster
Analysis of Single Phase and Three Phase System
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,