A Y-Y connected 4 MVA, 35 KV/10 KV power transformer will be protected by a Differential Protection System. The CT s that are available for use are given as 50/ 5, 100/5 A , 150/5 , 250/5 , 400/5 A. Select the proper CTs for the primary and secondary sides considering rated currents for the respective sides. The pick up current of the overcurrent relay is given as 3 A. Show that under normal conditions there will not be a faulty operation if the CTs are selected properly

A Y-Y connected 4 MVA, 35 KV/10 KV power transformer will be protected by a Differential Protection System. The CT s that are available for use are given as 50/ 5, 100/5 A , 150/5 , 250/5 , 400/5 A. Select the proper CTs for the primary and secondary sides considering rated currents for the respective sides. The pick up current of the overcurrent relay is given as 3 A. Show that under normal conditions there will not be a faulty operation if the CTs are selected properly

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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