A three phase distribution board of installed power 50KVA is supplied at 220/380V with a demand factor of 70%. Calculate the current IB and the minimum appropriate circuit breaker (CB). Select one: IB=53.2A, CB = 80A IB=76A, CB = 100A IB-53.2A. CB = 63A IB-48.2A. CB = 63A

A three phase distribution board of installed power 50KVA is supplied at 220/380V with a demand factor of 70%. Calculate the current IB and the minimum appropriate circuit breaker (CB). Select one: IB=53.2A, CB = 80A IB=76A, CB = 100A IB-53.2A. CB = 63A IB-48.2A. CB = 63A

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.45P: Two balanced Y-connected loads, one drawing 10 kW at 0.8 power factor lagging and the other IS kW at...

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Question

A three phase distribution board of installed power 50KVA is supplied at 220/380V with a demand factor of 70%.
Calculate the current IB and the minimum appropriate circuit breaker (CB).
Select one:
IB=53.2A, CB = 80A
IB=76A, CB = 100A
IB=53.2A. CB = 63A
IB=48.2A, CB = 63A

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