1. A 10 MVA, 11 kV, 3-phase star-connected alternator is protected by the Merz-Price balance-currentsystem,which operates when the out-of-balance current exceeds 20% of full-lond current Delerminewhat portion of the alternating winding is unprotected if the star point is earthed through a resistance of952. The reactance of the alternator is 2 2.[14-88%]

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1. A 10 MVA, 11 kV, 3-phase star-connected alternator is protected by the Merz-Price balance-current system, which operates when the out-of-balance current exceeds 20% of full-lond current Defermine what portion of the alternating winding is unprotected if the star point is earthed through a resistance of 952. The reactance of the alternator is 20. [1488%]

1. A 10 MVA, 11 kV, 3-phase star-connected alternator is protected by the Merz-Price balance-current system, which operates when the out-of-balance current exceeds 20% of full-lond current Defermine what portion of the alternating winding is unprotected if the star point is earthed through a resistance of 952. The reactance of the alternator is 20. [1488%]

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter31: Three-phase Alternators

Section: Chapter Questions

Problem 1RQ: What conditions must be met before two alternators can be paralleled together?

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