(Q.3) The percentage differential relay shown in figure below is used for the protection of an alternator winding. The relay has minimum pickup current of 0.2 A. A high resistance ground fault occurs near the grounded neutral end of the alternator winding with the current distribution as given in the figure. The CT ratio is 200/5. Determine the minimum value of the slope to operate the relay. 380 + j0 A 340+jo A Fáult Activate Windows Go to Settings to activate W 158 0996 - A

(Q.3) The percentage differential relay shown in figure below is used for the protection of an alternator winding. The relay has minimum pickup current of 0.2 A. A high resistance ground fault occurs near the grounded neutral end of the alternator winding with the current distribution as given in the figure. The CT ratio is 200/5. Determine the minimum value of the slope to operate the relay. 380 + j0 A 340+jo A Fáult Activate Windows Go to Settings to activate W 158 0996 - A

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

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.4P

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