Given is a 50 kVA, single phase transformer. The transformer is fed by a single phase ungrounded primary voltage of 12,500 volts. The secondary of the transformer is 240 volts. The transformer is feeding loads L1, L2, and L3. There is a permanent ground connection between loads L2 and L3. There is no other ground on the system. Ammeters A-3 and A-4 read 25A each. What percent is the transformer load? What will each of the ammeters read? With 25 amp flowing in ammeter A-4, the current that will be flowing in the ground ammeter A-6 will be?

Given is a 50 kVA, single phase transformer. The transformer is fed by a single phase ungrounded primary voltage of 12,500 volts. The secondary of the transformer is 240 volts. The transformer is feeding loads L1, L2, and L3. There is a permanent ground connection between loads L2 and L3. There is no other ground on the system. Ammeters A-3 and A-4 read 25A each. What percent is the transformer load? What will each of the ammeters read? With 25 amp flowing in ammeter A-4, the current that will be flowing in the ground ammeter A-6 will be?

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.10P: A single-phase step-down transformer is rated 13MVA,66kV/11.5kV. With the 11.5 kV winding...

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