A5000-kVA, 13.8/230-kV, single-phase power transformer has a per-unit resistance of 1 percentand a per-unit reactance of 5 percent (data taken from the transformer's nameplate). The open-circuit test performed on the low-voltage side of the transformer yielded the following data:Voc=13.8kVloc=21.1APoc-90.8kW(a) Find the equivalent circuit referred to the low-voltage side of this transformer.(b) If the voltage on the secondary side is 13.8kV and the power supplied is 4000kW at 0.8 PFlagging, find the voltage regulation of the transformer. Find its efficiency.

Given: Current is 5000 kVA Voltage is 13.8/230-kV

A5000-KVA, 13.8/230-kV, single-phase power transformer has a per-unit resistance of 1 percen and a per-unit reactance of 5 percent (data taken from the transformer's nameplate). The open- circuit test performed on the low-voltage side of the transformer yielded the following data: Voc=13.8kV Poc-90.8kW (a) Find the equivalent circuit referred to the low-voltage side of this transformer. (b) If the voltage on the secondary side is 13.8kV and the power supplied is 4000kW at 0.8 PF lagging, find the voltage regulation of the transformer. Find its efficiency. loc=21.1A

A5000-KVA, 13.8/230-kV, single-phase power transformer has a per-unit resistance of 1 percen and a per-unit reactance of 5 percent (data taken from the transformer's nameplate). The open- circuit test performed on the low-voltage side of the transformer yielded the following data: Voc=13.8kV Poc-90.8kW (a) Find the equivalent circuit referred to the low-voltage side of this transformer. (b) If the voltage on the secondary side is 13.8kV and the power supplied is 4000kW at 0.8 PF lagging, find the voltage regulation of the transformer. Find its efficiency. loc=21.1A

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 3.16P: A single-phase, 50-kVA,2400/240-V,60-Hz distribution transformer has the following parameters:...

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