The efficiency of a 20 kVA 15.4 / 0.4 kV three-phase power transformer is 73% for a load with unity power factor at rated power. Relative short circuit voltage% Uk = 30.0 and relative no-load current% I0 = 30. Since transformer (star-delta) is connected; 1-) Draw the primary reduced equivalent circuit and find its parameters. 2-) What is the power value measured in the short circuit test of this transformer? 3-) What is the iron loss value of this transformer?
The efficiency of a 20 kVA 15.4 / 0.4 kV three-phase power transformer is 73% for a load with unity power factor at rated power. Relative short circuit voltage% Uk = 30.0 and relative no-load current% I0 = 30. Since transformer (star-delta) is connected; 1-) Draw the primary reduced equivalent circuit and find its parameters. 2-) What is the power value measured in the short circuit test of this transformer? 3-) What is the iron loss value of this transformer?
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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The efficiency of a 20 kVA 15.4 / 0.4 kV three-phase power transformer is 73% for a load with unity power factor at rated power. Relative short circuit voltage% Uk = 30.0 and relative no-load current% I0 = 30. Since transformer (star-delta) is connected;
1-) Draw the primary reduced equivalent circuit and find its parameters.
2-) What is the power value measured in the short circuit test of this transformer?
3-) What is the iron loss value of this transformer?
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