Q4(b) A 200-MVA 15/200-kV single-phase power transformer has a per-unit resistance of 1.2 percent and a per unit reactancé of 5 percent. The magnetizing impedance is j80 per unit. Find the equivalent circuit referred to the low-voltage side of this transformer and half load primary and secondary currents.

Q4(b) A 200-MVA 15/200-kV single-phase power transformer has a per-unit resistance of 1.2 percent and a per unit reactancé of 5 percent. The magnetizing impedance is j80 per unit. Find the equivalent circuit referred to the low-voltage side of this transformer and half load primary and secondary currents.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Concept explainers

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.

Question

Q4(b) A 200-MVA 15/200-kV single-phase power transformer has a per-unit
resistance of 1.2 percent and a per unit reactance of 5 percent. The magnetizing
impedance is j80 per unit. Find the equivalent circuit referred to the low-voltage
side of this transformer and half load primary and secondary currents.

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