A single-phase transformer 11000/420 V, 50 kVA, 50 Hz has resistance and leakage reactance as follows: Primary winding: resistance, R1= 6 W and reactance, X1 = 12 0 Secondary winding: resistance, R2 = 0.01 Q and reactance, X2 = 0.012 0 The core loss resistance, Rc and the magnetizing reactance, Xm at primary are 5500 Q and 3300 0 respectively. A load of 24 kW with power factor 0.9 lagging and voltage 420 V connected at secondary side. (i). Find the equivalent circuit of transformer referred to high voltage side (Primary side). (ii). Determine the source voltage and current at the primary side.

A single-phase transformer 11000/420 V, 50 kVA, 50 Hz has resistance and leakage reactance as follows: Primary winding: resistance, R1= 6 W and reactance, X1 = 12 0 Secondary winding: resistance, R2 = 0.01 Q and reactance, X2 = 0.012 0 The core loss resistance, Rc and the magnetizing reactance, Xm at primary are 5500 Q and 3300 0 respectively. A load of 24 kW with power factor 0.9 lagging and voltage 420 V connected at secondary side. (i). Find the equivalent circuit of transformer referred to high voltage side (Primary side). (ii). Determine the source voltage and current at the primary side.

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

Three-Phase Transformers

Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.

Transformer

Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.

Question

A single-phase transformer 11000/420 V, 50 kVA, 50 Hz has resistance and
leakage reactance as follows:
Primary winding: resistance, R1= 6 W and reactance, X1 = 12 0
Secondary winding: resistance, R2 = 0.01 Q and reactance, X2 = 0.012 0
The core loss resistance, Rc and the magnetizing reactance, Xm at primary are
5500 Q and 3300 0 respectively. A load of 24 kW with power factor 0.9 lagging
and voltage 420 V connected at secondary side.
(i). Find the equivalent circuit of transformer referred to high voltage side
(Primary side).
(ii). Determine the source voltage and current at the primary side.

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A single-phase transformer 11000/420 V, 50 kVA, 50 Hz has resistance and leakage reactance as follows: Primary winding: resistance, R1 = 6 N and reactance, X1 = 12 Q Secondary winding: resistance, R2 = 0.01 Q and reactance, X2 = 0.012 2 The core loss resistance, Re and the magnetizing reactance, Xm at primary are 5500 2 and 3300 Q respectively. A load of 24 kW with power factor 0.9 lagging and voltage 420 V connected at secondary side. (i) Find the equivalent circuit of transformer referred to high voltage side (primary side). (ii) Determine the source voltage and current at the primary side.
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