A single phase transformer is rated at 136 kVA,2,424 V / 206 V, 60 Hz. The equivalent circuitparameters (see figure) are R1=0.25 ohms, X1=0.44ohms, R2=4 milli-ohms, X2-4 milli-ohms, the coreloss resistor Re=13 k-ohms, magnetizing inductanceXm=2.08 k-ohms.Using the circuit referred to the primary (HV side),Find the efficiency when supplying rated load at PF=0.6 lagging.Input your answer in %R2a :1E,S EV2VIReXm

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A single phase transformer is rat 2,424 V / 206 V. 60 Hz The eau

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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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

A single phase transformer is rated at 136 kVA,
2,424 V / 206 V, 60 Hz. The equivalent circuit
parameters (see figure) are R1=0.25 ohms, X1=0.44
ohms, R2=4 milli-ohms, X2-4 milli-ohms, the core
loss resistor Re=13 k-ohms, magnetizing inductance
Xm=2.08 k-ohms.
Using the circuit referred to the primary (HV side),
Find the efficiency when supplying rated load at PF
=0.6 lagging.
Input your answer in %
R2
a :1
E,S E
V2
VI
Re
Xm

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