Answered: A 50 kVA, 1100/230 V, distribution…

A 50 kVA, 1100/230 V, distribution transformer has iron loss of 1 kW and full load copper loss of 2 kW. If its loading during the day is as follows then find all day efficiency.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter7: Alternating Current, Power Distribution, And Voltage Systems

Section: Chapter Questions

Problem 23RQ

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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 50 kVA, 1100/230 V, distribution transformer has iron loss of 1 kW
www
and full load copper loss of 2 kW. If its loading during the day is as
follows then find all day efficiency.
KVA
40
30
10
0
PF
0.9
0.8
0.85
Hour |
4
8
6
6
I

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