A 120 KVA, 6600/250 V transformer gave the following results: OC test: 6600V, 7 A. 900 W; SC test: 16 A, 280 V, 3500 W. What is the percent regulation and the applied voltage using equivalent circuit(approximate) when the transformer delivers 455 A at 0.87 lagging pf at rated terminal voltage?

A 120 KVA, 6600/250 V transformer gave the following results: OC test: 6600V, 7 A. 900 W; SC test: 16 A, 280 V, 3500 W. What is the percent regulation and the applied voltage using equivalent circuit(approximate) when the transformer delivers 455 A at 0.87 lagging pf at rated terminal voltage?

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 3.16P: A single-phase, 50-kVA,2400/240-V,60-Hz distribution transformer has the following parameters:...

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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 120 KVA, 6600/250 V transformer gave the following results: OC test: 6600V, 7
A, 900 W; SC test: 16 A, 280 V, 3500 W. What is the percent regulation and the
applied voltage using equivalent circuit(approximate) when the transformer
delivers 455 A at 0.87 lagging pf at rated terminal voltage?
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