A 100 KVA, 2200 / 220 v, 50 cps transformer has the following constants: Rp = 0.42 Ω, Xp = 0.72 Ω, Rs = 0.0035 Ω and Xs = 0.070 Ω. Calculate the % regulation for the following cases a) At fp = 1 b) At fp = 0.8 behind c) At fp = 0.8 ahead

A 100 KVA, 2200 / 220 v, 50 cps transformer has the following constants: Rp = 0.42 Ω, Xp = 0.72 Ω, Rs = 0.0035 Ω and Xs = 0.070 Ω. Calculate the % regulation for the following cases a) At fp = 1 b) At fp = 0.8 behind c) At fp = 0.8 ahead

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter3: Magnetic Starters

Section: Chapter Questions

Problem 30SQ

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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.

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4. A 100 KVA, 2200 / 220 v, 50 cps transformer has the following constants: Rp = 0.42 Ω, Xp = 0.72 Ω, Rs = 0.0035 Ω and Xs = 0.070 Ω. Calculate the % regulation for the following cases

a) At fp = 1

b) At fp = 0.8 behind

c) At fp = 0.8 ahead

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