In a three phase overhead system, each line is suspended by a string of three insulator.The voltage across top unit and the middle unit are 7 kV and 10 kV respectively.Calcułate, a) Line voltage.b) String efficiency.

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In a three phase overhead system, each line is suspended by a string of three insulalor. The voltage across top unit and the middle unit are 7 kV and 10 kV respectively. Calculate, a) Line voltage. b) String efficiency.

In a three phase overhead system, each line is suspended by a string of three insulalor. The voltage across top unit and the middle unit are 7 kV and 10 kV respectively. Calculate, a) Line voltage. b) String efficiency.

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

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.5P: A 60-Hz, 765-kV, three-phase overhead transmission line has four ACSR 900 kcmil 54/3 conductors per...

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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

In a three phase overhead system, each line is suspended by a string of three insulator.
The voltage across top unit and the middle unit are 7 kV and 10 kV respectively.
Calcułate, a) Line voltage.
b) String efficiency.

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