In a 3-phase overhead system, each line is suspended by a string of 3 insulators. The voltage across the top unit (i.e. near the tower) and middle unit are 10 kV and 11 kV respectively. Calculate (f) the ratio of shunt capacitance to self capacitance of each insulator, (if) the string efficiency and (i) line voltage. [) 0-1 (ii) 86-76% (ii) 59 kV]

In a 3-phase overhead system, each line is suspended by a string of 3 insulators. The voltage across the top unit (i.e. near the tower) and middle unit are 10 kV and 11 kV respectively. Calculate (f) the ratio of shunt capacitance to self capacitance of each insulator, (if) the string efficiency and (i) line voltage. [) 0-1 (ii) 86-76% (ii) 59 kV]

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 3.33P: Consider the three single-phase two-winding transformers shown in Figure 3.37. The high-voltage...

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Single Phase AC Circuit

Alternating Current (AC) is a type of electric power in which the electric current changes, both in magnitude and direction, at regular intervals. This AC Circuits can deliver power in either a Single Phase system or a Three Phase system.

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In a 3-phase overhead system, each line is suspended by a string of 3 insulators. The voltage across the
top unit (i.e. near the tower) and middle unit are 10 kV and 11 kV respectively. Calculate (f) the ratio of
shunt capacitance to self capacitance of each insulator, (if) the string efficiency and (ii) line voltage.
[) 0•1 (ii) 86-76% (iii) 59 kV]

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