A 22kV, 50 Hz overhead transmission line connects Ibra and Muscat. There are three units in a string of insulators. If the capacitance between each insulator pin and earth is 13% of self-capacitance of each insulator, Calculate: i. Distribution of voltage over 3 insulators ii. String efficiency iii. Draw a suitable figure for this problem and mark the self-capacitance, capacitance between pin and earth, voltages and currents. iv. Calculate the new string efficiency if the third insulator which is near the conductor is removed.
A 22kV, 50 Hz overhead transmission line connects Ibra and Muscat. There are three units in a string of insulators. If the capacitance between each insulator pin and earth is 13% of self-capacitance of each insulator, Calculate: i. Distribution of voltage over 3 insulators ii. String efficiency iii. Draw a suitable figure for this problem and mark the self-capacitance, capacitance between pin and earth, voltages and currents. iv. Calculate the new string efficiency if the third insulator which is near the conductor is removed.
Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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Transcribed Image Text:A 22kV, 50 Hz overhead transmission line connects Ibra and
Muscat. There are three units in a string of insulators. If the
capacitance between each insulator pin and earth is 13% of
self-capacitance of each insulator, Calculate: i. Distribution of
voltage over 3 insulators ii. String efficiency iii. Draw a suitable
figure for this problem and mark the self-capacitance,
capacitance between pin and earth, voltages and currents. iv.
Calculate the new string efficiency if the third insulator which is
near the conductor is removed.
h (United States)
Tim
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