An overhead transmission line conductor consists of hard drawn copper conductor of diameter 15 mm, having a dead weight of 1120 kg/km and spanning 150 metres. The supporting structures are at equal levels. The conductor has an ultimate tensile stress of 43.2 kg/mm and allowable tension is not to exceed 1/4th of ultimate strength. Find the vertical component of the sag under the following conditions: still air, (i) (ii) an ice coating of 12 mm. Assume density of ice as 0.925 g/cm.

An overhead transmission line conductor consists of hard drawn copper conductor of diameter 15 mm, having a dead weight of 1120 kg/km and spanning 150 metres. The supporting structures are at equal levels. The conductor has an ultimate tensile stress of 43.2 kg/mm and allowable tension is not to exceed 1/4th of ultimate strength. Find the vertical component of the sag under the following conditions: still air, (i) (ii) an ice coating of 12 mm. Assume density of ice as 0.925 g/cm.

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 4.3P: A transmission-line cable with a length of 2 km consists of 19 strands of identical copper...

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