Mechanical Design of Lines
CONTENTS > Sag in Transmissison Line : > Span between Supports : > Tension in Conductor : > Formula for sag calculation : > Factors affecting sag : > Effect of ice loading on sag : > Effect of wind pressure on sag : What is Sag in Transmission Line ? Sag in conductor : When the conductors are supported at the towers or poles, they are pulled and connected between supports but soon conductors will sag or dip under its own weight. Maximum sag is essential in determining the ground clearance of the conductor. The sag should be minimum in order to reduce the conductor material and to avoid extra height of pole. Span : The distance between adjacent supporting towers is called span. Tension in conductor : To avoid the mechanical faiilure of the conductor the tension in the conductor should be low. The tension in conductor depends upon conductor weight, effect of temperature, ice and wind loading. So ...