7

Mechanical Design of Transmission Line

CHAPTER OBJECTIVES

After reading this chapter, you should be able to:

  • Understand the overview of transmission line supports
  • Understand the calculation of sag
  • Discuss the effect of tower structure and environmental effects on sag calculation
7.1 INTRODUCTION

The design of a transmission line has to satisfy electrical as well as mechanical considerations. An overhead line comprises mainly of conductors, line supports, insulators, and pole fittings. These should have sufficient mechanical strength to withstand the worst probable weather conditions and other external interferences. This calls for the use of proper mechanical factors of safety in order to ensure the continuity of operation in the line. ...

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