8
Overhead Line Insulators
CHAPTER OBJECTIVES
After reading this chapter, you should be able to:
Discuss the various types of overhead line insulators
Understand the calculation of voltage distribution and string efficiency
Discuss the methods to reduce string efficiency
Discuss about testing of insulators
8.1 INTRODUCTION
Overhead line conductors are bare and not covered with any insulated coating. They are secured to the supporting structures by means of insulating fittings, called insulators. These insulators impede the flow of current from the conductors to the earth through the conductor supports. They provide insulation to the power conductors, passing through the clamps of the insulators, from the ground and are connected to the ...
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