Strain Insulator – High Tension Support for Overhead Lines
Strain insulators are an important piece of equipment for use on overhead power and telecommunication lines, providing mechanical support and electrical insulation. Strain insulators are intended for high tension. Strain insulators are typically located where the conductor or guy wire is experiencing mechanical stress such as the following locations: dead end poles, sharp angles, and terminations.
Where are Strain Found?
Strain can be found in:
Overhead transmission and distribution lines
Telecommunication towers
Railway electrification systems
Antenna and radio installation
Guyed pole structures
They are generally installed in a solitary position, either: between the pole and conductor (of a generally longer length conductor) or between segments of guy wire (an extensive length of wire) to electrically isolate and maintain mechanical strength and integrity.
Specifications of Strain
High tensile mechanical strength
Good electrical insulation
Weatherproof and UV resistant
Long service life with little maintenance
Compatible materials porcelain
Benefits of Strain
Preventing leakage of current to supporting structures
Support mechanical loads at dead-end points or tension points
Better reliability of the electrical system
Withstand extreme conditions of the environment
Meet acceptable design standards, such as, ANSI, IEC, IS.