overhead line fittings serve for the mechanical attachment, for the electric connection and for the protection of conductors and insulators.In relevant standards, fittings are frequently designated as accessories which may consist of elements or assemblies.

The overhead line has the characteristics of low cost, convenient material acquisition, easy construction and convenient maintenance.Often used for long-distance transmission of electrical energy. The main components used in overhead lines are: conductors, arresters,insulators, towers and foundations, cables, and fixtures.

General requirements for overhead lines:

Overhead lines should widely use steel-cored aluminum stranded wire or aluminum stranded wire. The cross-section of the aluminumstranded wire of the high-voltage overhead line shall not be less than 50 square millimeters, the cross-section of the core aluminum stranded wire shall not be less than 35 square millimeters; the cross-section of the empty wire shall not be less than 16 square millimeters.