We supply both high voltage and low voltage power line insulators for power transmission lines. Our power line insulators, made of composite polymer, are much more durable and eco-friendly in performance than those made of glass or ceramic. Information below is about Low Voltage 220kV Polymer Composite Power Line Insulator.
 
Features:
1) Manufactured by means of injection whole-molding technology;
2) The juncture between end fitting and core is totally embedded in HTV silicone; rubber, eliminating conventional and traditional seal defects.

Materials:
1) Silicon Rubber for sheds/ housing;
2) Glass-fiber reinforced epoxy resin rod (ECR type) for core;
3) Hop dip galvanized cast steel for metal fittings.

Electromechanical specifications:
1) Rated voltage: 220kV
2) Specified mechanical load (tensile): 100kN
3) Arcing distance: 2000mm
4) Creepage distance: 6400mm
5) Section length: 2240mm
6) Lightning full-wave impulse withstand voltage (peak value): 1000kV
7) 7.1 min wet power-frequency withstand voltage(effective value): 395kV
8) Routine test load: 50kN
9) Approximate net weight (grading rings included): 14.1kg