Composite insulators used for 750kV power transmission lines

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: 750kV

2) Specified mechanical load (tensile): 400kN

3) Arcing distance: 6000mm

4) Creepage distance: ≥22000 mm

5) Secton length: 6550mm

6) Lightning impulse withstand voltage (Peak value): ≥2700kV

7) Wet 1 min power-frequency withstand voltage (Effective value): ≥1125 kV
8) Wet switching impulse withstand voltage 1800kV

9) Routine test load: 200kN

10) Approximate net weight: 62kg