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Composite Tension / Suspension Insulator DC 500kV
Composite Tension / Suspension Insulator DC 500kV

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Composite insulators used for 500kV DC 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 ±500kV
2) Specified mechanical load (tensile): 300kN
3) Arcing distance: 5835mm
4) Creepage distance: ≥21200mm
5) Section length: 6290mm
6) Lightning impulse withstand voltage (peak value): ≥+2700kV
7) Wet 1 power-frequency withstand voltage (Effective value): ≥ +650kV
8) Wet switching impulse withstand voltage: ≥+1675kV
9) Routine test load: 150kN
10) Approximate net weight: 48.5kg

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