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Composite post insulator is a kind of silicone rubber apparatus insulators. Its design consists of a resin impregnated fiberglass core, a polymeric housing and metallic end fitting attachment devices. Composite station post insulator applies ANSI C29.19 international standard. Polymer or composite station post insulator can have many mechanical loadings: compression, cantilever, tensile and/or torsion, depending on the application.
138 kV Station Post Insulator Applications:
Station post insulators are typically used in all standard high-voltage switch and bus applications. They meet or exceed all ANSI standards in both electrical and mechanical characteristics for their voltage class.
138 kV Station Post Insulator Features:
- Hydrophobic, silicone polymer for improved contamination performance
- Over-molded design to prevent moisture ingress
- Lightweight, vandalism resistant and price competitive compared to porcelain
138 kV Station Post Insulator Specifications:
Customized according to customer needs
Wishpower professionally designs and manufacture the following products: composite insulators series used on HV transmission and distribution line, HDPE insulator,HDPE Pin insulator,composite insulators series used on electrified railway catenary flexible suspension section insulators used on the subway, rigid suspension insulators used on the subway, composite dry-type insulation capacitance bushing series, composite dry type transformer capacitance bushing series, composite dry type through-wall capacitance bushing series, composite housed zinc oxide arrester series, composite subway evacuation platform series, composite subway cable mounting bracket series, composite three-rail shield series used on electrified railway, composite insulation climb ladder series used on live working, high polymer interphase spacer, etc. electrical equipment.
Wishpower is a full-service supplier of power products, including insulator, fuse cutout, surge arrester and line construction hardware.
Raw Material / Parts Inspection
Silicone Rubber test
The produciton and inspection of Electric insulation silicone rubber
Silicone rubber standard: DL/T 376-2010
Electrical performance
1. Volume resistivity ≥1.0 X 10 Ω·m;
2.Surface resistivity ≥1.0 X 10 Ω;
3.Breakdown strength AC ≥20KV/mm, DC≥30KV/mm;
4.Tracking and electrical erosion ≥TMA4.5 grade;
5,Hydrophobicity satisfy the requirement on standard 6.2
Mechanical performance
1,Tearing strength(rectangularity)≥10kN/m;
2,Mechanical breaking strength ≥4MPa;
3,Tensile elongation ≥150%;
4,Shaw intensity ≥50Shore A;
5,Flammability≥ FV-0
Aging resistance
1. Ageing test for 1,000 hours
