Product Introduction

    The core of 220kV suspension composite insulator is formed by resin bonding millions of glass fibers arranged in parallel along the axis of the FRP rod, tensile strength is higher than 600MPa, 3 to 5 times higher than high-strength porcelain, equivalent to high-quality carbon steel, with good flexural and fatigue resistance, to withstand the mechanical load of synthetic insulators, is the main part of the internal insulation, the choice of small creep reinforcing fibers and resin to ensure that the core rod has good mechanical and electrical properties.

    Composite insulators have played a pivotal role in preventing large area power grid fouling accidents in China. In the past decade, the amount of UHV transmission lines has been growing rapidly, and the amount of composite insulators has far exceeded that of porcelain and glass insulators in most of the new UHV transmission lines in China, accounting for about 80% of the insulators used in the whole transmission lines, and even up to 85% or more in some lines.

Technica Date

Advantages

• Adopting special A and B rubber mixing process, treating silica and aluminum powder respectively during the rubber refining process, fully dispersing various powders and matching agents evenly, which is conducive to the stable performance of vulcanized rubber.
• Adopt high quality fumed silica, the tearing strength of umbrella material is not less than 4.8MPa, the tearing strength is not less than 13.5N/mm, the tearing elongation is not less than 260%, and the physical and mechanical properties are excellent.
• Adopt D50=1±0.3μm and D50=3~6μm aluminum hydroxide powder, which solves the shortcomings that the aluminum powder particle size is too small to cause sticky mold and the aluminum powder particle size is too large to cause poor performance of the umbrella sleeve material, and ensures the excellent electrical and mechanical properties of the umbrella sleeve material.