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  • Product description and use method:

    Composite insulator

    Product introduction

    The composite insulator is composed of an insulating core rod, a silicon rod rubber umbrella cover, and connecting metal fittings at both ends.
    Insulation core rod is the abbreviation of epoxy resin glass fiber pull-out rod. It is the skeleton of composite insulators. It plays multiple roles such as supporting umbrella sleeves, internal insulation, connecting hardware at both ends, and withstanding mechanical loads. Strength, generally up to 600Mpa or more, is twice that of ordinary steel, 5-8 times that of porcelain, and has good dielectric properties and chemical resistance, as well as good resistance to bending fatigue, creep and impact. Sex. The silicone rubber umbrella cover mainly protects the core rod, shields rain and snow, increases the creepage distance and external insulation of the product. It is based on the polymer polymer silicone rubber, supplemented with flame retardants, anti-aging agents, and coupling. Fillers such as additives are vulcanized at high temperature and pressure, and have good hydrophobicity and migration, and good corrosion resistance, aging resistance, electrical insulation and other properties. And it has a high pollution flashover voltage and crush resistance, uniform voltage distribution, and its flashover voltage is more than twice that of porcelain under the same conditions compared with porcelain.
    The composite insulators produced by our company use metal fittings made of special steel. The ends of the metal fittings use the labyrinth design principle, multi-layer protection, and good sealing performance, which solves the most critical problem of the insulator-interface electrical breakdown. The connection between the hardware and the core rod adopts the world's most advanced computer-controlled coaxial constant pressure crimping process, and is equipped with a fully automatic acoustic emission flaw detection system to ensure the reliability and stability of the connection between the hardware and the core rod. The core rod is an ERC high temperature acid-resistant rod, and the interface between the core rod and the silicone rubber is coated with a special coupling agent. The umbrella cover adopts the one-time integral molding process under high temperature and high pressure, and the two-stage vulcanization process monitored by computer, which prolongs the service life of the product. Advanced production equipment and manufacturing technology, complete testing equipment and testing methods ensure that all technical indicators of the product meet relevant domestic and international standards, and become a new generation of insulators for high-voltage transmission and transformation lines.


    Product Types of Composite Insulators

    FXBW ----- rod type composite insulator
    FPQ ----- composite pin insulator
    FZSW ----- Composite post insulator
    FS ----- composite crossarm insulator
    FCGW ----- composite dry wall bushing
    FQE (X) ----- Composite insulator for electrified railway
    FQJ ----- Roof composite insulator for electrified road


    3. Conditions of use

    Ambient temperature -40 ℃ ~ + 40 ℃
    Altitude does not exceed 1500 meters, AC power frequency does not exceed 100HZ
    Maximum wind speed does not exceed 35m / s
    Earthquake intensity does not exceed magnitude eight


    Fourth, the performance characteristics of the product

    Small size and light weight, it is about 1/5 ~ 1/9 of porcelain insulator of the same voltage level, which is convenient for transportation and installation.
    The composite insulator has high strength, reliable structure, stable performance, and large margin for safe operation, which guarantees the line and safe operation.
    Composite insulators have superior electrical properties. Silicone rubber umbrellas have good water-repellency and migration properties, good dirt resistance, and strong anti-pollution flashover capability. They can operate safely in heavily polluted areas, and do not require manual cleaning. Zero values can be avoided maintain.
    Composite insulators have the characteristics of acid resistance, alkali resistance, heat aging resistance and electrical resistance, good sealing performance, and can ensure that their internal insulation is not affected by moisture.
    The composite insulator has good brittleness resistance, strong shock resistance, and no brittle fracture accidents will occur.
    Composite insulators are interchangeable and can be used interchangeably with insulators such as porcelain.


    Five, metal fittings crimp monitoring technology

    The crimping process of metal fittings is monitored by acoustic emission detection technology. This technology was previously only used for scientific research experiments in the aerospace field. Its sensitivity can distinguish the breakage of several glass fibers, and an acoustic and optical alarm device ensures the crimping quality. And the use of advanced coaxial constant pressure technology, compared with the stroke positioning control, can overcome the crimping quality instability caused by the size error of the hardware, is the world's most advanced crimping method.


    Six, superior umbrella cover characteristics

    Excellent silicone rubber formula, advanced one-time molding technology and secondary vulcanization process make the product have irreplaceable advantages compared with traditional ceramic insulators.

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