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Composite insulator

Composite insulator

Country/Region china
Company Zhengzhou Cathay Electric Equipment Company
Categories Composite Insulators
Update 2019-09-21 02:13:09
ICP License Issued by the Chinese Ministry
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Introducing such insulators from the structure and advantages of composite insulators

Composite insulator structure
Synthetic insulators, also known as organic composite insulators, rubber insulators or non-porcelain insulators, are composite structural insulators composed of organic synthetic materials, mainly composed of a core rod, a metal fitting, a shed skirt and a bonding layer.

  • A fitting is a mechanical load transfer component of a composite insulator that is assembled with a mandrel to form a connector for a composite insulator. The structure affects the strength and mechanical properties of the mandrel of the insulator.

  • The shed skirt is the outer insulating part of the composite insulator. Its function is to make the composite insulator have high enough insulation resistance against wet flash and pollution flash to protect the mandrel from atmospheric erosion.

  • The mandrel is the load-bearing component of the mechanical load of the composite insulator and the main component of the inner insulation.

  • Part of the bonding layer is to complete the connection between the sheath and the mandrel with adhesive glue; the other part is to use the potting glue to complete the connection between the sheds. The quality of the bond is directly related to the level of internal insulation.

Synthetic insulator advantage

  • Excellent mechanical properties: the mandrel is made of epoxy glass fiber, its expansion strength is 1.5 times that of ordinary steel, 3 to 4 times that of high-strength porcelain, the axial tensile force is particularly strong, and it has strong vibration absorption capacity, and its seismic damping performance is very good. High, 1/7 to 1/10 for porcelain insulators.

  • Good anti-pollution performance: The synthetic insulator has water repellency. When it rains, the synthetic insulator umbrella-shaped corrugated surface will not wet and form a water film, which will drip in the shape of water droplets, which is not easy to form a conductive channel, and its pollution flash voltage is high. It is 3 times the same as the voltage grade porcelain insulator.

  • Excellent electrical corrosion resistance: the surface of the insulator leaks and flashes to form irreversible deterioration, the general standard is not less than 4.5 (ie 4.5kV), and the composite insulator is 6 to 7.

  • Good anti-aging performance: After ten years of practice test, the composite insulator has no change in surface non-wetting property and resistance to electric corrosion, except that the color is slightly deeper and the dielectric constant and dielectric loss angle are slightly increased. , indicating that the anti-aging performance is good.

  • Good structural stability: general porcelain suspension insulator is internal rubber assembly structure, galvanic corrosion, low zero value insulation resistance will be produced during operation, and synthetic insulator is external rubber assembly structure, mandrel is solid insulation material, no degradation And breakdown, there will be no zero-value insulators.

  • High efficiency of line operation: Synthetic insulators have good self-cleaning performance and no zero-value insulators. Therefore, cleaning and inspection work can be changed every 4 to 5 years, shortening the time for maintenance and power failure.

  • Light weight: The light-insulating insulator itself is light in weight, easy to transport and construction, and can greatly reduce the labor intensity of the staff.


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