24kv 70kn Rod Suspension Composite Insulator Polymer FXB-24-70
|Rod Suspension Composite Insulator Polymer|
|Type||Rated voltage||Rated Rated mechanical load||Creepage distance||Power frequency wet withstand voltage||Dry lightning impulse withstand voltage|
Composite insulator is a high voltage insulator made of organic silicone rubber composite material. The main products are bar type and cross arm type, which can be used as overhang and tensile bearing insulation on 35kV, 110kV and 220kV lines. Currently there are also insulator products for 10kV lines.
The shape structure of composite insulator is similar to that of suspension insulator, which is composed of end fittings, insulation umbrell-shaped corrugate, sheath and single sleeve rod.
Composite insulators can be divided into: line composite insulators and power station, electrical composite insulators. It can also be divided into rod suspension composite insulators, needle composite insulators, cross arm composite insulators, pillar composite insulators, windbreak composite insulators and so on.
It has the following advantages:
(1) Superior mechanical properties: as the heart rod is made of epoxy glass fiber, its expansion strength is 1.5 times that of ordinary steel and 3 ~ 4 times that of high-strength porcelain, its axial tensile force is particularly strong, and it has strong vibration absorption ability, and its seismic damping performance is very high, 1/7 ~ 1/10 of that of porcelain insulator.
(2) The composite insulator string has good anti-pollution flashover performance: the composite insulator has hydrophobicity. When it rains, the umbrella-shaped corrugated surface of the composite insulator will not get wet and form a water film. Instead, it drops like a water bead and is not easy to form a conductive channel.
(3) Excellent corrosion resistance: the surface leakage and flashover of the insulator form irreversible deterioration and trace phenomenon. The general standard is not lower than grade 4.5 (that is, 4.5kV), and the composite insulator is grade 6 ~ 7.