What is the actual effect of pollution resistance of composite insulators? To master the actual effect of pollution resistance, it is necessary to understand the overall structure of composite insulator.
The overall rod type design concept of composite insulator has compact structure, high quality and gross weight, which is 1 / 10 of that of flat grade porcelain and glass insulator. The transportation and installation are extremely fast. Suitable for muddy areas, high mechanical equipment, lashen load, long-span and compact roads. The flashover working voltage is 30% - 50% higher than that of flat grade porcelain and glass insulators. It has stable characteristics under the working temperature of - 60 ℃ - + 200 ℃; The selected design concept of non thermal breakdown type does not need to measure zero value in operation.
(1) Excellent turbidity characteristics. The surface layer of the raw material of silicone umbrella cover is not only hydrophobic at that time, but also can be corrected when the hydrophobicity is temporarily lost under the operation specifications of the road. Water drops occur on the surface of the raw material, and most of the thin membrane of the silica gel liquid swallows the turbidity, thus inhibiting the melting of positive ionic chemicals in the water, reducing the leakage current and improving the turbidity flashover working voltage. These properties are maintained even when the silica gel raw material is embrittled. Therefore, the credibility of electromagnetic energy transportation is improved, and the cleaning and protection costs of insulators are significantly reduced.
(2) Excellent UV resistance, corrosion resistance,
(3) The gross weight of 110kV / 100kN composite long rod insulator with small and light specification is only 12% of that of 70kN ceramic insulator. The light gross weight greatly saves the cost of installation and transportation. It tends to need no lifting equipment, and is very suitable for emergency road maintenance and the construction, protection and maintenance of roads in poor areas where vehicles are not accessible; It can simplify the tower structure and allow a large span (reduce the total number of towers); It also shows the norms for the development trend of compact roads.
(4) The manufacturing and supply time is much shorter than that of ceramic insulators
(5) It is unnecessary to check the zero value of grounding resistance.
(6) Without ductility defects, such characteristics are not only beneficial to installation and transportation, but also promote its resistance to electric isolation, and its working capacity is much higher than that of ceramic insulator washing machinery
