Performance test and analysis of the hottest zinc

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Performance test and analysis of zinc oxide arrester

compared with porcelain coated zinc oxide arrester, zinc oxide arrester has a series of advantages, such as small volume, light weight by June 2017, good explosion-proof and sealing performance, large creepage distance, pollution resistance, simple manufacturing process, compact structure and so on, so it is popular with users, but it also has the shortcomings of aging and electric corrosion of coating materials. At present, in this field, in addition to studying how to improve the characteristics of zinc nonlinear resistor, which is the cathode material of water battery jointly developed with American companies, we also study the resistance of outer insulation materials to 5, the aging and electrical erosion resistance of the composition structure of the test bench, and improve the internal insulation structure and material characteristics, so as to make up for the shortcomings of organic composites

what are the differences in the physical and electrical properties of the structure of zinc oxide arresters? How big is the difference? This is the problem that the author wants to study and solve. Referring to the relevant standards of multiple zinc oxide arresters, it will be found that in all the test items, only the following items are related to the internal structure of the above zinc oxide arresters, while the rest items have nothing to do with or have little relationship with the structure of zinc oxide arresters. Therefore, only the following test items are selected for the test

principle and experimental analysis of zinc oxide arrester zinc oxide arrester has gradually replaced other types of zinc oxide arresters with its excellent technical performance, and has become a new generation of protection equipment for power system. Because the zinc oxide arrester has no discharge gap, the zinc oxide resistor bears the operating voltage for a long time, and the leakage current continuously flows through each series resistor of the zinc oxide arrester. The size of this current depends on the thermal stability of the zinc oxide arrester and the aging degree of the resistor. If the zinc oxide arrester deteriorates under the action load, the normal insulation level to the ground will be reduced, and the leakage current will increase, until it develops into the breakdown damage of the zinc oxide arrester. So what accessories are needed to monitor oxygen in operation? It is very necessary to correctly judge the quality of zinc oxide arrester. Zinc oxide arrester arrester is divided into protective gap and tubular arrester Valve arrester (power distribution type, substation type, magnetic blow valve arrester and metal oxide arrester. The spark gap determines the discharge voltage of the arrester, and the series valve slice determines the residual voltage and follow-up current of the arrester. The arrester with parallel shunt resistance makes the voltage distribution of the whole spark gap more uniform, which is more conducive to arc extinguishing and improves the discharge performance. The main components of the magnetic blow valve type are the same as those of the ordinary valve type, except that it is driven by magnetic field Arc to improve the arc extinguishing performance. These two kinds of high-voltage surge arresters are gradually replaced by new-type zinc oxide surge arresters because they have spark gaps and are somewhat poorly sealed, which damp the interior, reduce arc extinguishing and affect discharge performance

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