how to improve the success rate of meter reading methods and measures. Tenth, eleventh chapter explains in electronic energy meter performance testing in confusing error problem.
2014年1月14日星期二
Resin dry type transformer life cycle
Life Cycle: full performance from the beginning to the body to give a complete loss of the performance of the entire process . An insulating material , an insulating structure or even to a electrical products , is not a simple body , is required to have multiple components , such as electrical, mechanical and physicochemical properties. In its lifetime , an essential element of any failures have led to the end of its life . So, end of life is sometimes manifested as natural aging type , sometimes manifested as sudden unexpected . Many factors affect the life . Naturally, the internal and external factors, external factors act by internal factors . From the composition of the structure, the life of the resin
air circuit breaker transformers consists of life , the life of insulation , structural fasteners life electromagnetic structure of three parts. Practice has proved that the elements that play a decisive role in the life of the insulation structure. For resin insulation dry-type power transformers,
circuit breakers except SiO2 inorganic materials , all the rest of the organic polymer materials and organic materials accounted for 40 % -60 % volume fraction of insulation . Shielding material is oxygen and water as well as in organic matter decomposition temperature of the work environment , their life is almost timeless. Therefore, the resin insulation dry-type power transformer coil insulation life depends on the structure of the resin parts. Many factors affect the life of the insulation structure . Are: the electric field distribution and strength ; role of electric power and strength ; operating temperature and the stress state ; composition structure and composition of the insulating properties of the merits of the material ; operating environment of the product. Therefore , to achieve the life of the transformer, advocates from the " embryo " to start . Transformer life given by the manufacturer , parenting by the user.
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