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Abstract
Resistive current live test plays an important role in the technical supervision of metal oxide arrester (MOA). At the same time, there are some conditions that MOA can not find hidden dangers and defects through AC leakage current live test. This paper puts forward an assumption: the AC leakage current live test technology under operating voltage has different fault detection effects on different insulating parts of MOA. It is found that in the overall AC leakage current composition of the arrester, the resistance sheet and porcelain jacket account for a large proportion, and the proportion of FRP core insulating support rod and epoxy resin insulating cylinder is very small, so the AC leakage current test under operating voltage can effectively detect the faults on the resistance sheet and porcelain jacket, and it is difficult to detect the insulating support rod Fault on insulating cylinder (or insulating package). This study clears a blind spot of the safe operation of the arrester, provides a reference for the condition based maintenance of the arrester, and improves the operation and maintenance level of the arrester.
Published Version
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