Abstract
Insulator, electrical device designed for electrical isolation and mechanical fastening of electrical installations or their separate parts, which are under different electrical potentials. As an element of the power system, it plays an important role in ensuring its reliable operation. At present the issue of diagnostics and monitoring of insulators is still topical. The article provides statistical data of failures on overhead lines and lists methods and devices for detecting insulation damage. The research problem is the lack of a reliable and cost-effective device for early detection of insulator failure under voltage. The solution is the previously proposed method of diagnosing single-element insulators by temperature. The author proposed a scheme of the diagnostic device, described its principle of operation in normal and emergency modes. The diagnostic device made according to the proposed scheme is simple, works under voltage and without the intervention of operating personnel.
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