(1) The installation and use of porcelain insulators are unreasonable, such as mechanical loads exceeding regulations, voltage levels not meeting requirements, and improper installation positions.
(2) Due to sudden cold and hot weather, as well as external damage caused by hail.
(3) Flashover caused by dirty porcelain insulators during thunderstorm and fog weather.
(4) Short circuit of electrical equipment, damage to porcelain insulators caused by excessive electrical and mechanical stress.
Under what circumstances are porcelain insulators prone to damage?
Jul 10, 2023
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