Study to the Interfacial Properties of Running Composite Insulators

To study the interfacial properties of running composite insulator, 37 from Guangdong area, 68 from Guangxi area and 48 from Hebei area with different operating life are selected as samples. The interfacial properties between the core and housing of the composite insulators, the interfacial properties of the juncture with the fittings, the core and the housing, and the interfacial properties between the sheds and the housing were detected. It was discovered that there are about 50% of running composite insulators have the appearance of poor adhesion between the housing and the core. Ends fittings and sealants exhibit different forms of failure phenomena, such as the ends sealant becoming hard, powdering, and sticky, thread and the inside of fittings getting rusting, the top sealant of core…