Analysis of Broken Accident of FRP Insulator Rod installed in Neutral Section of Electric Railway overhead line

초록

The accident of broken insulator rod leads to interruption of moving the subway. We investigate the analysis of analysis of breaking accident of FRP insulator rod installed in neutral section for overhead catenary feeding system. In order to analysis of accident reason, SEM is used to analysis microscopic structure on surface of cross section of broken FRP insulator rod. At the same time, we examine the change of atomic amount on surface of broken accident insulator through EDX analysis. Also, in order to check the mechanical strength, the tensile strength test is conducted. As obtained results, examination of broken insulator from SEM and EDX analysis, the shape of cross section is similar to brittle fracture. From the SEM picture, the resin was damaged by internal discharge and basic resin material, cutting glass fibers were located on the same surface and the surface of cutting glass fiber was smooth. We known that the main ingredients were detected CaCO3, SiO2 and Al2O3 from EDX analysis.