抄録
The operation insulator part of a 550-kV disconnector has a middle universal joint which generates a nonlinear oscillation. Since the nonlinear oscillation characteristic of the middle universal joint was not clear, test device of the operation insulator was created and the nonlinear oscillation characteristic was clarified by the vibration test. Moreover, the Finite Element Method (FEM) model of an operation insulator part is proposed and it calculated in nonlinear analysis. Comparison examination of a measurement result and a calculation result was performed.