The insulation failure of the switchgear will affect the normal operation of the electrical equipment. In the special fields such as nuclear power

high voltage equipment will be affected by earthquake which will cause insulation damage and affect the normal work of the whole switchgear

and the consequences will be very serious. It is important to calculate and simulate the deformation of the cabinet under the action of earthquake. The anti-seismic analysis of the nuclear 1E F-C AC metal enclosed switchgear cabinet and main components used the workbench for the simulation platform. The high performance parallel computer is used as the computing platform

and the modal decomposition response spectrum method is used as the theoretical basis. The anti-seismic performance evaluation of its overall structure will provide important reference for the further structural optimization.