Simulation Calculation of Pre-arcing Time for Sand Fuses

The current field and temperature field of the fuse during the transient process were analyzed and the two fields above were set up based on energy conservation law.A model of the thermoelectric coupling field of the fuse was established.The model was analyzed based on Ansys.The results of the research could be used as the principle to select fuse and solve the protection problem of thermal effect and overvoltage.