Study of EMP effects experiment on the solid state relay

An experiment of EMP effects on the solid state relay is described. In order to get the radiation interference threshold value of the relay, the length of the connection is cut as short as possible. The radiation interference threshold value is found to be superior to 75kV/m. By using capacitor coupling, the conduction interference voltage threshold value 3850V is found. The experiment results also show that the EMP interference at the input port of the relay can induce transient switching on, which can cause misworking.