This document primarily addresses the principles, system equipment configuration, test method introduction, and software closed-loop monitoring for low-frequency (DC–150 kHz) magnetic field immunity testing.

Core definition: The impulse voltage withstand test (also known as the surge voltage test) is a verification of whether the insulation system of equipment can withstand transient overvoltages (such as lightning strikes or switching overvoltages in the power grid) that may occur in actual use.