IEC 61000-4-9
IEC 61000-4-9: Electromagnetic Compatibility (EMC) - Part 4-9: Testing and Measurement Techniques - Impulse Magnetic Field Immunity Test The purpose of this standard specifies the immunity requirements, test methods, and range of recommended test levels for equipment subjected to impulse magnetic disturbances mainly encountered in industrial installations, power plants, railway installations, and medium voltage and high voltage sub-stations. Preview Standard