IEC 61000-4-8 is a test standard developed by the International Electrotechnical Commission (IEC) for testing the immunity of electronic equipment when exposed to magnetic disturbances within the frequency range of 50 Hz to 60 Hz while under operating conditions. Disturbances related to capacitive or inductive coupling in cables or other parts during field installation are not considered in this standard. Industrial installations and power plants, residential and commercial locations, and medium to high voltage sub-stations are considered under IEC 61000-4-8. The recommended test levels, test equipment, test set-up, and test procedure needed are described within the standard. The goal of IEC 61000-4-8 is to institute an acceptable basis for evaluating the performance of electronic equipment in household, commercial, and industrial applications when exposed to magnetic fields.
IEC 61000-4-9 relates to the testing of the immunity of electronic equipment when exposed to impulse magnetic disturbances. This standard describes the immunity requirements, test methods, and the range of recommended test levels for conducting an immunity test. The primary areas where impulse magnetic disturbances are experienced are in power plants, industrial installations, railway installation, and medium to high voltage sub-stations. The goal of IEC 61000-4-9 is to institute an acceptable and reproducible basis for evaluating the performance of electronic equipment when exposed to impulse magnetic disturbances.
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