The IEC 61000-4-7 is a standard developed by the International Electrotechnical Commission (IEC). It’s part of the IEC 61000 series, which is focused on electromagnetic compatibility (EMC). Specifically, the IEC 61000-4-7 standard deals with the testing and measurement techniques for harmonics and interharmonics measurements and instrumentation for power supply systems and equipment connected to it.
The standard applies to instrumentation intended for measuring spectral components in the frequency range up to 9 kHz, superimposed on the fundamental frequency of power supply systems at 50 Hz and 60 Hz. For practical considerations, it distinguishes between harmonics, interharmonics, and other components above the harmonic frequency range, up to 9 kHz.
IEC 61000-4-7 defines the measurement instrumentation for testing individual items of equipment according to emission limits given in certain standards, such as harmonic current limits given in IEC 61000-3-2, as well as for the measurement of harmonic currents and voltages in actual power supply systems. Instrumentation for measurements above the harmonic frequency range, up to 9 kHz, is tentatively defined.
This standard is an essential guide for those involved in the development and testing of electronic equipment and appliances to ensure they do not contribute to or are adversely affected by electromagnetic disturbances in their operating environment. It is widely used in compliance testing, design verification, and quality control processes in various industries.