What is IEC 61000-4-79:2019 ?

IEC 61000-4-79:2019 is an essential international standard that outlines the testing and measurement techniques used for electromagnetic compatibility (EMC) of electrical and electronic equipment. The standard focuses on immunity tests against electromagnetic fields caused by radio transmitters, providing guidelines for conducting the tests, test levels, and evaluation criteria to ensure that devices can function properly in the presence of electromagnetic interference.

The main purpose of IEC 61000-4-1:2019 is to define a set of conditions that simulate realistic electromagnetic environments. The standard subjects electrical and electronic equipment to tests, which are designed to assess their performance and susceptibility to electromagnetic interference from radio transmitters or other sources. By ensuring that products are capable of operating without interference, manufacturers can minimize the risk of malfunctions, data loss, or safety hazards.

IEC 61000-4-7:2019, also known as "Electromagnetic compatibility (EMC) - Testing and measurement techniques - General guide on harmonics and interharmonics measurements," provides guidelines for conducting measurements related to harmonics and interharmonics in electrical power networks. Harmonics are unwanted sinusoidal voltages or currents that occur at frequencies that are multiples of the fundamental frequency, causing disturbances and degradation of the power quality.

IEC 61000-4-7:2019 ensures consistent and accurate measurements of harmonics and interharmonics across different testing laboratories and equipment. It helps in evaluating the performance of electrical devices and systems, identifying potential issues, and implementing measures to mitigate the adverse effects of harmonic distortions.

Compliance with IEC 61000-4-7:2019 is crucial for the reliable and efficient operation of modern electrical systems. The increasing proliferation of non-linear loads, such as power electronics equipment, in our daily lives has led to an increase in harmonics levels. These harmonics can affect not only the power grid but also other connected devices and systems, potentially leading to malfunctions, data loss, or even safety hazards.

By adhering to the guidelines set forth in IEC 61000-4-7:2019, manufacturers, system integrators, and users of electrical equipment can assess the harmonic emissions and immunity performance of their devices. They can design and produce products that meet the required standards of electromagnetic compatibility, ensuring the smooth functioning of electrical networks and reducing the risk of disruptions.