What is IEC 61000-4-9:2019?

IEC 61000-4-9:2019 is a professional technical standard that specifies the immunity requirements and test methods for audio-frequency conducted disturbances, both intentional and unintentional, in power supply systems. This international standard provides guidance for evaluating power frequency magnetic field immunity on equipment intended for use in environments with high levels of conducted low-frequency disturbances.

Understanding the Scope of IEC 61000-4-9:2019

The scope of IEC 61000-4-9:2019 includes equipment that receives its power supply directly from the public low-voltage distribution system or is powered by external sources feeding into this system. It applies to all types of electrical, electronic, and electromechanical equipment, as well as sub-assemblies and components.

This standard takes into account the vulnerability of various equipment due to electromagnetic disturbances, particularly those generated by power systems operating at nominal voltages of 220 V, 230 V, and 240 V at 50 Hz or 60 Hz AC.

Implementing IEC 61000-4-9:2019 for Compliance

Complying with IEC 61000-4-9:2019 requires performing various tests to ensure equipment's immunity to power frequency magnetic fields. These tests involve creating controlled magnetic field disturbances and verifying the performance of the equipment under these conditions.

The standard specifies the necessary test parameters, procedures, and acceptance criteria for different equipment categories. By following these guidelines, manufacturers can assess their products' ability to function properly in environments where power frequency magnetic fields are present.

Benefits of Adhering to IEC 61000-4-9:2019

By adhering to the requirements of IEC 61000-4-9:2019, manufacturers can ensure their equipment operates reliably in power system environments with varying levels of conducted low-frequency disturbances. Compliance with this standard helps prevent malfunctions, interference, and failures that may be caused by magnetic field disturbances.

Additionally, complying with this standard enhances the overall quality and safety of electrical and electronic equipment, ensuring they are suitable for use in a wide range of applications and environments where these disturbances can occur.

In conclusion, IEC 61000-4-9:2019 is an important technical standard that defines the immunity requirements and test methods for audio-frequency conducted disturbances in power supply systems. Adhering to this standard offers significant benefits for manufacturers, including enhanced performance, reliability, and safety of electrical and electronic equipment.