What is IEC 61000-4-9:2019?

IEC 61000-4-9:2019 is an international standard that addresses the immunity requirements and test methods for electrical and electronic equipment when subjected to conducted, common mode disturbances in the frequency range of 0 Hz to 150 kHz. The standard provides guidelines for evaluating the performance of equipment under these disturbances to ensure their proper functioning in real-world scenarios.

Importance of IEC 61000-4-9

With the increasing use of sensitive electronic devices, it has become crucial to ensure their reliable operation even in the presence of electromagnetic disturbances. Common mode disturbances, which occur when multiple components share a common signal reference, can cause malfunctions or complete failure of electronic systems. IEC 61000-4-9 provides a standardized approach to assess the equipment's immunity to such disturbances, helping manufacturers design and produce more robust and dependable products.

Requirements and Test Methods

The standard specifies the immunity levels and test methods for various types of equipment, including industrial, commercial, and residential devices. It defines the test setup, measurement procedures, and evaluation criteria to determine whether the equipment under test meets the required performance levels. The tests involve injecting disturbances into the equipment and monitoring their impact on its functionality. Compliance with the standard ensures that the equipment can withstand common mode disturbances encountered in different environments.

Benefits of Compliance

Complying with IEC 61000-4-9 offers several advantages for both manufacturers and end-users. Manufacturers can demonstrate the reliability and quality of their products by obtaining conformity certificates based on the standard. This certification enhances the marketability of the equipment and instills customer confidence. For end-users, using compliant products ensures uninterrupted operation and reduces the risk of equipment failure due to electromagnetic disturbances. Additionally, compliance with the standard helps create a consistent and uniform approach to evaluating the immunity of electrical and electronic equipment.