What is IEC 61000-4-105:2019?

IEC 61000-4-105:2019 is an international standard that specifies the immunity requirements and test methods for equipment used in power utilities, industrial environments, and other sectors. This standard, titled "Electromagnetic compatibility (EMC) - Part 4-105: Testing and measurement techniques - Flicker mitigation tests", was published by the International Electrotechnical Commission (IEC) and provides guidelines to evaluate the resistance of equipment to flickering phenomena.

Flicker and its Impact

Flicker refers to the rapid changes in light intensity perceived by the human eye due to fluctuations in the power supply. It is often caused by the operation of equipment with varying power consumption, such as arc furnaces, welding machines, and certain types of lighting. Flicker can have various negative effects, including visual discomfort, reduced visibility, and even health issues like migraines and seizures.

The Importance of IEC 61000-4-105:2019

IEC 61000-4-105:2019 plays a crucial role in ensuring the reliability and safety of electrical and electronic equipment. By complying with this standard, manufacturers can ensure that their products are less susceptible to flicker-related issues and perform optimally in various environments. Additionally, adherence to the standard helps avoid potential legal or financial liabilities resulting from equipment malfunction or user dissatisfaction.

Testing Procedures and Compliance

IEC 61000-4-105:2019 outlines specific testing procedures to assess the susceptibility of equipment to flicker. These tests involve measuring the flicker indices generated during different conditions, such as voltage changes and load fluctuations. The standard provides detailed guidelines regarding test setup, test equipment, and assessment criteria. Compliance with these procedures helps identify potential weaknesses in equipment design and allows for necessary improvements to enhance flicker immunity.

In conclusion, IEC 61000-4-105:2019 is a significant standard that addresses the issue of flicker immunity in electrical and electronic equipment. Compliance with this standard ensures that products are capable of withstanding flickering phenomena and reduces the risks associated with flicker-related problems. By following the testing procedures and guidelines provided in the standard, manufacturers can enhance the performance, reliability, and safety of their equipment, thereby benefiting both the industry and end-users.