What is IEC 61000-4-11:2019?

IEC 61000-4-11:2019 is an internationally recognized standard that addresses voltage dips, short interruptions, and voltage variations on public low-voltage power supply systems. It provides guidelines for evaluating the impact of these disturbances on electrical and electronic equipment.

Scope and Objectives

The scope of IEC 61000-4-11:2019 covers voltage dips caused by sudden changes in load conditions, as well as short interruptions resulting from faults in the power supply. It aims to ensure that equipment continues to function properly during these disturbances, minimizing any potential negative effects on performance or safety.

The main objectives of this standard are:

Define test procedures and evaluation methods for voltage dips, short interruptions, and voltage variations;

Evaluate the immunity of electrical/electronic equipment to these disturbances;

Provide guidance on the design and installation of equipment to withstand such disturbances;

Establish a common reference for manufacturers, testing laboratories, and end-users.

Testing Requirements

IEC 61000-4-11:2019 specifies the test setup, procedure, and measurement methods to assess the immunity of equipment against voltage dips, short interruptions, and voltage variations. The tests involve subjecting the equipment to various types of disturbances and monitoring its behavior during and after the events.

It also sets out the criteria for evaluating the equipment's response to these disturbances, considering factors such as functionality, performance, and safety. The standard provides clear guidelines on what constitutes an acceptable level of immunity and how to interpret the test results accurately.

Key Benefits

Compliance with IEC 61000-4-11:2019 offers several benefits to manufacturers, testing laboratories, and end-users alike.

For manufacturers, it ensures that their products meet international standards for immunity against voltage dips, short interruptions, and voltage variations. This enhances the reliability and performance of their equipment, giving them a competitive edge in the market.

Testing laboratories benefit from adopting this standard as it provides a common framework for conducting tests and evaluating results. It facilitates consistency and comparability among different labs, enabling reliable equipment assessment and certification.

End-users, such as businesses and consumers, can have increased confidence in the quality and reliability of the electrical and electronic equipment they purchase. Compliance with this standard assures them that the equipment will continue to function as intended, even under adverse power supply conditions.

In conclusion, IEC 61000-4-11:2019 is an important standard that addresses voltage dips, short interruptions, and voltage variations on public low-voltage power supply systems. It sets out testing procedures and evaluation methods to ensure equipment immunity against these disturbances, benefiting manufacturers, testing laboratories, and end-users by enhancing reliability and performance.