What is IEC 61000-4-120:2019 ?

Title: IEC 61000-4-120:2019: A Technical Article on Electromagnetic Compatibility and Interference

Introduction

IEC 61000-4-120:2019 is an essential standard for ensuring the electromagnetic compatibility (EMC) of electrical and electronic equipment (1). It is developed by the International Electrotechnical Commission (IEC) and focuses on the testing and measurement techniques used for EMC. This standard defines a set of conditions that simulate realistic electromagnetic environments and outlines the guidelines for conducting the tests, test levels, and evaluation criteria.

What is IEC 61000-4-120:2019?

IEC 61000-4-120:2019 is an international standard that relates to the testing and measurement techniques used for EMC. It is specifically focused on immunity tests for electrical and electronic equipment against electromagnetic fields caused by radio transmitters or other sources. The standard provides guidelines for conducting the tests, test levels, and evaluation criteria to ensure that devices can function properly in the presence of electromagnetic interference.

What is IEC 61000-4-1:2019?

IEC 61000-4-1:2019 is an important international standard that relates to the testing and measurement techniques used for EMC. This standard focuses on immunity tests for electrical and electronic equipment against electromagnetic fields caused by radio transmitters. It provides guidelines for conducting the tests, test levels, and evaluation criteria to ensure that devices can function properly in the presence of electromagnetic interference.

The Purpose of IEC 61000-4-120:2019

The main purpose of the IEC 61000-4-120:2019 standard is to define a set of conditions that simulate realistic electromagnetic environments. By subjecting electrical and electronic equipment to these tests, manufacturers can assess the performance and susceptibility of their products to electromagnetic interference. The standard aims to ensure that products are capable of operating without being affected by electromagnetic interference from radio transmitters or other sources.

The Testing Process

To ensure that their products are compatible with the electromagnetic environment in which they are used, manufacturers must conduct tests to verify that their products meet the requirements of IEC 61000-4-120:2019. These tests typically include a series of procedures to measure the performance of the equipment in the presence of electromagnetic interference from various sources.

The standard defines four test levels, each of which is designed to simulate a different level of electromagnetic interference. The test levels are:

* Level 1: This is the lowest level of the test and is designed to simulate the presence of weak electromagnetic interference.

* Level 2: This level is designed to simulate the presence of moderate electromagnetic interference.

* Level 3: This level is designed to simulate the presence of strong electromagnetic interference.

* Level 4: This is the highest level of the test and is designed to simulate the presence of very strong electromagnetic interference.

Each test level is evaluated based on the equipment's performance, as measured by the standard. The equipment is then classified based on its performance, and the classification is used to determine the equipment's immunity to electromagnetic interference.

Conclusion

IEC 61000-4-120:2019 is an essential standard for ensuring the EMC of electrical and electronic equipment. It provides guidelines for conducting tests to simulate realistic electromagnetic environments and outlines the guidelines for conducting the tests, test levels, and evaluation criteria. By subjecting their products to these tests, manufacturers can ensure that their products are compatible with the electromagnetic environment in which they are used and can operate without being affected by electromagnetic interference from radio transmitters or other sources.

(1) IEC 61000-4-120:2019.