Technological Innovation

What is BS EN 55016-2-2:2016

BS EN 55016-2-2:2016 is a technical standard that provides specifications for electromagnetic compatibility (EMC) testing of equipment used in electrical and electronic systems. It focuses on emissions and immunity requirements in relation to radio frequency interference, ensuring that devices do not interfere with each other or with other external systems.

Understanding EMC Testing

EMC testing, as defined by BS EN 55016-2-2:2016, involves evaluating the ability of electrical and electronic devices to operate in electromagnetic environments without causing or being susceptible to electromagnetic interference (EMI). This testing is crucial to ensure reliable and safe operation of various equipment, especially in industries such as telecommunications, automotive, aerospace, medical, and consumer electronics.

In order to comply with the standards set by BS EN 55016-2-2:2016, equipment manufacturers must conduct comprehensive EMC tests at different stages of product development. These tests encompass both emissions measurements, which assess the amount of electromagnetic energy emitted by the device, and immunity measurements, which evaluate the device's resistance to external electromagnetic signals.

Emissions Measurements

One key aspect of EMC testing is emissions measurements. The goal is to determine the levels of radiated and conducted emissions generated by the equipment under test (EUT). Radiated emissions refer to the electromagnetic energy radiated through the air or free space, while conducted emissions relate to energy conducted through power cables or other interconnecting cables within the EUT.

The BS EN 55016-2-2:2016 standard specifies different measurement methods to assess emissions at various frequency ranges. For radiated emissions, an anechoic chamber is typically used to create an isolated environment where measurements can be taken accurately. Conducted emissions are measured using a variety of methods, including current probes and voltage probes connected to the EUT's power lines.

Immunity Measurements

EMC testing also involves immunity measurements to evaluate a device's ability to tolerate electromagnetic disturbances without malfunctions or performance degradation. These measurements assess how well the equipment under test can withstand common sources of interference, such as electrostatic discharge, conducted RF disturbances, and electrical fast transients (EFT).

The BS EN 55016-2-2:2016 standard outlines specific test levels and procedures for assessing immunity across different frequency ranges. For example, electrostatic discharge tests simulate the impact of static electricity on the EUT, while conducted RF disturbance tests replicate disturbances injected into the EUT's cables. By subjecting the device to these tests, manufacturers can ensure that their products can operate reliably in real-world electromagnetic environments.


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