EN55011

EN55011 is a European standard that specifies the limits and methods of measurement for electromagnetic disturbances from industrial, scientific, and medical (ISM) electrical equipment. It is part of the broader EN 61000 series of electromagnetic compatibility (EMC) standards. The purpose of EN55011 is to ensure that equipment operating within these frequency bands does not cause unacceptable interference to other radio services or to the operation of other electronic equipment.

The standard covers emissions in the radio frequency range, specifically from 0 Hz to 400 GHz. It defines different classes of equipment based on their intended use and the environments in which they are expected to operate. Class A equipment is intended for use in non-residential environments, while Class B equipment is intended for use in residential environments as well as non-residential ones. Limits for radiated and conducted emissions are specified for each class.

EN55011 is crucial for manufacturers who wish to place their ISM equipment on the European market. Compliance with this standard is a prerequisite for obtaining the CE marking, which indicates that the product meets all relevant EU directives. Testing according to EN55011 is typically performed by accredited laboratories to verify that the equipment meets the specified emission limits. The standard is periodically updated to reflect technological advancements and evolving EMC requirements.