BS EN 55011:2016+A2:2021

What is BS EN 55011 about?  

Electronic equipment can be vulnerable to radio frequency disturbance. This interferes with performance. BS EN 55011 specifies requirements to protect equipment such as radio and TV receivers, microwave ovens, and scientific instrumentation from radio frequency interference.  

BS EN 55011 is also applicable to industrial, scientific and medical (ISM) electrical equipment operating in the frequency range 0 Hz to 400 GHz. 

BS EN 55011 covers emission requirements related to radiofrequency (RF) disturbances in the frequency range of 9 kHz to 400 GHz. For ISM radiofrequency applications, BS EN 55011 covers emission requirements related to radio-frequency disturbances in the frequency range of 9 kHz to 18 GHz. 

You will also find requirements for ISM RF lighting equipment and UV irradiators operating at frequencies within the ISM frequency bands defined by the ITU Radio Regulations, in BS EN 55011. BS EN 55011 includes amendments giving further information on type test requirements for SPCs, and improved repeatability for measurements in the frequency range 1-18 GHz. 

Who is BS EN 55011 for? 

BS EN 55011 on ‘radio-frequency disturbance characteristics’ (ISM RF) is applicable to: 

• White goods / domestic appliances manufacturers 
• ISM electrical equipment manufacturers 
• Design engineers 
• Procurement engineers 
• Product testers 
• Regulatory bodies 

Why should you use BS EN 55011? 

Electronic equipment can function effectively only if it is immune to interference from surrounding radio frequencies. Medical and scientific equipment, as well as domestic products need to work precisely, and without interruption. Bandwidth distribution is a solution to ensure this. 

The guidelines in BS EN 55011 help you to manufacture products that comply with these specified bandwidth distribution requirements. These emission requirements are designed to protect equipment that is sensitive to radio frequency interference.  

This amendment includes further information for full inclusion of type test requirements for semiconductor power converters (SPC). This improves repeatability for measurements for group 2 equipment in the frequency range 1-18 GHz, thus avoiding expensive retesting.  

This standard will remain relevant, as electronic products meet the demands of a smart energy environment. 

BS EN 55011:2016+A2:2021 contributes to UN Sustainable Development Goal 9 on industry, innovation and infrastructure because it contributes to building resilient infrastructure. 

What’s changed since the last update?  

BS EN 55011:2016+A2:2021 supersedes BS EN 55011:2016+A11:2020. BS EN 55011:2016+A2:2021 includes some technical changes with respect to BS EN 55011:2016+A11:2020. These include: 

• Introduced the fully anechoic room (FAR) for measurements of the disturbance 
• Includes further information for full inclusion of type test requirements for semiconductor power converters. These requirements apply only to power conversion equipment intended for assembly into photovoltaic power generating systems, such as grid power converters (GCPCs) intended for assembly into energy storage systems