Electromagnetic Compatibility (EMC)
You may sometimes observe interference between your mobile phone and your TV due to their proximity and the fact that they influence each other electromagnetically.
The aim of electromagnetic compatibility (EMC) is to keep those side effects as much as possible under control by using all the existing and future techniques and technologies in order to reduce disturbance and improve immunity.
That is the reason why the European Parliament and the Council adopted in December 2004 the Electromagnetic Compatibility (EMC) Directive (2004/108/EC) that concerns both immunity and emission over the whole frequency range.
The publication of this EMC Directive and the associated mandate had triggered CENELEC to ensure the preparation of harmonized standards. When listed in the Official Journal of the European Union (OJEU) and used by the manufacturer, those standards not only serve as the state of the art but also give the presumption of conformity to the Essential Requirements of the Directive.
To this end, CLC/TC 210 "EMC" was set up with the role not only to coordinate the EMC standardization activities undertaken by the product committees but also to set up a system to encompass EMC activities. This led to the known hierarchical structure of basic, generic and product (family) standards that form the basis of EMC compliance.
Through the IEC/CENELEC cooperation agreement, the EMC generic and product requirements were taken over by IEC who is producing the substantial part of EMC standardization. This resulted into the present situation, where IEC Committees prepare most of the work, which is then submitted to parallel IEC/CENELEC procedures on the resulting Committee Draft for Vote (CDV) and the Final Draft International Standard (FDIS), leading to one major principle: to ensure that worldwide standards are transposed into European standards which, in their turn, are used in the legal European framework.
The CLC/TC 210 prepared two Guides on EMC:
- The CENELEC Guide 24 "Electromagnetic Compatibility (EMC) Standardization for Product Committees concerned with apparatus", latest edition issued in 2009, advise on the application of the generic and basic EMC standards and on the preparation of product i.e. product-family or dedicated product EMC standards.
- The CENELEC Guide 25 "Guide on the use of standards for the implementation of the EMC directive to apparatus", latest edition issued in 2009, gives advice on how to use the standards under EMC directive.