The new European electromagnetic compatibility standards for railways

AbstractThe EC directive on electromagnetic compatibility (EMC) was first agreed in 1989. Generic EMC standards appeared in the early 1990s. However, a transition period was implemented throughout the community from 1992 until December 1995, largely in order for product-specific standards to appear and also to allow time for industry to adapt to the change in legislation. At radio frequencies, the railway industry in the United Kingdom had made use of a standard produced by the Railway Industry Association (RIA) Committee 18 prior to the European Commission (EC) directive. This committee has made a substantial contribution to the Cenelec (European Committee for Electrotechnical Standardization) working groups which have produced five railway EMC pre-standards (ENV50121-1 to ENV50121-5) which were agreed in December 1995. There is a need in the period of two to three years from this date to develop the pre-standards and trial them with a view to turning them into full standards. Compliance with the EMC dir...