Recently, various electrical and radio devices are being used in railway systems. Electric railway systems will potentially radiate disturbance waves to cause radio interference, because they use high electric power and many types of electrical devices. On the other hand, railway systems will potentially be affected by disturbance waves radiated from various electrical devices outside or inside railway systems. Therefore, the Electromagnetic Compatibility (EMC) on railway systems becomes an important key technology. The problem of these radio interference phenomena is discussed internationally. International Special Committee on Radio Interference (CISPR) and IEC Technical Committee 9 (IEC/TC9: Electric Railway Equipment) are standardizing the measuring method and limits for EMC on electric traction systems. This paper outlines the discussions in CISPR and IEC/TC9 on the standardization of EMC for the electric railway systems and introduces the international trends into the future.

Copyright (c) 2002 Railway Technical Research Institute