IEC 62236-5:2008 applies to emission and immunity aspects of EMC for fixed power supply installations and electrical and electronic apparatus and systems intended to be used in these installations. This includes the power feed to the apparatus, the apparatus itself with its protective control circuits, trackside items such as switching stations, power autotransformers, booster transformers, substation power switchgear and power switchgear to other longitudinal and local supplies. The main change with respect to the previous edition deals with the requirements for the radiated immunity test.