Specifies general safety requirements for electrical equipment intended for professional, industrial process, and educational use. It applies to 4 main groups of equipment: (a) Electrical test and measurement equipment such as signal generators, measurement standards, power supplies, transducers, transmitters, etc. (b) Electrical control equipment to control specific values by manual setting, programming or by input variables. (c) Electrical laboratory equipment to measure, indicate, monitor or analyse substances, including in vitro diagnostic (IVD) equipment. (d) Accessories for use with the above (for example, sample handling equipment). It has the status of a group safety publication in accordance with IEC Guide 104. The contents of the corrigenda of May 2002 and April 2003 have been included in this copy.