Electromechanical switches for use in electrical and electronic equipment - Part 1: Generic specification (IEC 61020-1:2009); German version EN 61020-1:2009— 73 стр.
Medical electrical equipment - Part 1: General requirements for basic safety and essential performance (IEC 60601-1:2005 + Cor.:2006 + Cor.:2007 + A1:2012) (english version)
Adjustable speed electrical power drive systems -- Part 5-1: Safety requirements - Electrical, thermal and energy (IEC 61800-5-1:2007 + A1:2016) (english version)