Live working - Minimum approach distances for a.c systems in the voltage range 72,5 kV to 800 kV - A method of calculation (IEC 61472:2013) (english version)
Selection and dimensioning of high-voltage insulators intended for use in polluted conditions -- Part 2: Ceramic and glass insulators for a.c. systems (IEC TS 60815-2:2008) (english version)
Explosive atmospheres - Part 20-1: Material characteristics for gas and vapour classification - Test methods and data (ISO/IEC 80079-20-1:2017, including Cor 1:2018)
