Draft Document - Live working - Minimum approach distances for AC systems in the voltage range 72.5 kV to 800 kV - A method of calculation (IEC 78/881/CD:2011)
Railway applications - Fixed installations - Electrical protective measures for working on or near an overhead contact line system and/or its associated return circuit; German version EN 50488:2021
European certified reference materials (EURONORM-CRMs) for the determination of the chemical composition of iron and steel products prepared under the auspices of the European Committee for Iron and Steel Standardization