IEC 61326-2-3:2012-Electrical equipment for measurement, IEC 62501:2009/AMD1:2014-Amendment 1-Voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) power transmission-Electrical testing, IEC 60601-1:2005/AMD2:2020-Amendment 2-Medical electrical equipment-Part 1: General requirements for basic safety and essential performance