UNE-EN 62501:2009/A1:2014 Voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) power transmission - Electrical testing (Endorsed by AENOR in November of 2014.)
2018UNE-EN 62501:2009/A2:2017 Specifications for particular types of winding wires - Part 0-7: General requirements - Fully insulated (FIW) zero-defect enamelled round copper wire
2014UNE-EN 62501:2009/A1:2014 Voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) power transmission - Electrical testing (Endorsed by AENOR in November of 2014.)
2009UNE-EN 62501:2009 Voltage sourced converter (VSC) valves for high-voltage direct curent (HVDC) power transmission - Electrical testing (Endorsed by AENOR in December of 2009.)