LST EN 62501-2009 Voltage sourced converter (VSC) valves for high-voltage direct curent (HVDC) power transmission - Electrical testing (IEC 62501:2009)
2009LST EN 62501-2009 Voltage sourced converter (VSC) valves for high-voltage direct curent (HVDC) power transmission - Electrical testing (IEC 62501:2009)