NF C53-701/A2*NF EN 62501/A2:2017 Voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) power transmission - Electrical testing
2017NF C53-701/A2*NF EN 62501/A2:2017 Voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) power transmission - Electrical testing