Terminology for high-voltage direct current (HVDC) transmission (IEC 60633:1998 + A1:2009 + A2:2015); German version EN 60633:1999 + A1:2009 + A2:2015— 39 стр.
Thyristor valves for high voltage direct current (HVDC) power transmission - Part 1: Electrical testing (IEC 60700-1:1998 + A1:2003 + A2:2008) (english version)