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.
Adjustable speed electrical power drive systems. General requirements. Rating specifications for a.c. power drive systems above 1000 V a.c. and not exceeding 35 kV— 118 стр.
Adjustable speed electrical power drive systems. General requirements. Rating specifications for low voltage adjustable frequency a.c. power drive systems— 94 стр.