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.
Methods of measurement for equipment used in digital microwave radio transmission systems; part 1: measurements common to terrestrial radio-relay systems and satellite earth stations; section one: general (IEC 60835-1-1:1990); German version EN 60835-1-1:1992— 10 стр.