Electrical relays; part 22: electrical disturbance tests for measuring relays and protection equipment; section 4: fast transient disturbance test; identical with IEC 60255-22-4:1992
Acoustics; determination of sound power levels of noise sources; precision methods for broad-band sources in reverberation rooms (ISO 3741:1988); german version EN 23741:1991— 16 стр.
Acoustics; determination of sound power levels of noise sources; precision methods for discrete-frequency and narrow-band sources in reverberation rooms (ISO 3742:1988); german version EN 23742:1991— 11 стр.
Measuring relays and protection equipment - Protection communication interfacing - Part 1: General (IEC 61733-1:1995); German version EN 61733-1:1996— 12 стр.
Generic specifications: solid state all-or-nothing relays of assessed quality; generic data and methods of test; german version EN 117000:1991— 61 стр.
