Historical
IEC 60694 Ed. 2.2 b:2002
Common specifications for high-voltage switchgear and controlgear standards
Applies, unless otherwise specified in relevant IEC standards, to all a.c. high-voltage switchgear and controlgear designed for indoor or outdoor installation, for operation at service frequencies up to and including 60 Hz, on systems having voltages above 1000 V.
International Electrotechnical Commission [iec]