scope:

This standard applies to, and provides the basis for, the definition, specification, performance analysis, and application of systems used for supei-visory control, data acquisition or automatic control, or both: in attended or unattended electric substations, including those associated with generating stations, and power utilization and conversion facilities.

This standard does not apply to electomechanical or static, protective-relaying equipment. (See ANSI/IEEE C37.90-1978 (R 1982) [li]," ANSI/IEEE C37.91-1985 [13], ANSI/IEEE ANSI/IEEE C37.90.1-1974 (R 1979) [12] , C37.93-1976 [14] , ANSI/IEEE C37.95-1973, (R 1980) [15], ANSI/IEEE C37.96-1976 (R 1981) [16], and ANSI/IEEE C37.97-1979 (R 1984) [17].