Describes a.c. switchgear and controlgear, designed for indoor and outdoor installation and operation at service frequencies up to and including 60 Hz on systems having voltages above 1000 V, and all high-voltage switchgear and controlgear except as otherwise specified in the relevant IEC standards for the particular types. Includes sections on normal and special service conditions, definitions, rating, design and construction, type tests, routine tests, guide to the selection of switching devices for service, information to be given with enquiries, tenders and orders and rules for transport, storage, erection and maintenance.