Historical
IEC 60545 Ed. 1.0 b:1976
Guide for commissioning, operation and maintenance of hydraulic turbines
Establishes suitable procedures for commissioning, operating and maintaining hydraulic turbines and associated equipment. Applies to impulse and reaction turbines of all types, and especially to large turbines directly coupled to electric generators. Also applies to pump-turbines when operating as turbines, and water conduits, gates, valves, drainage pumps, cooling-water equipment, generators, etc., where they cannot be separated from the turbine and its equipment.
International Electrotechnical Commission [iec]