01388nam 2200349 450 991013643260332120231206214115.01-5044-0338-X10.1109/IEEESTD.1972.7419180(CKB)3710000000601317(NjHacI)993710000000601317(EXLCZ)99371000000060131720231206d1972 uy 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierIEEE Std 421-1972 IEEE Standard Criteria and Definitions for Excitation Systems for Synchronous Machines /Institute of Electrical and Electronics EngineersNew York, N.Y. :IEEE,1972.1 online resource (20 pages) illustrationsThis document presents criteria, essential elements, and new and revised definitions for excitation systems as applied to electric utility synchronous machines with particular emphasis given to the application of solid-state devices and to terminology common to feedback control systems.IEEE Std 421-1972Electric machinery, SynchronousElectric machinery, Synchronous.621.3133NjHacINjHaclDOCUMENT9910136432603321IEEE Std 421-19723646826UNINA