02278nam 2200409 450 991013515780332120231207090427.00-7381-4421-510.1109/IEEESTD.1987.81029(CKB)3780000000090470(NjHacI)993780000000090470(EXLCZ)99378000000009047020231207d1987 uy 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierIEEE Std 86-1987 IEEE Recommended Practice: Definitions of Basic Per-Unit Quantities for AC Rotating Machines /Institute of Electrical and Electronics Engineers[Place of publication not identified] :IEEE,1987.1 online resourceThe proper selection of base values is fundamental to the usefulness of a per-unit system. Although per-unit quantities have been used for many years by designers of rotating machinery, the base quantities were not standardized, and it was necessary to define them in each publication. A working group of the Rotating Machinery Committee was created to propose a set of standard definitions. In 1961, a proposed standard was published for trial use. A critical review of that proposed standard resulted in ANSI/IEEE Std 86-1975. Recently, systems analysts and some designers of rotating electrical machinery have found it useful to have a single generic model for all types of machines. Therefore, alternate per-unit definitions, using input voltamperes as base power for induction motors, have been included in this new revision, as well as an example of an induction generator.86-1987 - IEEE Recommended PracticeIEEE Std 86-1987: IEEE Recommended Practice: Definitions of Basic Per-Unit Quantities for AC Rotating MachinesElectric generatorsAlternating currentElectric generatorsElectric motorsElectric generatorsAlternating current.Electric generators.Electric motors.621.317NjHacINjHaclDOCUMENT9910135157803321IEEE Std 86-19872573325UNINA01323nam0 22003251i 450 UON0052176420240111080027.58920240111d1971 |0itac50 baitaIT|||| ||||| Storia e coscienza di classeGyörgy LukácsMilanoSugarCo1971LII, 418 p.21 cmDonazione prof.ssa Amalia SignorelliIT-UONSI F. Signorelli5 U2588UON00372032 Geschichte und Klassenbewusstsein14086Lotta di classeUONC039805FIMarxismoUONC008444FIPROLETARIATO STORIAUONC034486FIITMilanoUONL000005320.5322Scienza politica (Politica e governo). Marxismo-leninismo20LukàcsGyörgyUONV112594SugarUONV265663650LUKACS, GeorgLukàcs, GyörgyUONV227144ITSOL20250829RICASIBA - SISTEMA BIBLIOTECARIO DI ATENEOUONSIUON00521764SIBA - SISTEMA BIBLIOTECARIO DI ATENEOSI F. Signore5 U 2588 SI 49313 5 Donazione prof.ssa Amalia SignorelliGeschichte und klassenbewusstsein14086UNIOR