00854nam a22002291i 450099100070307970753620030225122700.0021024s1984 it |||||||||||||||||ita b12042882-39ule_instARCHE-013268ExLDip.to Filologia Ling. e Lett.itaA.t.i. Arché s.c.r.l. Pandora Sicilia s.r.l.Modesti, Giovanni449599Puglia anni '50 :cronache /Giovanni ModestiBari :[s.n.],1984100 p. ;20 cmL'Arneide vicenda salentina.b1204288202-04-1401-04-03991000703079707536LE008 LLI IV B 7812008000277338le008-E0.00-l- 00000.i1233537x01-04-03Puglia anni '50144060UNISALENTOle00801-04-03ma -itait 0102056nam 2200349 450 991013577530332120231206190617.00-7381-3148-210.1109/IEEESTD.1989.114391(CKB)3780000000089272(NjHacI)993780000000089272(EXLCZ)99378000000008927220231206d1989 uy 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierANSI/IEEE Std C37.38-1989 IEEE Standard for Gas Insulated, Metal-Enclosed Disconnecting, Interrupter, and Grounding Switches /Institute of Electrical and Electronics EngineersPiscataway, NJ :IEEE,1989.1 online resource (18 pages)Requirements for switches rated 72.5 kV and above, intended for use in metal-enclosed, gas-insulated substations, are presented. These switches are characterized by grounded, leak-tight metal enclosures that are filled with a gas (most commonly sulfur hexafluoride, SF6) at some pressure above atmospheric. Live parts are contained within the housing and insulated therefrom by the gas and by suitable solid insulation that supports the live parts in their proper position. Gas-insulated switches are normally electrically connected to and structurally joined to other gas-insulated components, such as buses, gas-to-air bushings, circuit breakers, instrument transformers, cable terminations, etc. Switches may be manually or power operated. Service conditions, ratings, supporting structures, and nameplates are covered. Testing of disconnecting and grounding switches is covered.ANSI/IEEE Std C37.38-1989: IEEE Standard for Gas-Insulated, Metal-Enclosed Disconnecting, Interrupter, and Grounding SwitchesElectric switchgearElectric switchgear.621.317NjHacINjHaclDOCUMENT9910135775303321ANSI2072434UNINA