01046nam 2200325 450 991032665720332120231214153710.01-5044-5685-8(CKB)4100000008419317(NjHacI)994100000008419317(EXLCZ)99410000000841931720231214d2019 uy 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierIEEE Std C37.20.9-2019 IEEE Standard for Metal-Enclosed Switchgear Rated 1 kV to 52 kV Incorporating Gas Insulating Systems /Institute of Electrical and Electronics Engineers[Place of publication not identified] :IEEE,2019.1 online resource (134 pages)IEEE Std C37.20.9-2019Insulation (Heat)Insulation (Heat)693.832NjHacINjHaclDOCUMENT9910326657203321IEEE Std C37.20.9-20193649161UNINA