標準號：SIS SS-EN 50 068-1991
中文標準名稱：變形鋼外殼充氣高壓開關(guān)和控制設(shè)備
英文標準名稱：Wrought steel enclosures for gas-filled high-voltage switchgear and controlgear
發(fā)布日期：1991/9/11 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：2. 1Type of Equ ip mentThis standard applies to fusion welded wrought steel enclosures pressurised with dry alr, lnert gases, fot example sulphur hexa-fluoride or nitrogen or a mixture of such gases, used in indoor or outdoor installations of hlgh-voltage switchgear and control-gear with rated voltages 72,5 kV and above, ?nere the gas is used principally for its dielectrlc and/or ar c-quenching proper-ties .The enclosures comprise parts of electrlcal equipment not neces-sarily limited to the following examples:Ci rcuit-Breakers Swltch-Disconnectors Disconnectors Earthing Switches Current Tr?ns formers Voltage Tr?ns formers Surge Arrestors Busbars and Connect lonsThe scope also covers pressurised components such as the centre chamber of live tank switchgear, gas-insula ted current transfor-mers, et c .