SIS SS-EN 50 068-1991 变形钢外壳充气高压开关和控制设备

标准号：SIS SS-EN 50 068-1991
中文标准名称：变形钢外壳充气高压开关和控制设备
英文标准名称：Wrought steel enclosures for gas-filled high-voltage switchgear and controlgear
发布日期：1991/9/11 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：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 .