標準號：SIS SS-EN 50 069-1991
中文標準名稱：鑄造焊接復合外殼及鍛造鋁合金的充氣高壓開關和控制設備
英文標準名稱：Welded composite enclosures ofcast and wrought aluminium alloys for gas-filled high-voltage switchgear and controlgear
發布日期：1991/6/5 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：2.1 Ty pe of equ ipmentThis standard applies to welded composlte enclosures of cast and wrought aluminium and aluminium alloy enclosures pressurized with dry air, inert gases, for example sulphur hexafluoride or nltro-gen or a mixture of such gases, used in indoor or outdoor installations of hlgh-voltage switchgear and controlgear with rated voltages of 72,5 kV and above, where the gas is used principally for its dielectrlc and/or ar c-quenching properties.The enclosures comprlse parts of electrical equipment not neces-sarily limited to the following examples:Ci rcult-breakers Switch-disconnectors D1 s connectors Earthing switches Current trtnsformers voltage transformers Surge arrestors Busbars and connectionsThe scope covers also pressurized components such as the centre-chamber of live tank switchgear and controlgear, gas-insu lated current transformers, etc.