SIS SS 436 21 52-1989 铸造铝合金外壳充气高压开关和控制设备

标准号：SIS SS 436 21 52-1989
中文标准名称：铸造铝合金外壳充气高压开关和控制设备
英文标准名称：Cast aluminium alloy enclosures for gas-filled high-voltage switchgear and controlgear
发布日期：1989/12/6 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：This standard applies to cast aluminium alloy enclo-sures pressurized with dry air, inert gases, for example sulphur hexafluoride or nitrogen or a mixture of such gases, used in indoor or outdoor installations of high-voltage switchgear and controlgear with rated voltages above 1 kV, where the gas is used principally for its dielectric and/or arc-quenching properties.The enclosures comprise parts of electrical equipment not necessarily limited to the following examples:Circuit-breakers Switch-disconnectors Disconnectors Earthing switches Current transformers Voltage transformers Surge arrestors Busbars and connectionsThe scope also covers pressurized components such as the centre chamber of live tank switchgear, gas-insulated current transformers, etc. .