高压开关设备和控制设备.第2部分:额定电压72.5kV及以上的地震特性

[中文适用范围]： IEC 62271的本部分适用于室内和室外安装的额定电压72.5 kV及以上交流电的所有开关设备及其组件，包括其刚性连接到地面的支撑结构。如果开关设备及其组件不是地面安装的，例如在建筑物中，则应用条件取决于用户和制造商之间的协议。开关设备及其组件的抗震鉴定考虑了直接安装或作为单独结构安装的任何辅助和控制设备。本标准提供了额定电压为 72.5 kV 及以上的地面安装开关设备及其组件的抗震鉴定程序。开关设备及其组件的抗震鉴定仅根据要求进行。该标准规定了地震严重程度，并提供了可用于证明需要抗震鉴定的高压开关设备及其组件性能的方法选择。 [外文原描述]： Applies to all switchgear and their assemblies for alternating current of rated voltages of 72,5 kV and above for indoor and outdoor installation, including their supporting structure rigidly connected to the ground. Where switchgear and their assemblies are not ground mounted, e.g. in a building, conditions for application are subject to agreement between users and manufacturers. The seismic qualification of the switchgear and their assemblies take into account any auxiliary and control equipment either directly mounted or as a separate structure. This standard provides procedures to seismically qualify ground mounted switchgear and their assemblies for rated voltages of 72,5 kV and above. The seismic qualification of the switchgear and their assemblies is only performed upon request. This standard specifies seismic severity levels and gives a choice of methods that may be applied to demonstrate the performance of high-voltage switchgear and their assemblies for which seismic qualification is required.