高压开关设备和控制设备.第104部分:52kV及以上的额定电压用交流开关

[中文适用范围]： IEC 62271的本部分适用于额定电压52 kV及以上@具有接通和分断电流额定值@的室内和室外安装@以及额定频率高达（包括60 Hz）的三极交流开关。本标准也适用于这些开关的操作装置及其辅助设备。注 1：本标准涵盖气体绝缘开关设备的开关。注 2：IEC 62271-102 还涵盖具有隔离功能并称为隔离开关的开关。注 3：接地开关不属于本标准的范围。 IEC 62271-102 涵盖了构成开关组成部分的接地开关。该标准的主要目标是制定输配电系统中使用的开关的要求。用于此应用的通用开关的设计符合以下服务应用： ?C 连续承载额定正常电流； ?C 承载规定时间内的短路电流； ?主要有源负载的C切换； ?空载变压器的C切换； ?C 切换空载电缆@架空线路或母线的充电电流；闭环电路的C切换； ?C产生短路电流。该标准的另一个目标是制定输配电系统中使用的有限用途和特殊用途交换机的要求。有限用途交换机应符合上述一项或多项服务应用。专用开关可符合上述一种或多种服务应用，并且@此外@应适用于以下一种或多种应用： ?C 开关单个电容器组； ?C 切换背靠背电容器组； ?C 切换并联电抗器，包括从变压器初级侧切换的二次或三次电抗器； ?需要增加操作周期数的C应用； ?C 在中性线非有效接地系统中接地故障条件下的切换。 [外文原描述]： IEC 62271-104:2009 applies to three-pole alternating current switches for rated voltages 52 kV and above, having making and breaking current ratings, for indoor and outdoor installations, and for rated frequencies up to and including 60 Hz. This standard is also applicable to the operating devices of these switches and to their auxiliary equipment. The main object of this standard is to establish requirements for switches used in transmission and distribution systems. General-purpose switches for this application are designed to comply with the following service applications: - carrying rated normal current continuously; - carrying short-circuit currents for a specified time; - switching of mainly active loads; - switching of no-load transformers; - switching of the charging current of unloaded cables, overhead lines or busbars; - switching of closed-loop circuits; - making short-circuit currents. A further object of this standard is to establish requirements for limited-purpose and special- purpose switches used in transmission and distribution systems. Limited-purpose switches shall comply with one or more of the service applications indicated above. Special-purpose switches may comply with one or more of the service applications indicated above and, in addition, shall be suitable for one or more of the following applications: - switching single capacitor banks; - switching back-to-back capacitor banks; - switching shunt reactors including secondary or tertiary reactors switched from the primary side of the transformer; - applications requiring an increased number of operating cycles; - switching under earth fault conditions in non-effectively earthed neutral systems. This standard cancels and replaces IEC 60265-2:1988. The major changes with respect to IEC 60265-2 are as follows: - alignment with IEC 62271-1 and IEC 62271-100; - requirements for capacitive current switching aligned with those in IEC 62271-100: classes C1 and C2 are introduced. This publication is to be read in conjunction with IEC 62271-1:2007 , IEC 62271-100:2008 , IEC 62271-102:2001 and IEC 62271-110:2005 .