高压开关设备和控制设备.第110部分:电感负载开关

[中文适用范围]： IEC 62271 的本部分适用于设计用于室内或室外安装@、在电压高于 1 000 V 的系统上以 50 Hz 和 60 Hz 频率运行、用于带或不带附加短路电流开断的感应电流开关的交流断路器职责。该标准适用于符合 IEC 62271-100 的用于切换高压电机电流和并联电抗器电流的断路器，以及用于切换 IEC 62271-100 所涵盖的高压电机电流的高压接触器。 106.对于根据 IEC 62271-1:2007 表 2a 和 2b@ 在额定电压下用于开关并联电抗器电流的断路器，不需要进行整个隔离距离的组合电压测试（参见 4.2）。本标准不考虑开关空载变压器@，即断开变压器磁化电流@。其原因如下： a) 由于变压器磁芯的非线性@，不可能在测试实验室中使用线性组件对变压器磁化电流的切换进行正确建模。使用可用的变压器@（例如测试变压器@）进行的测试仅对所测试的变压器有效，不能代表其他变压器； b) 如 IEC 62271-3061@ 中详述，该负载的特性通常不如任何其他感应电流开关负载严重。应该注意的是，这种负载可能会在变压器绕组内产生严重的过电压，具体取决于断路器的重新点火行为和变压器绕组谐振频率。短线故障、异相电流接通和分断以及容性电流开合不适用于用于开关并联电抗器或电动机的断路器。因此，这些职责不包含在本标准中。 IEC 62271-100:2008 的第 1.1 条在其他情况下也适用。 [外文原描述]： IEC 62271-110:2012 is applicable to a.c. circuit-breakers designed for indoor or outdoor installation, for operation at frequencies of 50 Hz and 60 Hz on systems having voltages above 1 000 V and applied for inductive current switching with or without additional short-circuit current breaking duties. The standard is applicable to circuit-breakers in accordance with IEC 62271-100 that are used to switch high-voltage motor currents and shunt reactor currents and also to high-voltage contactors used to switch high-voltage motor currents as covered by IEC 62271-106. For circuit-breakers applied to switch shunt reactor currents at rated voltages according to IEC 62271-1:2007 Tables 2a and 2b, combined voltage tests across the isolating distance are not required (refer to 4.2). This third edition cancels and replaces the second edition published in 2009 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - former Table 2 has been split into three new tables to conform with IEC 62271-100 and to address actual in service circuit configurations. - the criteria for successful testing has been revised to a more explicit statement (see 6.114.11a). - comments received in response to 17A/959/CDV and 17A/981/RVC have been addressed. The contents of the corrigendum of October 2012 have been included in this copy. This publication is to be read in conjunction with IEC 62271-1:2007 .