标准摘要
[中文适用范围]: 本部分IEC 62271适用于设计用于室内或室外安装的交流开关设备,用于在50 Hz和60 Hz频率下运行,系统电压超过1000 V,并应用于感性电流切换。它适用于开关设备(包括符合IEC 62271-100的断路器),用于切换高压电动机电流和并联电抗器电流,以及用于切换高压电动机电流的高压接触器(如IEC 62271-106所述)。 切换空载变压器(即断开变压器磁化电流)不在本文档中考虑。原因如下: a) 由于变压器铁芯的非线性,无法在测试实验室中使用线性组件正确模拟变压器磁化电流的切换。使用可用变压器(如测试变压器)进行的测试仅对测试的变压器有效,不能代表其他变压器。 b) 如IEC TR 62271-306中所述,此任务特性通常比其他感性电流切换任务要轻。根据开关设备的重新点燃行为和变压器绕组共振频率,这种任务可能在变压器绕组内产生严重的过电压。 注1:从变压器高压侧切换第三级电抗器不在本文档范围内。 注2:通过中性电抗器接地的并联电抗器的切换不在本文档范围内。然而,根据本文档的测试结果应用于中性电抗器接地电抗器(四腿电抗器方案)的切换在IEC TR 62271-306中讨论。 [外文原描述]: IEC 62271-110:2023 is applicable to AC switching devices 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. It is applicable to switching devices (including 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. This fifth edition cancels and replaces the fourth edition published in 2017. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: references to IEC 62271-100 and IEC 62271-106 have been updated to the latest editions.
英文名称High-voltage switchgear and controlgear - Part 110: Inductive load switching