勘误表 1 — 高压开关设备和控制设备 — 第 202 部分：额定电压高于 1 kV 并高达 52 kV 的交流预装式变电站

[中文适用范围]： IEC 62271-202:2022规定了封闭式高压预装式变电站的使用条件、额定特性、一般结构要求和试验方法。这些预装式变电站通过电缆连接到交流高压网络，工作电压高达52kV（含），电源频率高达60Hz（含）。它们可以从内部（步入式）或从外部（非步入式）手动操作。它们设计用于室外安装在公共通道和提供人员保护的位置。第三版取消并取代了 2014 年发布的第二版。该版本构成技术修订。相对于前一版本，该版本包括以下重大技术变化：整个文件内容和结构均在适当考虑 IEC 62271-1:2017 的情况下进行审查；修改标题和范围以包括高压开关设备预装式变电站；将 CEADS 纳入 MV/LV 预装式变电站的可能组成部分；在7.2.101中，现在考虑了周围元件对高压开关设备和控制设备以及非金属封闭或无接地屏蔽的高压互连等高压部件介电性能的可能影响；新的信息丰富的附录 G 包含测试程序，用于评估太阳辐射对外壳内温度的影响以及如何应用它；新的资料性附件 H，用于适当考虑电子设备的安装条件；预装式变电站的额定功率现定义为三参数额定值。见 5.101.1；引入了 6.104.4 中预装式变电站检修门的最小尺寸和 6.105.3 中操作通道自由高度的最小尺寸；必要时修订/澄清了连续电流（温升）测试方法；图 D.1 显示了外壳内矿物油浸式电力变压器的负载系数，已得到修正。 [外文原描述]： IEC 62271-202:2022 specifies the service conditions, rated characteristics, general structural requirements and test methods of enclosed high-voltage prefabricated substations. These prefabricated substations are cable-connected to AC high-voltage networks with an operating voltage up to and including 52 kV and power frequencies up to and including 60 Hz. They can be manually operated from inside (walk-in type) or from outside (non-walk-in type). They are designed for outdoor installation at locations with public accessibility and where protection of personnel is provided. This third edition cancels and replaces the second edition published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: the whole document contents and structure are reviewed with due consideration of IEC 62271-1:2017; modification of the title and scope to include high-voltage switchgear prefabricated substations; inclusion of CEADS as a possible component of MV/LV prefabricated substation; in 7.2.101, the possible influence of surrounding elements on the dielectric performance of high-voltage components as high-voltage switchgear and controlgear and high-voltage interconnections non-metal-enclosed or without earthed screen are now considered; new informative Annex G with testing procedure to evaluate the impact of solar radiation in temperatures inside the enclosure and how to apply it; new informative Annex H for appropriate consideration of installation conditions of electronic equipment; the rated power of a prefabricated substation is now defined as a three-parameter rated value. See 5.101.1; minimum dimensions for access doors to the prefabricated substation in 6.104.4 and for free height of operation aisle in 6.105.3 have been introduced; continuous current (temperature rise) test methods have been revised/clarified where necessary; Figure D.1, which shows the mineral-oil-immersed power transformer load factor inside the enclosure, has been corrected.