IEC 62271-1:20 7+A1:2021适用于设计用于室内和/或室外安装、工作频率高达（含）60 Hz、额定电压高于1 000 V的交流开关设备和控制设备。 本文件适用于所有高压开关设备和控制设备，除非相关IEC标准中对特定类型的开关设备和控制设备另有规定。 这第二版取消并取代了2007年出版的第一版和修正案1:20 11。本版构成技术修订版。 与上一版相比，此版本包括以下重大技术变更: 新编号符合ISO/IEC指令第2部分（2016）和IEEE标准。C37.100.1。 4.1.2 a)室内开关设备的正常使用条件限于40°C至-5°C。 4.1.3 a)室外开关设备的正常使用条件限于40°C至-25°C的一个范围。 4.2.2:1 000 m以上的海拔修正系数采用IEC 60071-2:19 96的规范。 5.2.2:范围I，额定电压40.5 kV增加系列I表1；表2和表4根据美国国家委员会的建议进行了更新。 6.8:增加了与IEC 60447“人机界面”建议一致的手动操作执行器的新子条款。 7.2.6.1:根据IEC 17/1026/RQ的结果，插入关于开式真空灭弧室初始脉冲的措辞。 7.3:将无线电干扰电压的要求改为额定电压等级245千伏及以上，而不是123千伏及以上。这一变化是基于该标准维护团队中公用事业代表报告的阳性测试和服务经验。7.5.6，表14: a.引入了“OG”（氧化气体）或“NOG”（非氧化气体）中零件的区别，取代了以前的“空气”和“SF6”； b.根据IEC TR 60943，增加了表14第1组和第2组中某些部件的允许温升； c.参考IEC指南117，扩展了可触及表面类别的允许温升定义。另见7.5.6.2第15点。 7.5.6.2:第5点作修订，澄清“OG”和“NOG”气体的引入。 7.10:部分试验因IEC 60068系列相关试验标准被修改或撤回而被删除。 7.11.3:修改X射线检测的验收标准，以识别更高等级的真空断路器。 删除原资料性附件H:腐蚀，内容为 IEC TR 62271-306。 新附件J（资料性）:增加了延长型式试验有效性的资料性指南 新的附件K（资料性）:增加了关于接触污染的资料性指南 2021年5月解释表1的内容已包含在本副本中。

IEC 62271-1:2017+A1:2021 applies to AC switchgear and controlgear designed for indoor and/or outdoor installation and for operation at service frequencies up to and including 60 Hz and having rated voltages above 1 000 V.
This document applies to all high-voltage switchgear and controlgear except as otherwise specified in the relevant IEC standards for the particular type of switchgear and controlgear.
This second edition cancels and replaces the first edition published in 2007 and Amendment 1:2011. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
New numbering in accordance with ISO/IEC directives, Part 2 (2016) and IEEE Std. C37.100.1.
4.1.2 a) The normal service condition for indoor switchgear is limited to one range of 40 °C to -5 °C.
4.1.3 a) The normal service condition for outdoor switchgear is limited to one range of 40 °C to -25 °C.
4.2.2: The specifications from IEC 60071-2:1996 are adopted for altitude correction factors above 1 000 m.
5.2.2: Range I, the rated voltage of 40,5 kV is added Series I Table 1; Table 2 and Table 4 are updated on recommendation of the US National Committee.
6.8: New subclause added for manual operated actuators consistent with “Man Machine Interface” recommendations of IEC 60447.
7.2.6.1:Insert the wording regarding preliminary impulses across open vacuum interrupters according to the result of IEC 17/1026/RQ.
7.3: Changed the requirement for radio interference voltage to a rated voltage level of 245 kV and above, instead of 123 kV and above. This change is based on reported positive test and service experience of utility representatives in the maintenance team of this standard.
7.5.6, Table 14:
a. Introduced the distinction of parts in “OG” (oxidizing gas) or in “NOG” (not oxidizing gas) replacing the former “air” and “SF6”;
b. Increased the allowable temperature rise for some parts in groups 1 and 2 of Table 14 according to IEC TR 60943;
c. Expanded the definition of allowable temperature rise for categories of accessible surfaces with reference to IEC Guide 117. See also Point 15 in 7.5.6.2.
7.5.6.2: Point 5 is modified to clarify the introduction of “OG” and “NOG” gas.
7.10: Some tests were removed because the relevant test standards of IEC 60068 series were modified or withdrawn.
7.11.3: The acceptance criteria for X-radiation testing are modified to recognize higher rated vacuum interrupters.
Former informative Annex H: Corrosion is deleted, the content is part of
IEC TR 62271-306.
New Annex J (informative): Added informative guidelines for the extension of validity of type tests
New Annex K (informative): Added informative guidelines about exposure to pollution
The contents of the Interpretation Sheet 1 of May 2021 have been included in this copy.