家用和类似固定电气安装的电气附件的箱盒和外壳 第22部分：与箱盒和外壳相关的特殊要求

[中文适用范围]： 本部分IEC 60670适用于额定电压不超过1000V交流电和1500V直流电的家用或类似固定电气安装的电气附件箱、外壳和外壳部件（以下简称“箱”和“外壳”），适用于室内或室外。 符合本文件的箱和外壳适用于环境温度通常不超过+40°C，但在24小时内的平均温度不超过+35°C，环境空气温度下限为-5°C的情况。 其他超出上述范围的温度可根据箱和外壳的分类适用。 本文件适用于连接箱或分接箱或两者。 除非另有说明，本文件中“箱”一词也适用于“外壳”。 本文件旨在适用于IEC技术委员会23范围内的电气附件的箱和外壳。 作为电气附件整体部分并提供对外部影响（例如机械冲击、固体物体或水的进入等）的防护的箱或外壳，由该附件的相关标准涵盖。 本文件提供了声明为IK代码的箱和外壳的测试要求，参见附录B（规范性）。 本文件也适用于IEC 60670-21、IEC 60670-22、IEC 60670-23和IEC 60670-24中修改的箱和外壳类型。 本文件不适用于： - 天花板玫瑰； - 灯具支撑耦合器； - 专门设计用于符合IEC 61084的电缆管道和管道系统且不打算在这些系统之外安装的箱、外壳和外壳部件。 [外文原描述]： IEC 60670-22:2024 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user with a comprehensive content of the Standard. IEC 60670-22:2024 EXV includes the content of the references made to IEC 60670-1:2024. IEC 60670-22:2024 applies to boxes, enclosures and parts of enclosures (hereafter called "boxes" and "enclosures") for electrical accessories with a rated voltage not exceeding 1 000 V AC and 1 500 V DC intended for household or similar fixed electrical installations, either indoors or outdoors. Boxes and enclosures complying with this document are suitable for use at ambient temperatures not normally exceeding +40 °C, but their average over a period of 24 h does not exceed +35 °C, with a lower limit of the ambient air temperature of −5 °C. Other temperatures outside the above range can apply according to the classification of the boxes and the enclosures. This document applies to junction connecting boxes or tapping connecting boxes or both. This second edition cancels and replaces the first edition published in 2003 and Amendment 1:2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) addition of cable joints as a new type of box with the related tests and requirements; b) addition of tests and requirements for boxes and enclosures exposed to direct sunlight with the related Annex CC; c) addition of connecting boxes and enclosures having encapsulation capability as a new type of boxes with the related tests, requirements and related Annex DD.