家庭和类似固定电气安装用的电器附件的箱盒及其配件 第1部分：通用要求

[中文适用范围]： 本部分 IEC 60670 适用于额定电压不超过 1000 V 交流和 1500 V 直流的电气附件用盒子、外壳和外壳部件（以下称为“盒子和外壳”），用于家庭或类似固定电气安装，室内或室外均可。 符合本文件的盒子和外壳适用于环境温度通常不超过 +40°C 的情况，但其 24 小时内的平均值不超过 +35°C，环境空气温度的下限为 -5°C。 安装期间的温度可能超出上述温度范围，具体取决于盒子和外壳的分类。 根据盒子和外壳的分类，可以适用超出上述范围的其他温度。 本文件适用于 IEC 技术委员会 23 范围内的电气附件用盒子和外壳。 本标准可作为其他 IEC 技术委员会和分委员会的参考文件。 作为电气附件整体一部分并提供对该附件免受外部影响（例如机械冲击、固体物体或水的进入等）保护的盒子或外壳，由该附件的相关标准涵盖。 本文件提供了声明具有 IK 代码的盒子和外壳的测试要求，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 中修改的盒子和外壳类型。 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 的电缆槽和管道系统的盒子和外壳及其部件，且不打算在这些系统之外安装的盒子和外壳。 [外文原描述]： IEC 60670-1:2024 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 60670-1:2024 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 is intended to apply to boxes and enclosures for electrical accessories within the scope of IEC technical committee 23. This third edition cancels and replaces the second edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the classifications, markings and tests of boxes and enclosures for use and installation in ambient temperature below normal use are modified; b) the test for the durability of markings is modified; c) a test is added for fixing screws protected by caps; d) a normative annex is added to specify the tests applied to boxes and enclosures declared with an IK code; e) requirements for the resistance to abnormal heat and fire of internal parts not necessary to retain current carrying parts are specified.