家用和类似固定安装的电气装置用箱和柜 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1000V交流和1500V直流、用于家庭或类似固定电气安装（室内或室外）的电气附件箱体、外壳及其部件（以下简称“箱体”和“外壳”）。符合本文件的箱体和外壳适用于环境温度通常不超过+40°C的场合，但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。根据箱体和外壳的分类，可适用于上述范围之外的其他温度。本文件旨在适用于IEC技术委员会23范围内的电气附件箱体和外壳。作为电气附件整体组成部分并为该附件提供对外部影响（如机械冲击、固体物体或水的侵入等）保护的箱体或外壳，由该附件的相关标准涵盖。本文件为声明具有IK代码的箱体和外壳提供了测试要求（见规范性附录B）。本文件也适用于IEC 60670-21、IEC 60670-22、IEC 60670-23和IEC 60670-24中修改的箱体和外壳类型。本文件不适用于：天花板灯座；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且不打算在这些系统之外安装的箱体、外壳及其部件。 [外文原描述]： 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.