IEC 60670-21:2024 家用和类似用途固定式电气装置用电气附件盒和外壳第21部分:带悬挂装置的盒和外壳的特殊要求

标准编号：IEC 60670-21:2024

中文名称：家用和类似用途固定式电气装置用电气附件盒和外壳第21部分:带悬挂装置的盒和外壳的特殊要求

英文名称：Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 21: Particular requirements for boxes and enclosures with provision for suspension means

发布日期：2024-12-18

标准范围

IEC 60670-21:20 24适用于额定电压不超过1 000 V AC和1 500 V DC的电气附件的箱体、外壳和外壳部件（以下简称“箱体”和“外壳”），用于室内或室外的家用或类似固定电气装置。符合本文件的箱体和外壳适用于通常不超过+40°C的环境温度，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摄氏度。根据箱和外壳的分类，可以应用上述范围之外的其他温度。本文件适用于带有悬挂装置的天花板和墙壁安装箱和外壳。这第二版取消并取代了2004年出版的第一版和修正案1:2016.本版构成技术修订。与上一版相比，此版本包括以下重大技术变更:a)完全修订悬架装置的试验和要求。

IEC 60670-21:2024 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 boxes and enclosures for ceiling and wall mounting with provision for suspension means. This second edition cancels and replaces the first edition published in 2004 and Amendment 1:2016. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Complete revision of the tests and requirements of the suspension means.

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