家用和类似用途固定电气设施附件外壳.第24部分:家庭保护装置和类似耗电装置外壳的详细要求

[中文适用范围]： 本部分 IEC 60670 适用于额定电压不超过 400 V 且总进线负载电流不超过 125 A 的家用和类似固定电气装置中，用于容纳保护器件和其他耗散功率电气设备的 enclosure 及其部件。这些 enclosure 旨在安装在非专业人员可接触的地方。它们旨在由专业人员（安装人员）在现场与电气设备集成。它们旨在安装在预期短路电流不超过 10 kA 的地方，除非它们由限流保护器件保护，且切断电流不超过 17 kA。符合本标准的 enclosure 在安装后适用于环境温度通常不超过 25 °C，但偶尔在 24 小时内达到 35 °C，最高 40 °C，最低 -5 °C 的场合。作为电气附件的一部分并提供对外部影响（如机械冲击、固体物体或水的侵入）保护的 enclosure，由该附件的相关标准覆盖。本标准不适用于 IEC 60439 或 IEC 61439 系列标准中定义的低压开关设备和控制设备组装（ASSEMBLY），也不适用于可能作为配电板一部分的主入口面板。注 1：主入口面板是由配备有电表和/或主进线装置的面板或 enclosure 组成的集合。主入口面板符合其适当的标准或当地供应商的要求（如有）。注 2：在以下国家，本标准不能用于由普通人控制的额定高达 100 A 的 230 V 单相供电安装。机械和电气设备集成到 enclosure 中必须通过符合 IEC 60439-3 [英国标准 EN 60439-3] 来验证：英国。注 3：在以下国家，本标准仅可用于带有根据附件 A 说明的 GP enclosure。对于其他类型的 enclosure，机械和电气设备集成到 enclosure 中必须通过符合 DS EN 60439-3 来验证：丹麦。 [外文原描述]： IEC 60670-24:2011 applies to enclosures and parts of them for housing protective devices and other power dissipating electrical equipment intended to be used with a rated voltage not exceeding 400 V and a total incoming load current not exceeding 125 A for household and similar fixed electrical installations. This second edition cancels and replaces the first edition published in 2005 and constitutes a technical revision. The following major changes from the first edition are introduced: - new definition for basic, general purpose enclosures (GP enclosure) and enclosures for pre-determined equipment (PD enclosure); - new classification and marking for general purpose enclosure (GP enclosure) and enclosure for pre-determined equipment (PD enclosure); - required data for instruction sheet and/or documentation according to the type of enclosure; - adequate space to allow mounting and connection of the accessories (fully equipped) as declared by the manufacturer; - requirements for general purpose enclosure (GP enclosure) as in Clause 101; - requirements for enclosure for pre-determined equipment (PD enclosure) as in Clause 102; - instructions to be given by the manufacturer of the GP enclosure to the installer how to integrate accessories and example of calculation given in Annex AA; - instructions to be given by the manufacturer of the PD enclosure to the installer how to integrate accessories given in Annex BB. This publication is to be read in conjunction with IEC 60670-1:2002 .