家用及类似用途电器安全 第2-26部分：钟表特殊要求

[中文适用范围]： 本部分 IEC 60335 涉及额定电压不超过 250 V 的电动时钟的安全性，包括直流供电设备和电池供电设备。 注 101 - 本标准范围内的设备示例包括 - 闹钟； - 带有电动绕线机构的发条钟； - 包含非电机驱动装置的时钟。 注 参见图 101 和图 102 以了解本标准涵盖和不涵盖的时钟示例。 本标准尽可能处理家用电器对家庭内外所有人造成的常见危险。然而，一般情况下，本标准不考虑以下情况： - 由于身体、感官或智力能力不足或缺乏经验和知识而无法在没有监督或指导的情况下安全使用设备的个人（包括儿童）； - 儿童玩耍设备。 注 102 - 需注意以下事实： - 对于用于车辆、船舶或飞机上的设备，可能需要额外的要求； - 在许多国家，国家卫生当局、国家劳动保护当局和类似当局规定了额外的要求。 注 103 - 本标准不适用于 - 电池供电的时钟； - 专为工业用途设计的设备； - 用于特殊环境（如腐蚀性或爆炸性环境（粉尘、蒸汽或气体））的设备； - 具有其他功能的时钟，无论是否与时间指示结合，如主控时钟和烹饪炉、洗衣机等类似设备的计时器； - 用于“打卡”的时钟； - 仅包含电子电路的时钟（IEC 60065, IEC 62368-1）； - 手表。 [外文原描述]： IEC 60335-2-26:2024 CMV contains both the official standard and its commented version. The commented version provides you with a quick and easy way to compare all the changes between IEC 60335-2-26:2024 edition 5.0 and the previous IEC 60335-2-26:2002+AMD1:2008 CSV edition 4.1. Furthermore, comments from IEC TC 61 experts are provided to explain the reasons of the most relevant changes, or to clarify any part of the content. IEC 60335-2-26:2024 deals with the safety of electric clocks having a rated voltage not more than 250 V including direct current (DC) supplied appliances and battery-operated appliances. Examples of appliances that are within the scope of this standard are – alarm clocks; – spring-driven clocks with an electrically operated winding mechanism; – clocks incorporating driving means other than motors. As far as is practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons in and around the home. Attention is drawn to the fact that – for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements can be necessary; – in many countries additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour and similar authorities. This standard does not apply to – appliances intended exclusively for industrial purposes; – appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas); – clocks having other functions, whether or not in combination with time indication, such as master control clocks and timers for cooking ranges, washing machines and similar appliances; – clocks for "clocking-in" purposes; – clocks incorporating electronic circuits only (IEC 60065, IEC 62368-1); – watches. This fifth edition cancels and replaces the fourth edition published in 2002 and Amendment 1: 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) alignment with IEC 60335-1:2020; b) conversion of some notes to normative text (Clause 1); c) application of test probe 19 (8.1.1, 20.2, B.22.3, B.22.4); d) introduction of limits on the temperature rise of external accessible surfaces (Clause 11). This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its amendments unless that edition precludes it; in that case, the latest edition that does not preclude it is used. It was established on the basis of the sixth edition (2020) of that standard.