家用和类似用途电器 安全 第2-40部分：电气热泵、空气调节器和除湿机的特定要求

[中文适用范围]： 本部分IEC 60335涉及电动热泵、卫生热水热泵和空调器的安全，包括电动机压缩机以及水力风机盘管装置、除湿器（带或不带电动机压缩机）、热电热泵和部分单元，其最大额定电压不超过单相设备300V和多相设备600V，包括直流供电设备和电池供电设备。 非家用但可能对公众造成危险的设备，如商店、轻工业和农场使用的设备，也在本标准的范围内。 上述设备可以由一个或多个工厂制造的组件组成。如果提供多个组件，则这些组件一起使用，要求基于匹配组件的使用。 本标准不考虑除A1、A2L、A2和A3组以外的制冷剂，如ISO 817所定义。易燃制冷剂仅限于基于ISO 817中规定的WCF（最坏情况配方）摩尔质量大于或等于42kg/kmol的制冷剂。 本标准尽可能处理正常使用中设备的常见危险，并假设安装、维护、退役和处置由合格人员安全处理，避免制冷剂意外释放。然而，本标准未规定确保人员在安装、维护和处置期间能力的标准。处置期间的安全要求未在本标准中规定。 补充加热器或其单独安装的规定也在本标准的范围内，但仅限于设计为设备一部分且控制集成在设备中的加热器。 本标准不适用于： - 与加热和冷却设备一起使用的加湿器（IEC 60335-2-88）； - 专为工业加工设计的设备； - 用于特殊条件（如腐蚀性或爆炸性环境）的设备。 [外文原描述]： IEC 60335-2-40:2024 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 60335-2-40:2024 edition 8.0 and the previous IEC 60335-2-40:2022 edition 7.0. Furthermore, comments from IEC SC 61D experts are provided to explain the reasons of the most relevant changes, or to clarify any part of the content. IEC 60335-2-40:2024 deals with the safety of electric heat pumps, sanitary hot water heat pumps and air conditioners, incorporating motor-compressors as well as hydronic fan coils units, dehumidifiers (with or without motor-compressors), thermoelectric heat pumps and partial units, their maximum rated voltage being not more than 300 V for single phase appliances and 600 V for other appliances including direct current (DC) supplied appliances and battery-operated appliances. Appliances not intended for normal household use but which nevertheless can be a source of danger to the public, such as appliances intended to be used by laypersons in shops, in light industry and on farms, are within the scope of this standard. The appliances referenced above can consist of one or more factory-made assemblies. If provided in more than one assembly, the separate assemblies are used together, and the requirements are based on the use of matched assemblies. A definition of ‘motor-compressor’ is given in IEC 60335-2-34, which includes the statement that the term motor-compressor is used to designate either a hermetic motor-compressor or semi-hermetic motor-compressor. Requirements for containers intended for storage of the heated water included in sanitary hot water heat pumps are, in addition, covered by IEC 60335-2-21. This standard does not take into account refrigerants other than group A1, A2L, A2 and A3 as defined by ISO 817. Flammable refrigerants are limited to those of a molar mass of more than or equal to 42 kg/kmol based on WCF (worst case formulation) as specified in ISO 817. As far as practical, this standard deals with common hazards presented by appliances that are encountered in normal use and assumes that installation, servicing, decommissioning, and disposal are safely handled by competent persons and accidental release of refrigerants is avoided. However, it does not specify the criteria to ensure competence of persons during installation, servicing and disposal. Safety requirements during disposal are not specified in this standard. Annex HH provides informative requirements on competence of personnel. Criteria for competence of personnel for the purpose of certification schemes can be found in ISO 22712. Unless specifications are covered by this standard, including the annexes, requirements for refrigerating safety are covered by: – ISO 5149-1:2014, ISO 5149-1:2014/AMD1:2015, and ISO 5149-1:2014/AMD2:2021, – ISO 5149-2:2014 and ISO 5149-2:2014/AMD1:2020, – ISO 5149-3:2014 and ISO 5149-3:2014/AMD1:2021. Supplementary heaters, or a provision for their separate installation, are within the scope of this standard, but only heaters which are designed as a part of the appliance package, the controls being incorporated in the appliance. 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, for example, by the national health authorities responsible for the protection of labour and the national authorities responsible for storage, transportation, building constructions and installations. This standard does not apply to – humidifiers intended for use with heating and cooling equipment (IEC 60335-2-88); – appliances designed exclusively for industrial processing; – 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). This eighth edition cancels and replaces the seventh edition published in 2022. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Clause 12 : Part 1, Clause 12 has been made applicable; b) Clause 19: requirement added for double wall heat exchangers to be resistant against freezing; c) Clause 20: requirement modified for when to apply test probe 18; d) Clause 21: requirement added for double wall heat exchangers to resistant against the pressure of the refrigerant if one of the walls fails; e) Clause 22: requirement modified to reflect that appliances can operate continuously and can be operated remotely without giving rise to a hazard, and requirement added for double wall heat exchangers to be constructed to avoid refrigerant leaking into the secondary circuit; f) Annex LL has been deleted and replaced by a reference to IEC TS 63542:2024. 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.