新的！IEC 60335-2-40:2018作为IEC 60335-2-40:2018 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。IEC 60335-2-40:2018涉及电动热泵的安全，包括卫生热水热泵、空调和除湿机，包括电机压缩机和循环风机盘管装置，其最大额定电压对于单相电器不超过250 V，对于所有其他电器不超过600 V。部分单位在本国际标准范围内。 不用于正常家庭使用但可能对公众造成危险的电器，如用于商店、轻工业和农场的非专业人员使用的电器，属于本标准的范围。上面提到的器具可以由一个或多个工厂制造的组件组成。如果在多于一个组件中提供，则单独的组件将一起使用，并且要求基于匹配组件的使用。本标准不考虑除ISO 817分类定义的A1、A2L、A2和A3组之外的制冷剂，A2L制冷剂仅限于基于ISO 817中规定的WCF最差情况配方的摩尔质量大于或等于42kg/kmol的制冷剂。本标准规定了使用易燃制冷剂的特殊要求。除非本标准（包括附件）涵盖了规格，否则ISO 5149涵盖了制冷安全要求。辅助加热器或其单独安装的规定在本标准的范围内，但仅限于作为电器组件一部分设计的加热器，控制器包含在电器中。对于打算用于车辆或船舶或飞机上的设备，可能需要额外的要求；对于承受压力的器具，可能需要额外的要求；本标准不适用于:用于加热和冷却设备的加湿器（IEC 60335-2-88）；专门为工业加工设计的设备或打算在特殊条件占优势的地方使用的设备，如存在腐蚀性或爆炸性环境（灰尘、蒸汽或气体）。本第六版取消并取代2013年发布的第五版及其修正案1:20 16。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更: -条款1-将A2L制冷剂限制为摩尔质量大于或等于42kg/kmol的那些；-第7条-增加了A2L制冷剂的要求， -第7条-增加了对预装料管道组、检测系统、通风和由此产生的装料的要求； -第7条-增加了对UV-C系统的要求； -第7条-增加了跨临界制冷系统的要求； -第19.7款-修订案文以符合该款的意图； -第21条-增加了跨临界制冷系统的要求； -子条款22-增加了A2L制冷剂的要求； -子条款22-增加了检测系统； -子条款22-增加了对增强密封性制冷系统的新要求； -子条款22-增加了UV-C的新要求； -第23条-增加了UV-C的新要求；条款 -第24条-增加了跨临界制冷系统的要求； -子条款24-增加了检测系统和气流的要求； -第32条增加了UV-C的新要求； -附录BB-修订以增加表面温度； -附件DD-增加了A2L制冷剂的要求，并修订了？易燃制冷剂豁免A2L制冷剂； -附件GG-增加了A2L制冷剂的要求； -附件GG.1-经修订的表GG.1及相关措辞 -附件GG.7-增加了试验要求； -附件GG.8至GG.13-A2L制冷剂的新覆盖范围； -附件HH-经修订以考虑到A2L制冷剂； -附件JJ-为防止A2L制冷剂点燃而允许打开继电器和类似部件的新覆盖范围； -附件KK-A2L热表面点火温度测试方法的新覆盖范围； -附件二-A2L制冷剂的制冷剂检测系统的新覆盖范围；-附件MM-制冷剂传感器位置确认测试的新覆盖范围； -附件NN-A2L制冷剂阻火器外壳验证试验的新覆盖范围； -附件OO-紫外线辐射调节的新覆盖范围 -参考书目-增加了新的参考文献。 本第2-40部分应与最新版本的IEC 60335-1及其修正案一起使用。它是在IEC 60335-1:20 10及其修正案1:20 13和修正案2:20 16的基础上建立的。

NEW!IEC 60335-2-40:2018 is available as IEC 60335-2-40:2018 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60335-2-40:2018 deals with the safety of electric heat pumps, including sanitary hot water heat pumps, air conditioners, and dehumidifiers incorporating motor-compressors and hydronic fan coils units, their maximum rated voltages being not more than 250 V for single phase appliances and 600 V for all other appliances. Partial units are within the scope of this International Standard.
Appliances not intended for normal household use but which nevertheless may be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard. The appliances referenced above may consist of one or more factory-made assemblies. If provided in more than one assembly, the separate assemblies are to be used together, and the requirements are based on the use of matched assemblies. This standard does not take into account refrigerants other than group A1, A2L, A2 and A3 as defined by ISO 817 classification, A2L 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. This standard specifies particular requirements for the use of flammable refrigerants. Unless specifications are covered by this standard, including the annexes, requirements for refrigerating safety are covered by ISO 5149. 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. For appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may be necessary; for appliances subjected to pressure, additional requirements may be necessary; 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 or 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 sixth edition cancels and replaces the fifth edition published in 2013 and its Amendment 1:2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- Clause 1 – limiting A2L refrigerants to those of a molar mass of more than or equal to 42 kg/kmol;
- Clause 7 – added requirements for A2L refrigerants,
- Clause 7 – added requirement for pre-charge pipe sets, detection systems, ventilation and the resulting charge;
- Clause 7 – added requirements for UV-C systems;
- Clause 7 – added requirements for transcritical refrigerating systems;
- Subclause 19.7 – amended text to match the intention of the subclause;
- Clause 21 – added requirements for transcritical refrigerating systems;
- Subclause 22 – added requirements for A2L refrigerants;
- Subclause 22– added detection systems;
- Subclause 22 – added new requirements for enhanced tightness refrigerating systems;
- Subclause 22 – added new requirements for UV-C;
- Clause 23 – added new requirements for UV-C;Clause
- Clause 24 – added requirements for transcritical refrigerating systems;
- Subclause 24 – added requirements for detection systems and airflow;
- Clause 32 added new requirements for UV-C;
- Annex BB – revised to add surface temperatures;
- Annex DD – added requirements for A2L refrigerants and amended requirements for？ flammable refrigerants to exempt A2L refrigerants;
- Annex GG – added requirements for A2L refrigerants;
- Annex GG.1 – amended Table GG.1 and related wording
- Annex GG.7 – added requirement to test;
- Annex GG.8 to GG.13 – new coverage for A2L refrigerants;
- Annex HH – revised to take into account A2L refrigerants;
- Annex JJ – new coverage of allowable opening of relays and similar components to prevent ignition of A2L refrigerants;
- Annex KK – new coverage of test method for hot surface ignition temperature for A2L;
- Annex LL – new coverage of refrigerant detection systems for A2L Refrigerants;
- Annex MM – new coverage of refrigerant sensor location confirmation test;
- Annex NN – new coverage of flame arrest enclosure verification test for A2L refrigerants;
- Annex OO – new coverage of UV radiation conditioning
- Bibliography – added new references.
This part 2-40 is to be used in conjunction with the latest edition of IEC 60335-1 and its amendments. It was established on the basis of IEC 60335-1:2010, its Amendment 1:2013 and its Amendment 2:2016.