IEC 60335-2-66:2025 EXV包含国际标准及其扩展版本(EXV)。IEC官方标准的扩展版本仅提供英文版本，为用户提供了标准的全面内容。IEC 60335-2-66:2025 EXV包括参考IEC 60335-1:20 20的内容。 IEC 60335-2-66:2025涉及家用和类似用途的电水床加热器及其相关控制单元的安全性，其额定电压不超过250 V，包括直流（DC）供电的电器。 不用于正常家庭使用，但可能对公众造成危险的电器，如用于酒店的电器，属于本标准的范围。 在可行的情况下，本标准涉及家庭内外所有人都会遇到的电器带来的常见危险。然而，一般来说，它没有考虑到 -身体、感官或精神能力受损的人（包括儿童）；或缺乏经验和知识使他们无法在没有监督或指导的情况下安全使用器具； -儿童在玩电器。 提请注意以下事实: -对于拟用于车辆、船舶或飞机的器具，可能需要附加要求； -在许多国家，国家卫生当局、负责劳动保护的国家当局、国家供水当局和类似当局规定了额外的要求。 本标准不适用于电器 -用于医疗目的(IEC 60601系列)； -用于在使用过程中浸入水中。本第三版取消并取代了2002年出版的第二版、修正案1:20 08和修正案2:20 11。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: a)符合IEC 60335-1:20 20； b)将一些注释转换为规范性文本（第1、19.4、22.101条）； c)澄清远程操作的要求（22.40、22.49、22.51）。 本第2部分应与最新版本的IEC 60335-1及其修订一起使用，除非该版本排除了本第2部分；在这种情况下，使用不排除它的最新版本。它是在该标准第六版（2020年）的基础上建立的。

IEC 60335-2-66:2025 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user with a comprehensive content of the Standard. IEC 60335-2-66:2025 EXV includes the content of the references made to IEC 60335-1:2020.

IEC 60335-2-66:2025 deals with the safety of electric water-bed heaters and their associated control units, for household and similar purposes, their rated voltage being not more than 250 V, including direct current (DC) supplied appliances.
Appliances not intended for normal household use, but that nevertheless can be a source of danger to the public, such as appliances intended to be used in hotels, are within the scope of this standard.
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. However, in general, it does not take into account
– persons (including children) whose physical, sensory or mental capabilities; or lack of experience and knowledge prevents them from using the appliance safely without supervision or instruction;
– children playing with the appliance.
Attention is drawn to the fact that
– for appliances intended to be used in vehicles or on board ships or in 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, the national water supply authorities and similar authorities.
This standard does not apply to appliances
– for medical purposes (IEC 60601 series);
– intended for immersion in water during use.
This third edition cancels and replaces the second edition published in 2002, Amendment 1: 2008 and Amendment 2:2011. 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, 19.4, 22.101);
c) clarification of requirements for remote operation (22.40, 22.49, 22.51).
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.