IEC 60704-2-2:20 23 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 60704-2-2:20 23 EXV包括参考IEC 60704-1:20 21的内容。 IEC 60704-2-2:20 23 EXV适用于电风扇加热器，设计用于放置在地板、桌子或柜台等上，或用于安装。本文件不适用于: -储藏室电加热器； -室内加湿器； -室内除湿机； -空气净化器； -专为工业用途设计的加热器。 要确定和验证产品质量标准中声明的噪声发射值，请参考IEC 60704-3:20 19。这第三版取消并取代了2009年出版的第二版。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: -与最新版本的IEC 60704-1:20 21保持一致， -增加若干ISO标准， -修订内置条件， -增加了关于气候条件和背景噪音的要求。 本第2-2部分旨在与IEC 60704-1:20 21第四版《家用和类似用途电器-空气传播声噪声测定的试验规范-第1部分:一般要求》一起使用。 本第2-2部分补充或修改了IEC 60704-1:20 21中的相应条款。

IEC 60704-2-2:2023 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 60704-2-2:2023 EXV includes the content of the references made to IEC 60704-1:2021.

IEC 60704-2-2:2023 EXV applies to electric fan heaters, designed for placing on the floor, table or counter, etc., or for mounting. This document does not apply to:
- electric storage room heaters;
- room humidifiers;
- room dehumidifiers;
- air cleaners;
- heaters designed exclusively for industrial purposes.
For determining and verifying noise emission values declared in product specifications, refer to IEC 60704-3:2019. This third edition cancels and replaces the second edition published in 2009. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- alignment with the latest edition of IEC 60704-1:2021,
- addition of several ISO standards,
- revision of built-in-conditions,
- addition of requirements on climatic conditions and on background noise.
This part 2-2 is intended to be used in conjunction with the fourth edition of IEC 60704-1:2021, Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 1: General requirements.
This part 2-2 supplements or modifies the corresponding clauses in IEC 60704-1:2021.