IEC 60704-2-8:20 20 RLV包含官方IEC国际标准及其红线版本。Redline版本不是官方文档，它只有英文版本，为您提供了一种快速简单的方法来比较IEC官方标准与其以前版本之间的所有变化。 IEC 60704-2-8:20 20适用于家用和类似用途的电动剃须刀、剪刀或修剪器，由市电或二次电池或一次电池供电。术语“类似用途”应理解为意指在酒店、医院、商店、办公室等中的使用。本文件不适用于通过电力以外的方式（例如弹簧装置）供电的剃须刀、剪刀或修剪器。如果可能的话，本文件也可以应用于类似的电操作装置，例如脱毛装置。这第二版取消并取代了1997年出版的第一版。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: a)产品范围扩大至包括理发器和修剪器； b)它包括1.1.3中声功率级的标准偏差； c)规范性参考文献已更新（ISO 3744:2010和ISO 3743-1:20 10）； d)根据IEC 60704-1:20 10进行调整； e)已更新以符合ISO/IEC指令第2部分。 本第2-8部分旨在与IEC 60704-1第三版（2010年）《家用和类似用途电器—空气传播声噪声测定试验规范—第1部分:一般要求》一起使用。本第2-8部分补充或修改了IEC 60704-1:20 10中的相应条款，从而建立剃须刀、理发器或修剪器的试验规范。

IEC 60704-2-8:2020 RLV contains both the official IEC International Standard and its Redline version. The Redline version is not an official document, it is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 60704-2-8:2020 applies to electric shavers, clippers or trimmers for domestic and similar use, supplied from mains or secondary batteries or primary batteries. The term "similar use" is understood to mean the use in hotels, hospitals, shops, offices, etc. This document does not apply to shavers, clippers or trimmers that are powered by means other than electrical, for example by a spring-device. If possible, this document can also be applied to analogous electrically operated devices, such as depilating devices. This second edition cancels and replaces the first edition published in 1997. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) the scope of the products has been enlarged to include hair clippers and trimmers;
b) it includes standard deviations of sound power levels in 1.1.3;
c) the normative references have been updated (ISO 3744:2010 and ISO 3743-1:2010);
d) it is adjusted with respect to IEC 60704-1:2010;
e) it has been updated to comply with the ISO/IEC Directives, Part 2.
This Part 2-8 is intended to be used in conjunction with third edition (2010) of IEC 60704-1, Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 1: General requirements. This Part 2-8 supplements or modifies the corresponding clauses in IEC 60704-1:2010, so as to establish the test code for shavers, hair clippers or trimmers.