IEC 60721-2-2:20 24介绍了与电工产品相关的基本特性、表征量以及取决于降水和风的环境条件分类。 这第三版取消并取代了2012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: a)所提供信息的布局已重新组织； b)所提供的信息已得到广泛加强和修订； c)包含了有关风力严重程度的新信息。

IEC 60721-2-2:2024 presents fundamental properties, quantities for characterization, and a classification of environmental conditions dependent on precipitation and wind relevant to electrotechnical products.
This third edition cancels and replaces the second edition published in 2012. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) the layout of the information provided has been re-organized;
b) the information provided has been extensively enhanced and revised;
c) new information on wind severities has been included.