IEC 60721-2-6:20 22涉及自然界中出现的与地震振动和冲击相关的环境条件。 其目的是定义一些基本属性和数量，以表征地震，作为产品在储存和使用过程中容易暴露的严重程度的背景材料。给出的加速度仅适用于地面条件。提及了与结构相关的条件，但仅限于一般情况描述。 这第二版取消并取代了1990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: 本次修订的主要目的是将设备安装区域的地震活动水平分为有限数量的类别；由于以严格的方式定义这种相关性的科学不确定性，强度尺度、震级尺度和峰值地面加速度之间的相关性被删除； 给出了强度和震级的更新等级； 在实践中无法使用的地震带图被一个附件所取代，该附件提供了关于如何在世界各地检索一致的地面加速度峰值分布的信息； 关于可以安装设备的区域的峰值地面地震加速度的识别，让用户知道国家标准和法律可以适用。

IEC 60721-2-6:2022 deals with environmental conditions appearing in nature related to earthquake vibrations and shocks.
Its object is to define some fundamental properties and quantities for characterization of earthquakes as background material for the severities to which products are liable to be exposed during storage and use. The accelerations given are for ground surface conditions only. Conditions related to structures are referred to but restricted to general case descriptions.
This second edition cancels and replaces the first edition published in 1990. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:

1. the main aim of this revision is to classify in a limited number of classes the seismic activity level of the zone where the equipment could be installed;
2. the correlation between intensity scales, magnitude scales and peak ground acceleration is deleted due to the scientific uncertainty to define such a correlation in a rigorous way;
3. updated scales are given both for intensity and for magnitude;
4. the earthquake zone map, which was not usable in practice, is replaced by an annex giving information about how to retrieve consistent peak ground acceleration distribution all over the world;
5. with regard to identification of the peak ground seismic acceleration of the zone, where the equipment could be installed, the user is made aware that national standards and laws can apply.