标准摘要
[中文适用范围]： This part of IEC 60721 presents a broad division into types of solar radiation areas. It is intended to be used as part of the background material when selecting appropriate severities of solar radiation for product applications. All types of geographical areas are covered, except areas with altitudes above 5 000 m. This document also serves to define limiting severities of solar radiation to which products are liable to be exposed during transportation, storage and use. [外文原描述]： IEC 60721-2-4:2018 RLV contains both the official IEC International Standard and its Redline version. The Redline version 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 60721-2-4:2018 presents a broad division into types of solar radiation areas. It is intended to be used as part of the background material when selecting appropriate severities of solar radiation for product applications. All types of geographical areas are covered, except areas with altitudes above 5 000 m. This second edition cancels and replaces the first edition published in 1987 and Amendment 1:1988. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - Figures updated including the addition of global irradiation information - Format updated.
英文名称Classification of environmental conditions - Part 2-4: Environmental conditions appearing in nature - Solar radiation and temperature