IEC TR 60721-4-3:2003
環境條件分類.第4-3部分:IEC 60721-3的環境條件類別與IEC 60068的環境試驗的相互關系及轉換的指南.在氣候防護場所固定使用
Classification of environmental conditions - Part 4-3: Guidance for the correlation and transformation of environmental condition classes of IEC 60721-3 to the environmental tests of IEC 60068; Stationary use at weatherprotected locations