HD 478.3.3:1989被替代
Classification Of Environmental Conditions - Classification Of Groups Of Environmental Parameters And Their Severities Stationary Use At Weatherprotected Locations
出版：Harmonization Documents
专家解读视频
Specifies groups of environmental parameters and their severities to which products are subjected when mounted for stationary use at weather protected locations. Limited to those which may directly affect the performance of products. No special description of the effects of these conditions is given. Environmental conditions directly related to ionizing radiation are excluded. Microclimate within a product is not included.
BS 7527-3.3:1991 - Equivalent
DIN IEC 60721-3-3 (1990-04) - Identical
BS EN 60721-3-3:1995 - Equivalent
NFC 20 000:1990 - Identical
