I.S. EN 60721-3-4:1997现行
Classification Of Environmental Conditions Part 3: Classification Of Groups Of Environmental Parameters And Their Severities - Section 4: Stationary Use At Non-weather-protected Locations
出版：National Standards Authority of Ireland
专家解读视频
Defines groups of environmental parameters and their severities to which products are subjected when mounted for stationary use at locations which are non-weatherprotected, including periods of erection work, downtime, maintenance and repair.
SS EN 60721-3-4:2001 - Identical
IEC 60721-3-4 Ed. 2.0 - Identical
BS EN 60721-3-4:1995 - Identical
DIN EN 60721-3-4 (1995-09) - Identical
SN EN 60721-3-4:1995 - Identical
UNE EN 60721-3-4:1997 - Identical
