JIS C 60721-3-4:1997 (R2013)

This Standard classifies groups of environmental parameter 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. Location which are non-weatherprotected, where products may be mounted for stationary use permanently or temporarily, include land-based and offshore locations. Use in and on vehicles is excepted. The environmental conditions specified in this Standard are limited to those which may directly affect the performance of products. only environmental conditions as such are considered. No special description of the effects of these conditions on the product is given. Environmental conditions directly related to fire or explosion hazards and conditions related to ionizing radiation are excluded. Any other unforeseen incidents are also excluded. The possibility of their occurrence should be taken into account in special cases. Microclimate within a product is not included.