SN EN 60721-3-7 : 1995 AMD 1 1997

1. Scope
2. Normative references
3. Definitions
4. General
5. Classification of groups of environmental parameters
     and their severities
6. Sets of environmental condition class combinations
Tables
Figure
Annexes
A. Survey of conditions affecting the choice of
     environmental parameters and their severities
B. Interdependence of air temperature, relative
     humidity and absolute humidity
C. Examples for practical application of the
     classification specified in this standard
D. Summary of conditions covered by sets of class
     combinations
ZA. (normative) other international publications quoted
     in this standard with the references of the
     relevant European publications.

Classifies groups of environmental parameters and their severities to which products are subjected during portable and non-stationary use. These include: the environmental conditions at locations where the product may be placed or used temporarily, the change of environmental parameters due to change of location and conditions related to transfer of the product between different locations. The environmental conditions classified do not take into account the use profile of the product. Limited to those which may directly affect the performance of products. Environmental conditions directly related to fire or explosion hazards and conditions related to ionizing radiation are excluded. Microclimate within a product is not included.