iec 60721 3 4
IEC 60721-3-4environmental conditions classificationstationary use non-weatherprotectedproduct environmental designenvironmental testing standards
IEC 60721-3-4 is a crucial standard classifying environmental conditions to which products are exposed, specifically focusing on stationary use within non-weatherprotected installations. This part details the groups of environmental parameters and their severities, providing essential guidelines for designers and manufacturers to ensure product reliability and performance under defined environmental stresses.