UNE-EN IEC 60721-3-4:2019现行
Classification of environmental conditions - Part 3-4: Classification of groups of environmental parameters and their severities - Stationary use at non-weatherprotected locations (Endorsed by Asociación Espa?ola de Normalización in September of 2019.)
出版：Asociacion Espanola de Normalizacion
专家解读视频
This part of IEC 60721 classifies groups of environmental parameters and their severities to which products are subjected when installed for stationary use at non-weatherprotected locations.
IEC 60721-3-4 : 2019 - Identical
EN IEC 60721-3-4:2019 - Identical
IEC 60721-3-4 : 2.0 - Identical
IEC 60721-3-4:2019 - Identical
EN IEC 60721-3-4:2019 - Identical
IEC 60721-3-4:1995 - Identical
