
Classification of environmental conditions Part 3: Classification of groups of environmental parameters and their severities - Section 9: Microclimates inside products
出版:International Electrotechnical Committee

专家解读视频
Defines classes of microclimatic conditions, to which components (basic parts, assemblies, built-in units) may be subjected inside products, and which are used under the climatic conditions classified in IEC 60721-3-3 and IEC 60721-3-4.
JIS C 60721-3-9:2000 - Identical
SN EN 60721-3-9:1993 - Identical
CEI EN 60721-3-9 Ed. 1 (1997) - Identical
UNE EN 60721-3-9:1996 - Identical
SS EN 60721:1997 - Identical
SS EN 60721-3-9:2001 - Identical
PN EN 60721-3-9:1996 - Identical
NF EN 60721 3-9:1993 - Identical
I.S. EN 60721-3-9:1994 - Identical
NEN 10721-3-9:1994 - Identical
ONORM OVE EN 60721-3-9:1993 - Identical
GB/T 4798.9-1997 - Identical
DIN EN 60721-3-9 (1995-08) - Identical
BS EN 60721-3-9:1993 - Equivalent