
ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - TYPE OF PROTECTION "N"
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
Defines requirements for construction, testing and marking of Group II electrical apparatus with type of protection "n", meant to be used solely in areas where explosive atmospheres of gas, vapour and mist are not likely to occur, or if they do, only infrequently or for a short time.
BS EN 50021 : 1999 - Identical
I.S. EN 50021:2001 - Identical
SN EN 50021 : 1999 - Identical
EN 50021 : 99 COR 2000 - Identical
VDE 0170-16 : 2011 - Corresponds
UNE EN 50021 : 2000 - Identical
NF EN 50021 : 2000 - Identical
NEN EN 50021 : 99 C1 2000 - Identical
SN EN 50021 : 1999 - Identical
NBN EN 50021 : 1ED 2000 - Identical
NF EN 50021 : 2000 - Identical
UNE EN 50021 : 2000 - Identical
I.S. EN 50021:2001 - Identical
BS EN 50021 : 1999 - Identical
NEN EN 50021 : 99 C1 2000 - Identical
NBN EN 50021 : 1ED 2000 - Identical