
Electrical apparatus for potentially explosive atmospheres. Type of prot ection "n"
出版:British Standards Institution

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.
© British Standards Institution 2013
Amendment notes:
AMD 10697 published 15 July 1999
AMD 15898 published 17 March 2006
AMD 10697 and AMD 15898 are Corrigenda
NEN EN 50021:1999 - Identical
SS EN 50021 Ed. 1 (1999) - Identical
NF EN 50021:2000 - Identical
DIN EN 50021 (2000-02) - Identical
SN EN 50021:1999 - Identical
DIN EN 50021 : 2000 - Identical
NBN EN 50021 : 1ED 2000 - Identical
NEN EN 50021 : 99 C1 2000 - Identical
UNE EN 50021 : 2000 - Identical
SN EN 50021 : 1999 - Identical
I.S. EN 50021:2001 - Identical
NF EN 50021 : 2000 - Identical
EN 50021 : 99 COR 2000 - Identical
NEN EN 50021 : 99 C1 2000 - Identical
I.S. EN 50021:2001 - Identical
DIN EN 50021 : 2000 - Identical
I.S. EN 50021:2001 - Identical
UNE EN 50021:2000 - Identical