Download - Basic Of ATEX_Ex_Regulation_SCHUCH.pptx_GTE
Prof. Dr.-Ing. habil. Bruno WeisAdolf Schuch GmbH, Worms
Technical University, Berlin
● Zones
● Equipment-groups
● Categories
EU-regulation (ATEX)
Zone 0
A place in which an explosive atmosphere …..
is present continuously or for long periods or frequently.
Zone 1
A place in which an explosive atmosphere …..
is likely to occur in normal operation occasionally.
Zone 2
A place in which an explosive atmosphere …..
is not likely to occur in normal operation but, if it does occur, will persist for a short period only.
Zone 20
A place in which an explosive atmosphere …..
is present continuously, or for long periods or frequently.
Zone 21
A place in which an explosive
atmosphere …..
is likely to occur in normal
operation occasionally.
Zone 22
A place in which an explosive
atmosphere …..
is not likely to occur in normal
operation but, if it does occur, will
persist for a short period only.
Equipment-group
… intended for use in underground parts of mines … endangered by firedamp and for combustible dust.
Equipment-group II
… intended for use in areas in which explosive atmospheres are caused by mixtures of air and gases, vapours or mists or by air/dust.
Equipment-group I
Categories
Category 1 G - Zone 0Category 1 D - Zone 20
Category 2 G - Zone 1Category 2 D - Zone 21
Category 3 G - Zone 2Category 3 D - Zone 22
Category Zone Certificate
1 G, D 0, 20Certificate of conformity or type test certificate with explicit approval
2 G, D 1, 21Certificate of conformity or type test certificate
3 G, D 2, 22Manufacturer certificate in consideration of the general requirements of the standard 94/9/EG EN 50281
Categories
According EU-Regulation
Equipment group II – explpsive atmosphere(Equipment group I – gasy mines)
Category 2 (Zone 1 / Zone 21)
G = gas D = dust
max. Surface Temperature of the luminaire (+80° C)
Labelling for Zone 1/21
According to European Standard
„e“ increased safety„d“ flameproof„q“ sand filling
Explosion group (IIA, IIB, IIC)
Temperature class (T1 – T6)
Labelling for Zone 1/21
According EU-Regulation
Equipment group II – explosive atmosphere(Equipment group I – gasy mines)
Category 3 (Zone 2 / Zone 22)
G = gas D = dust
max. Surface Temperature of the luminaire (+80° C)
Ex-luminaire for Zone 2/22
According to European Standard
Explosion group (IIA, IIB, IIC)
Temperature class (T1 – T6)
„nA“ non sparking
„nC“ hermetically sealed
„nR“ restricted breathin
Ex-luminaire for Zone 2/22
e 15242II 2 G EEx edq T4 PTB 97 ATEX 2224II 2 D T80° C
nD 161136 EVGII 3 G nA II T4 TÜV 00 ATEX 1541II 3 D T80° C
Zone 2 / 22
Zone 1 / 21 – Zone 2/22
T4 = 135° CAll temperatures in the luminaireare under 135° C
DustsT80° C = all temperatures on the outside surface of the luminiare are
below 80° C (where dust deposits can exist)
Gases, vapours, mists - dusts
Type of protection for luminaires
Zone 1 and Zone 21
"e" increased safety
"d" flameproof
„e“ and „d“
II 2 G EEx ed IIC T2 – T4II 2 D T150° C
e 2691 /nD 2691
Zone 1/21 – Zone 2/22
II 3 G EEx nAC IIC T2 – T4II 3 D T150° C
Incandescent lamp 25 – 100 W
II 3 G EEx nA II T4
II 3 D T80° C (100° C with VVG)
nD 161… / 162…
Zone 2 – Zone 22
1 x 18 W … 2 x 58 W
nD 3084 - 86
Zone 2 – Zone 22
II 3 G E Ex nR II T2 / T3
II 3 D T130 – 170° C
400W High pressure discharge lamps