Brochure/Catalogue

ATEX
ATEX directives
Since July 1, 2003, all new facilities
in hazardous areas must be certied
according to ATEX Directive 94/9/EG
or ATEX 95 (ATEX: ATmosphère
EXplosive = explosive atmosphere).
This directive is one of the “New-
Approach” directives. It is valid in all
European Union countries, as well as
Iceland, Lichtenstein and Norway. In
these countries, the directive refers
to the sale and commissioning of
products which have been designed
particularly for high explosion risk
environments (where explosive
atmospheres exist due to gases,
vapours, mists, or dusts). It now also
covers the mining sector and purely
mechanical devices.
Class of protection
Type of protection Code CENELEC EN IEC Product category
explosion protect.
General requirements – 60079-0 60079-0 –
Oil immersion o 60079-6 60079-6 2
Pressurised apparatus p 60079-2 60079-2 2
Powder lling q 60079-5 60079-5 2
Flameproof enclosure d 60079-1 60079-1 2
Increased safety e 60079-7 60079-7 2
Intrinsic safety ia 60079-11 60079-11 1
Intrinsic safety ib 60079-11 60079-11 2
Intrinsic safety ic 60079-11 60079-11 3
Typ n (Ex n) n 60079-15 60079-15 3
Encapsulation m 60079-18 60079-18 2
Classification for potentially hazardous areas
CENELEC
classication
IEC60079-10
Presence of potentially
explosive atmosphere
Product-
category
US classication
NEC 500
Combustible
media
Zone 0
permanent, long-term
1G Class I, Div 1 gases, vapours
Zone 20
or frequently
1D Class II, Div 1 dust
Zone 1
occasionally
2G Class I, Div 1 gases, vapours
Zone 20 2D Class II, Div 1 dust
Zone 2
rarely and
3G Class I, Div 2 gases, vapours
Zone 22
briey
3D Class II, Div 2 dust
Explosion groups
Gas (e.g.) CENELEC NEC 500
Propane IIA D
Ethylene IIB C
Hydrogen IIC B
Acetylene IIC A
Methane (mining) I mining (MSHA)
Temperature classes
Max. surface
temperatur (°C)
Temperature class
CENELEC
Temperature class
NEC 500-3
450 T1 T1
300 T2 T2
280 – T2A
260 – T2B
230 – T2C
215 – T2D
200 T3 T3
180 – T3A
165 – T3B
160 – T3C
135 T4 T4
120 – T4A
100 T5 T5
85 T6 T6
W
Technical appendix/Glossary
W.18 2729490000