| |
Code |
CENELEC
EN |
IEC
60079 |
Permitted zone /
ATEX category |
Remarks |
| 0 / 1 |
1 / 2 |
2 / 3 |
| Explosion prevention & protection-pt. 1 |
|
1127-1 |
|
|
|
|
Basic concepts and methodology. Further sections imminent |
| Category M1 |
|
50303 |
|
|
|
|
Mining equipment operated in gas atmosphere |
| Electrical equipment for dusts (D) |
|
50281-1-1 |
|
|
|
|
Enclosure protected. construction and testing |
| Electrical equipment for dusts (D) |
|
50281-1-2 |
|
|
|
|
Enclosure protected - selection, installation & maintenance |
| Group II electrical apparatus for gas atmospheres |
| Category 1G |
|
50284 |
-26 |
|
|
|
Permits combined method of protection |
| General requirements |
|
50014 |
-0 |
|
|
|
Basic electrical requirements |
| Oil immersion |
o |
50015 |
-6 |
|
|
|
Protection by gas exclusion - transformers |
| Pressurised |
p |
50016 |
-2 |
|
|
|
Protection by gas exclusion - analysers |
| Powder filled |
q |
50017 |
-5 |
|
|
|
Protection by gas exclusion - weighing machines |
| Flameproof |
d |
50018 |
-1 |
|
|
|
Prevention of propagation of internal explosion - dc motors |
| Increased safety |
e |
50019 |
-7 |
|
|
|
Prevention by design - induction motors |
| Intrinsic safety ia |
ia |
50020 |
-11 |
|
|
|
Low energy. Safe with two faults - level measurement |
| Intrinsic safety ib |
ib |
50020 |
-11 |
|
|
|
Low energy. Safe with one fault - displays |
| Intrinsic safety systems |
|
50039 |
-25 |
|
|
|
Considers combination of intrinsically safe apparatus |
| Encapsulated |
m |
50028 |
-18 |
|
|
|
Protection by gas exclusion - solenoid valves |
| Type of protection 'n' |
n |
50021 |
-15 |
|
|
|
|
