Explosion Proof Marking
Explosion Proof Marking
| Marking | Description |
 |
CE mark |
| 2004 | Identification number of the notified body |
 |
Marking for equipment for use in explosive atmosphere |
| II | Explosion Proof group ‘I’=Mines, ‘II’=Surface industries |
| 2 | ‘1’=Zone 0, ‘2’=Zone 1, ‘3’=Zone 2 |
| G | M’=methane gas, ‘G’=gas, ‘D’= dust |
| Ex d | Types of protection |
| IIC | Equipment groups |
| T6 | Temperature class |
| Gb | ‘Ga’=Zone 0, ‘Gb’= Zone 1, ‘Gc’=Zone 2 |
| IP66 | Protection rating(IP) |
| 40°C≤Tamb≤+60°C | Ambient operating temperature |
Area Classification
| Continuous hazar | Intermittent hazard | Possible hazard | ||
| IEC/CENELEC |
Zone 0 Zone 20(DUST) |
Zone 1 Zone 21(DUST) |
Zone 2 Zone 22(DUST) |
|
| USA | NEC505 | Zone 0 | Zone 1 | Zone 2 |
|
NEC500 CLASSI(GAS) CLASSII(DUST) CLASSIII(FIBERS) |
DIVISION 1 | DIVISION 2 | ||
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