The explosion-proof classification of IIC is considered superior, encompassing the requirements for both IIB and IIA, with IIB rated above IIA.
Tilstandskategori | Gassklassifisering | Representative gasser | Minimum tenningsgnistenergi |
---|---|---|---|
Under Gruven | Jeg | Metan | 0.280mJ |
Fabrikker utenfor gruven | IIA | Propan | 0.180mJ |
IIB | Etylen | 0.060mJ | |
IIC | Hydrogen | 0.019mJ |