Class C offers enhanced safety with more meticulous explosion-proof treatment.
Grupi i temperaturës së pajisjeve elektrike | Temperatura maksimale e lejuar e sipërfaqes së pajisjeve elektrike (℃) | Temperatura e ndezjes së gazit/avullit (℃) | Nivelet e aplikueshme të temperaturës së pajisjes |
---|---|---|---|
T1 | 450 | > 450 | T1~T6 |
T2 | 300 | > 300 | T2~T6 |
T3 | 200 | > 200 | T3~T6 |
T4 | 135 | > 135 | T4~T6 |
T5 | 100 | > 100 | T5~T6 |
T6 | 85 | >85 | T6 |
Flameproof designs typically feature threading rather than insertable components. Class C devices provide longer flameproof surfaces and narrower explosion gaps. Hidrogjeni, acetilen, and carbon disulfide necessitate the use of IIC class, whereas other substances are adequately served by IIB class.