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Explosion-Proof T1 To T6 Temperature

It’s evident that various explosive gases are categorized into specific temperature groups.

Temperature group of electrical equipmentMaximum allowable surface temperature of electrical equipment (℃)Gas/vapor ignition temperature (℃)Applicable device temperature levels
T1450>450T1~T6
T2300>300T2~T6
T3200>200T3~T6
T4135>135T4~T6
T5100>100T5~T6
T685>85T6

Group T1 has an ignition temperature of 450°C, Group T2 at 300°C, Group T3 at 200°C, Group T4 at 135°C, Group T5 at 100°C, and Group T6 at 80°C.

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