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WhichExplosion-ProofLevelIsHigher,BT4orCT6|TechnicalSpecifications

Technical Specifications

Which Explosion-Proof Level Is Higher, BT4 or CT6

The BT4 model is classified under Explosion-proof Class B with a temperature rating of T4, stipulating that the equipment’s surface temperature cannot exceed 135°C.

Class And LevelIgnition Temperature And Group
-T1T2T3T4T5T6
-T>450450≥T>300300≥T>200200≥T>135135≥T>100100≥T>85
IMethane
IIAEthane, Propane, Acetone, Phenethyl, Ene, Aminobenzene, Toluene, Benzene, Ammonia, Carbon Monoxide, Ethyl Acetate, Acetic AcidButane, Ethanol, Propylene, Butanol, Acetic Acid, Butyl Ester, Amyl Acetate Acetic AnhydridePentane, Hexane, Heptane, Decane, Octane, Gasoline, Hydrogen Sulfide, Cyclohexane, Gasoline, Kerosene, Diesel, PetroleumEther, Acetaldehyde, TrimethylamineEthyl Nitrite
IIBPropylene, Acetylene, Cyclopropane, Coke Oven GasEpoxy Z-Alkane, Epoxy Propane, Butadiene, EthyleneDimethyl Ether, Isoprene, Hydrogen SulfideDiethylether, Dibutyl Ether
IICWater Gas, HydrogenAcetyleneCarbon DisulfideEthyl Nitrate

Conversely, the CT6 model holds a Class C explosion-proof rating, covering the requirements of BT4 and applicable to zones with dangerous gases like hydrogen and acetylene. T6 equipment must maintain a surface temperature no higher than 85°C.

In terms of temperature categories, T6 represents the highest safety level, suggesting that a lower equipment surface temperature is preferable.

As a result, CT6 possesses a superior explosion-proof classification.

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