Product Encyclopedia

Temperature classifications serve as a critical safety indicator for assessing the ignition capability of flammable gases and explosion-proof electrical equipment. Flammable gases are categorized into six classes based on their combustion temperatures, while electrical equipment is classified into six categories based on their maximum surface temperatures, denoted as T1, T2,…

Class A equipment designated for Dust Explosion Zone 21 is characterized by a maximum surface temperature of TA 85°C. In environments where explosions must be prevented, the air can contain flammable and explosive materials such as gases, vapors, dust, and fibers. Explosions can occur when these substances come into contact…

There is no hierarchy in explosion-proof ratings for dust and gas, as they are governed by different national standards. Dust explosion-proof certification follows the standard GB12476, while gas explosion-proof certification adheres to GB3836. The differing standards mean the tests conducted during the certification process vary. Therefore, these two types of…

Dust explosion-proof electric hoists are classified into three explosion-proof grades: IIA, IIB, and IIC. They are suitable for environments where combustible gases or vapors mix with air, categorized into temperature groups T1 to T4. [table id=165 /] These electric hoists are further divided into Class B and Class C types,…

Gas explosion-proof motors are not suitable for environments requiring dust explosion-proof motors. This is due to the different national electrical explosion-proof standards they adhere to: gas explosion-proof motors comply with GB3836, while dust explosion-proof motors follow GB12476. Motors that meet both these standards and pass tests for each can be…