Explosion-proof distribution box的Use PlacesEasyoccurSafety Accident， So non论IsUserProcurement And ManufacturerSystemOperatingProduction，allShouldShouldaccording toExplosion-proof distribution box的National Standard And requirementsAdvanced ，explosion-proofStandardWithCountryPracticalGB3836ForStandard。

The standard has clear requirements for each explosion-proof type of explosion-proof distribution box, which can be downloaded online. Due to the extensive content and strong professionalism of the standard, Zhengzhou Hualong summarizes and mainly introduces three explosion-proof types commonly used by users: flameproof type, increased safety type, and pressurized type.。

ThreeVarioustypeExplosion-proof distribution box的requirements And StandardRelatedSamePositionProcessing，summaryAfter-salesWithfollowingSeveralPoint:

1. Use ScoperequirementsRelatedSame，inCoal MineundergroundUse的ForIVarious，OtherAreaRegionForIIVarious。Only explosion-proof distribution box manufacturers with a coal mine safety certification can produce distribution equipment for underground coal mines. For Class II areas (such as chemical, petroleum, aerospace, etc.), an explosion-proof certificate and an explosion-proof electrical production license are sufficient.。

2. The shell and component materials can be metal or non-metal, but must meet the requirements of impact resistance, thermal stability, light resistance, flame retardancy, and sealing. Considering the high cost of non-metals, the industry basically uses aluminum alloy, carbon steel, and stainless steel materials.。

Explosion-proof distribution box的Use Requirements And National Standardclassification:OneVarious(IA,IB,IC)，2Various(IIA,IIB,IIC)

1. ⅠVarious:Coal MineundergroundElectricalequipment；ThereforeVariousCriticalnoteGas、CoalDust的PointFire And undergroundequipment的attachPlusMineralPhilosophyProtective Measures。Since our Zhengzhou Hualong specializes in Class II explosion-proof electrical equipment, Class I distribution equipment is not our strength, so we will not elaborate on it here.。

2. Class II: Electrical equipment for all other explosive gas atmospheres except coal mine underground.。Class II electrical equipment is classified according to the type of gas environment used: IIA: representative gases are methane, propane, carbon monoxide, petroleum, acetaldehyde, etc.; IIB: representative gases are ethylene and hydrogen sulfide; IIC: representative gases are hydrogen, acetylene, and carbon disulfide.。Class II can be further divided into IIA, IIB, and IIC. Equipment with explosion-proof marking IIB can be applied to the usage conditions of IIA equipment; IIC can be applied to the usage conditions of IIA and IIB.。

3. Dust explosion-proof distribution boxes are used in explosive dust environments other than coal mine underground.。The latest standard has changed from the previous IIIC to flameproof type and increased safety type tD, and pressurized type pD.。Dust explosion-proof is mainly achieved through enclosure protection type. In simple terms, as long as the protection rating meets IP65 and above, it meets the dust explosion-proof requirements.。

Users who have dealt with explosion-proof distribution boxes should know that due to different industry needs, most explosion-proof distribution boxes are non-standard customized products that need to be designed according to specific usage requirements. The above is the requirements and national standards for explosion-proof distribution boxes.。