What are the types of explosion-proof electrical equipment?

OurCountryWillExplosion-proof Electricaldivided intoThreeGreaterVarious:

• I VariousExplosion-proof Electricalsuitable forCoal Mineunderground；

•II VariousExplosion-proof Electricalsuitable forExplosive GasEnvironment；

•IIIVariousExplosion-proof Electricalsuitable forExplosive DustEnvironment。

• The explosion-proof electrical equipment used in petrochemical enterprises is mostly Category II explosion-proof electrical equipment.。

• When explosion-proof electrical equipment operates in explosive hazardous areas, it must have the performance of not igniting explosive substances, and the maximum surface temperature must not exceed the ignition temperature of the hazardous substances in the workplace.。

① Flameproof Type(d)

•this kind ofElectricalequipmenthaveFlameproof Enclosure， Even If InternalWithexplosionPerformanceMixingOverallMineralEntry And TriggerRiseexplosion，AlsoInvincibleCausingTriggerRiseExternalexplosionPerformanceMixingOverallMineralexplosion。

• It is designed based on the principle of maximum non-transmission gap, with a sturdy enclosure that can withstand 1.5 times the actual explosion pressure without deformation; its temperature during continuous operation must not ignite the explosive mixture.。

• This type of equipment has a high safety performance and can be used in various hazardous locations except Zone 0.。

② Increased Safety Type(e)

•Also Calledexplosion-proofSafety Type，innormaloperationConditions，will notgeneratePointGasexplosionPerformanceMixingOverallMineral的spark Or achievedangerous的temperature，suitable for1Level And 2LevelHazardous Area。

③ Intrinsically Safe Type(i)

•innormaloperation Or inStandardTestConditionsLocationsgenerate的spark Or HeatEnergy-savingShouldAllInvincibleAbilityPointGasexplosionPerformanceMixingOverallMineral。

•Intrinsically Safe Typeequipmentaccording toItssafetyExtentDegree And divided intoiaLevel And ibLevel:

•iaLevel——innormalIndustryOperating And OneProductionfault And TwoProductionfaultWhenInvincibleAbilityPointGasExplosive Gas的MixingOverallMineral，mainlyUsersInZone 0；

•ibLevel——innormalIndustryOperating And OneProductionfaultWhenInvincibleAbilityPointGasExplosive Gas的MixingOverallMineral，mainlyUsersInZone 1。

④ Pressurized Type(p)

this kind ofElectricalequipmenthaveProtectionEnclosure，ShellDomesticFillWithProtectionGas（惰Station），ItspressureHigher thanPerimeterAroundexplosionPerformanceMixingOverallGas的pressure，WithavoidanceExternalexplosionPerformanceMixingOverallGasAdvancedHumanShellDomesticoccurexplosion。

⑤ FillOilType(o)

Will May generatespark、arc Or dangeroustemperature的ComponentsimmerseinOilIn，RiseAchieve熄弧、Insulation、Heat Dissipation、Anti-corrosion的OperatingUsers，therebyInvincibleAbilityPointGasOilAspectsWithSupreme And EnclosurePerimeterAround的explosionPerformanceMixingOverallMineral。

⑥ Sand Filled Type（q）

•EnclosureDomesticFillStuffFine砂ParticleMaterial，WithFastinRegulationsUse ConditionsNext，EnclosureDomesticgenerate的arc、FireFlamePropagation，ShellWall Or ParticleMaterialTableAspects的DuringHeattemperatureAllInvincibleAbilityPointGasPerimeterAround的explosionPerformanceMixingOverallMineral。

• Suitable for Zone 1 and Zone 2 hazardous areas.。

⑦ non-sparking Type(n)

•innormaloperationConditionsInvincibleGenerate electricity弧 Or spark，AlsoInvinciblegenerateAbilitycanPointGasPerimeterAroundexplosionPerformanceOverallMineral的High TemperatureTableAspects Or 灼HeatPoint， And Generally will notoccur A Bit GasOperatingUsers的fault。

• Primarily used in Zone 2 hazardous area locations, with a relatively wide range of applications.。

⑧ explosion-proofspecialType（s）

•ItsExplosion-proof MeasuresinCountryStandardRegulationsWithOverseas，especiallyForZone 0 Or Zone 1Design的Explosion-proof electrical equipment，butmustManagementWithPay AttentionMainPipeExternalSiemensCertificationStable， And ManagementIndexStable的鉴StableUnitInspectionThrough的TheseOneVariousExplosion-proof electrical equipment。

（2）explosionPerformancedangerousMineralQualityclassification、ClassLevel And ClassUnit

•In order to And Explosion-proof Electricaldivided intoThreeGreaterVariousRelatedForShould，FastInExplosion-proof ElectricalChoose，according toexplosionPerformancedangerousMineralQuality的MineralPhilosophyIntelligentScientificPerformanceQuality，AlsoWillItsdivided intoThreeGreaterVarious。

MostGreatersafetyTestClearance（MESG）

•IndexinstandardRegulationsConditions，WillTestAsApplianceShellDomesticLocationsWithConcentration的beTestGas Or EvaporateSoda And AerospaceStation的MixingOverallMineralPointGasAfter-sales，Through25mmLong的Flangejoint surface，AllInvincibleAbilityPointGasShellOverseasExplosive GasMixingOverallMineral的EnclosureAerospaceCavityTwoPartPositionArea的MostGreaterClearance。

• The smaller the maximum experimental safe gap, the stronger the required flameproof performance.。

• The maximum experimental safe gap is an important basis for determining the flameproof enclosure class of electrical explosion-proof equipment and flame-arresting equipment.。

MostSmallPointGasCurrentCost-performance（MICR）

•inRegulations的Conditions，AbilityPointGasexplosionPerformanceMixingOverallMineral的MostSmallCurrent And Methane的MostSmallPointGasCurrent的Cost-performanceValue。

•ForIIVariousExplosive Gas的ClassLevelIsaccording toTransmitBlastAbilityStrength的GreaterSmall，adoptMostGreatersafetyTestClearanceAlgorithm（MESG） Or PioneerMostSmallPointGasCurrentCost-performanceAlgorithm（MICR）Advanced PlanClass的，divided intoA、B、CThreeLevel， Namely IIA、IIB、IIC，

explosionPerformancedangerousMineralQualityclassification、ClassLevel And ClassUnit

•Attention:TForIgnition Temperature

Explosive DustIsaccording toconductElectricPerformance And explosionPerformanceClassLevel、ClassUnit的

（3）Explosion-proof electrical equipment的Explosion-proof Marking And Selection

•Explosion-proof electrical equipment的Explosion-proof MarkingFor"Ex"，StandardinNameplate的RightSupremeAspect，WithsomeequipmentEnclosureSupremeWithEternalPermanent的markDigit迹（PourCast Or PunchPressure）。

• According to Chinese regulations, all types of explosion-proof electrical equipment should be marked with nameplates indicating the explosion-proof certificate number and explosion-proof type, class, level, temperature group, etc., as markings.。

• Its classification, grading, and grouping methods are the same as those for explosive substances, and the class parameters and Symbols are also the same.。

• For Example ，

•VariousFlameproof Type，markFordI；

•ⅡVariousFlameproof TypeBLevelT3UnitItsmarkFordⅡBT3；

•ⅡVariousIntrinsically Safe TypeiaLevelBLevelT5Unit，ItsmarkForiaⅡBT5。

• If more than one type of compound explosion-proof electrical equipment is used, the main explosion-proof type must be marked first, followed by other explosion-proof types. For example, if the main body is increased safety type and other components are flameproof type, Level B, Temperature Group T4, the marking is edIIBT4.。

Gas And Dust ExplosionHazardous LocationElectricalequipmentExplosion-proof TypeSelectionTable

• If SomeWorkshopMostdangerousMineralQualityForSolventAcetone，FromWithSupreme叙AsUpWell-known，AcetoneForIIVariousALevelT1UnitdangerousMineralQuality，ShouldWorkshopLocationsUse的Explosion-proof ElectricalShouldForIIAT1， If IsSelectZone 1Use的FlameproofMotor，thenItsmarkShouldFordIIAT1。

The above is an introduction to the types of explosion-proof electrical equipment. For more related information, please visit Hualong Explosion-proof at www.hlfbdq.com/.