Pressurized explosion-proof cabinets come in multiple models for users to purchase. Each model corresponds to use in specific explosive environments. Due to different explosion-proof processing techniques, different models cannot be mixed. Users need to select models based on the on-site environment when purchasing.。

The selection principle for pressurized explosion-proof cabinets is based on the usage environment, explosion-proof zone, and electrical requirements, in that progressive order.。

One、Use EnvironmentSelection

Explosion-proof positive pressure cabinetUse Environmentdivided intoTwoGreaterVarious，Combustible GasEnvironment And flammableDustEnvironment。

1.Gasexplosion-proofChoosePXKTypeExplosion-proof positive pressure cabinet，ThereforetypeUpWithmeetIIA、IIB、Group IICCombustible GasEnvironment的explosion-proofrequirements；

2.Dust Explosion-proofChooseDustExplosion-proof positive pressure cabinet，ThereforetypeOnlyforhaveflammableDust的on-siteEnvironment；

3.Quiteon-site Both WithflammableDust，AlsoWithCombustible GasWhen，needTowardExplosion-proof positive pressure cabinetManufacturerdescription，ManufacturerinAdvanced Design And ProductionWhen，ThenCriticalConsidermeanwhilemeetTwoVariousRequirements。

2、Explosion Hazardous AreaRegionSelection

Explosion-proof positive pressure cabinetUseAreaRegionAlsoForTwoGreaterVarious，GasExplosion Hazardous AreaRegion And Dust Explosion-proofAreaRegion。

1.GasExplosion Hazardous AreaRegionWithZone 1 And Zone 2，Zone 1ChoosePXTypeExplosion-proof positive pressure cabinet，Zone 2ChoosePYTypeExplosion-proof positive pressure cabinet， Although PXTypeAlsoUpinZone 2Use，butTwoPioneerpriceWithdifferenceExcellent，PXTypepriceHighOnesome，FromProcurementcostConsider，Zone 2alsoIsChoosePYTypePerformanceValueCost-performanceHigh；

2.Dust Explosion-proofAreaRegionWithZone 21 And Zone 22，TwoVariousExplosion Hazardous AreaRegionAllChoosePDTypeExplosion-proof positive pressure cabinet，InvincibleAbilityUsePX And PYType。

Three、ElectricalrequirementsSelection

ElectricalrequirementsPartCriticalConsiderPositive Pressure CabinetLongRegularoperationstablePerformance。A common issue is heat dissipation; for example, cabinets equipped with high-power variable frequency drives or electrical equipment above 40KW may require the installation of an explosion-proof air conditioner for cooling.。

Remembering the above key points when purchasing an explosion-proof positive pressure cabinet can not only reduce procurement costs but also prevent safety hazards and ensure long-term stable operation of the cabinet.。