Explosion-proof positive pressure cabinet

Explosion-proof positive pressure cabinetIsOneVariouspossessPositive Pressure Explosion-proof的Distribution Cabinet，ByPositive Pressure CabinetStructure、SelfControlsystem、StationLinesystem、Alarm System、power distributionsystemcomposition。It is suitable for Class IIA, IIB, or IIC atmospheres, with temperature classes T1 to T6, containing explosive gases.。It is applicable to Zones 0, 1, and 2 in hazardous environments with explosive gas atmospheres, as well as Zones 20, 21, or 22 where explosive dust and air mixtures are present, covering all hazardous area classifications.。

Explosion-proof positive pressure cabinetfeature

applicablePerformancerangeWide

Meet CustomerInstallationvariousOrdinaryElectricalcomponent And AnalyzerTable、Touch Screen、GreaterPowerInverter，DomesticInstallationcomponentbasicInvincibleRestrictedLimitedSystem。 And Explosion-proof distribution boxInvinciblePermitTouch ScreenDirectlycontactTouchOperate。

Heat DissipationperformanceBrilliant

Explosion-proof positive pressure cabinetAdvancedStationmethoddivided intoventilationType And RepairCompensateType，ventilationTypeForInvincibleAreaDeterminationContinuityPower SupplyStation，haveVeryBrilliant的Heat Dissipationfunction；RepairCompensateTypeForAreaDeterminationPower SupplyStation，Positive PressureCavitySealing PerformanceBrilliant，ConsumptionStationQualitySmall。It solves the heat dissipation problem of high-power variable frequency drives that cannot be addressed by explosion-proof distribution boxes.。

Safeautomaticexplosion-proofPositive Pressure Controller

Explosion-proof positive pressure cabinetSelfControlsystemForexplosion-proofPositive Pressure Controller，ShouldProducthaveintelligentintegrateIncontrol、LiquidCrystalarticleDigitExcellentIndicate、automaticChangeStation、extendWhenautomaticpower supply、lossPressureRepairStation、Fault Alarm And dangerousWhenautomaticCutPower OffSourceEtc.function。

Positive Pressure Explosion-proofPrinciple

Principle of explosion-proof positive-pressure cabinetsIsadoptMediumQualityIsolationDistancePointGasSource的Explosion-proof MeasurestherebyachieveElectricalexplosion-proof的Purpose。Positive Pressure Explosion-proofCabinetinautomaticcontrolsystem的controlNext，IntroduceProtectionGas，Positive PressureCavityDomesticpressureHigher thanPositive PressureCavityOverseas的pressure，DescribeCostMicroPositive Pressure safetySmallEnvironment，therebyHinderPrevent了flammablePerformancedangerousGasEntryPositive PressureCavityDomestic，guaranteeDomesticInstallationOrdinaryInstrumentTable And ElectricAppliancecomponent safetyoperation。

The automatic control system mainly performs a series of functions including automatic air exchange, air replenishment, overpressure alarm (or exhaust), underpressure alarm, low-pressure interlock, and air-exchange interlock.。

This distribution cabinet has a low-pressure interlock function. When the pressure drops below the specified value (50Pa), it automatically cuts off the user power supply entering the pressurized chamber.。

Explosion-proof positive pressure cabinetparameter

Explosion-proof positive pressure cabinetStructure

cabinet bodyadoptGGDCabinetRack，divided intoBoxForm、琴PlatformForm、CabinetForm；CabinetForm And divided intoSupremeNextstructure And LeftRightstructure；ByPositive PressureCavity And ViceCavitycomposition，ViceCavityDomesticInstallationSelfControlsystem、Alarm System、Air SourceDuringFiltersystem And UserAdvancedOutgoing LineCable；Positive PressureCavityDomesticInstallationUser的power distributionsystemcomponent。The cabinet body is welded from Q235 steel plate or stainless steel, with electrostatic powder coating on the surface, and all joint surfaces undergo special sealing treatment.。

SelfControlsystem

Explosion-proof positive pressure cabinetsystemAlso Known Asexplosion-proofPositive Pressure Controller，adopt3.5InchTrulyColoredGreaterScreenExcellentIndicate；AdvancedStationValve、DrainStationValve、TemperatureControlValve、Alarm、Userpower supply，FiveLinecontrol；ChangeStationTime、pressureSupremeLimited、pressureSupremeSupremeLimited、pressureNextLimited、pressureNextNextLimited、temperatureSupremeLimitedEtc.systemparameterUpsetup；SensorerrordifferenceCalibrationfunction；5LineRelayHardComponentsConnectionIndicator Light；Overvoltage Protection、Overcurrent Protection、anti-ReverseWeldingProtection。This controller operates with high safety and reliability, and has low overall energy consumption.。

StationLinesystem

StationLinesystemmainlyByAir SourceSwitchsystem、Pipelinesystem、ConditioningPressuresystem、UsersStationPoint、monitoring And Alarm Systemcomposition。The layout is reasonable and centrally arranged for ease of operation and maintenance.。

power distributionsystem

AccordingCustomer RequirementsDesignElectricalPrincipleDiagram And WiringDiagram，HandleInvincibleSamefunctionelectricalComponentsdeviceInstallationinCabinetDomestic And ThroughWireConnection，Meet Customeron-siteUse。

PXK explosion-proof positive-pressure cabinetStandard

GB3836.1-2010《Explosive GasEnvironmentUsersElectricalequipment Part 1:explosion-proofGeneral Requirements》

GB3836.2-2010《Explosive GasEnvironmentUsersElectricalequipment Part 2:Flameproof Type"d"》

GB3836.3-2010《Explosive GasEnvironmentUsersElectricalequipment Part 3:Increased Safety Type"e"》

GB3836.4-2010《Explosive GasEnvironmentUsersElectricalequipment Part 4:Intrinsic SafetyType"i"》

GB3836.5-2004《Explosive GasEnvironmentUsersElectricalequipment no.5Part:Pressurized Type"P"》

GB3836.9-2006《Explosive GasEnvironmentUsersElectricalequipment no.9Part:PasteSealingType"m"》

GB12476.1-2013《Explosive DustEnvironmentUsersElectricalequipment Part 1:explosion-proofGeneral Requirements》

GB12476.5-2013《Explosive DustEnvironmentUsersElectricalequipment no.5Part:explosion-proofStandard"tD"》

StandardDesignProduction，ManagementCountryexplosion-proofTesting CenterInspectionqualified， And IssueDevelopExplosion-proof Qualification Certificate， And ThroughCountryQualityMonitor

AdministrationBatchStandard， And EnhancedHighlyIndustryProductProduction License， And ISO 9001Etc.seriesComplete certificates！

FAQ

1.Explosion-proof positive pressure cabinetmanufacturingprocess？

Answer: The cabinet body adopts a GGD structure, fabricated by laser cutting and welding of 2.5mm thick Q235 carbon steel plate or 304 stainless steel plate. After high-speed shot blasting, it undergoes high-voltage electrostatic powder coating. Foam rubber sealing gaskets are added at the door joints for dust and water resistance.。All electrical components inside the cabinet are equipped with operating mechanisms on the panel, and operation inside the cabinet is not permitted.。

2. What is the explosion-proof rating of the explosion-proof pressurization cabinet??

Answer: The explosion-proof ratings of the explosion-proof pressurization cabinet are ExdeibmbpzIICT4Gc and ExdeibmbpxIICT4Gc.。It meets the requirements for use in Zones 1 and 2 of explosive gas or dust areas.。

3. What is the pressure range of the explosion-proof pressurization cabinet?？

Answer: According to the national electrical explosion-proof standard GB3836.5-2010, the minimum pressure of the explosion-proof pressurization cabinet shall not be less than 50Pa, the maximum pressure shall not exceed 400Pa, and the normal working pressure range is 200Pa-300Pa.。

4. How is the heat dissipation problem of the explosion-proof pressurization cabinet solved?？

Answer: The explosion-proof pressurization cabinet can be equipped with the ventilation type, which provides continuous and uninterrupted air supply with excellent heat dissipation capability, suitable for electrical components with a total power below 20KW. For power above 20KW, an explosion-proof air conditioner needs to be installed.。

5. What are the requirements for the gas introduced into the explosion-proof pressurization cabinet?？

Answer: The gas introduced into the explosion-proof pressurization cabinet must be purified air or nitrogen, with an air source pressure of 0.2MPa to 0.8MPa. The user provides the air source, and typically the instrument air at the user's site can meet the requirements.。

6. What is the price of the explosion-proof pressurization cabinet?？

Answer: The price of the explosion-proof pressurization cabinet is divided into the bare cabinet price and the complete set price.。The bare cabinet price is calculated based on the cabinet dimensions; the larger the size, the higher the price. For example, a cabinet of 2000mm*800mm*600mm costs approximately 10,000 to 13,000 RMB. The complete set price consists of the bare cabinet price plus the price of electrical components and labor. The specific price is quoted based on the component list and electrical schematic diagram. For quotations, please contact the sales hotline: 15637170992.。

7. How does the explosion-proof pressurization cabinet system control and regulate the pressure inside the cabinet?？

Answer: After configuring the air source, connect the power supply.。Fully open the inlet valve, press the "Start" button, the inlet solenoid valve opens, and a 30-minute countdown begins, entering the air exchange state.。For power above 20KW, an explosion-proof air conditioner needs to be installed.

During use, if the pressure drops and falls below 100Pa, the explosion-proof alarm light will activate, entering the underpressure alarm state. If the air inlet fault is not resolved and the pressure inside the cabinet drops below 50Pa, the automatic control system will cut off the main power supply to the pressurized chamber. The system will remain in the underpressure alarm state (which can be cleared by pressing the "mute" button). This is the low-pressure protection and electrical interlock process.。

When the pressure in the pressurized chamber exceeds 400Pa, the pressure-limiting valve opens. After a period of time, the internal air pressure in the pressurized chamber gradually decreases, keeping the cabinet pressure within the normal pressure range, and then the valve closes. This process is the high-pressure limiting protection process.。