What is the difference between the explosion-proof markings Exde and Exed in explosion-proof distribution boxes?，RelatedTrustedVeryMoreHumanForTheseTwoProductionExplosion-proof Marking没WhatMoreGreater的Concept，On-siteinsimpleComeintroductionNextTheseTwoPioneer的AreaClass:

First weHandleExplosion-proof MarkingInVariousProductionDigitFemaleGenerationTable的MeaningRemoveOpenComeintroduction，Explosion-proof Marking的FrontTwoProductionDigitFemaleExRelatedTrustedGreaterManufacturerForTheseTwoProductionDigitFemaleShouldShouldallInvincibleIsVery陌Generate， Because TheseIsExplosion-proof distribution boxAreaClassOrdinary Distribution BoxMostIntrinsic的InvincibleAspect，inExplosion-proof distribution box的Cabinet BodyTableAspectsallIsEngraveWithSo的mark，With的IsCabinet BodyModelWithFoundationItselfSelfwith的，With的IsBoxSimensWeldingSupremeRemove的。Because of the existence of these two letters, ordinary distribution boxes and explosion-proof distribution boxes can be directly distinguished by appearance.。

First, the third letter of the explosion-proof marking is also the key to the difference. If the third letter is e, then it goes without saying that the fourth letter is d, and this explosion-proof marking combined is Exed, which means that the enclosure of the explosion-proof distribution box is of the increased safety type, and the components installed inside are of the flameproof type.。

Second, the third letter of the explosion-proof marking is also the key to the difference. If the third letter is d, then it goes without saying that the fourth letter is e, and this explosion-proof marking combined is Exde, which means that the enclosure of the explosion-proof distribution box is of the flameproof type, and the components installed inside are of the increased safety type.。

Explosion-proof MarkingExd And Exe的AreaClass

One、TwoPioneerStableMeaningInvincibleSame

1、Flameproof Enclosure"d":Electricalequipment的OneVariousexplosion-proofTypeForm，ItsEnclosureAbilitywithstandThroughEnclosureanywhatjoint surface Or structureClearanceEntryEnclosureInternal的explosionPerformanceMixingOverallMineralinInternalexplosion And InvinciblebeDamage， And will notTriggerRiseExternalByOneVarious、MoreVariousGas Or EvaporateStationDescribeCost的Explosive GasEnvironment的PointGas。（according toGB3836-2010StableMeaning）

summary:a）EnclosureAbilitywithstandInternalexplosion；b）EnclosureInternalexplosionAfter-salesInvincibleAbility窜Blast。DomesticInstallationcomponentForOrdinarycomponent。

2. Increased safety "e": A type of explosion protection for electrical equipment, that is, additional measures are taken for the electrical equipment to improve its safety level, preventing the possibility of dangerous temperatures, arcs, and sparks under normal operation or specified abnormal conditions.。

In short, it does not itself produce the possibility of dangerous temperatures, arcs, and sparks internally, but only improves its safety level, such as increasing the protection rating.。The internal components must carry Ex-marked components (explosion-proof components).。

2、TwoallHousingstructureTypeFormInvincibleSame

1、Flameproof Type"d" Because RequiredwithstandInternalexplosionpressure，FaultItsRequiredDesignOneUsersInExplainReleaseAbilityQuality的VentilationLine（SimpleUnitSpeakThenIsFlange Face），HousingStandardAllWallThickCost-performanceIncreased Safety TypeThick。

2. Increased safety type "e": Because it does not itself produce the possibility of dangerous temperatures, arcs, and sparks internally, it has no flange surface.。

Three、ItsThey

1、OnlyWithFlameproof Type"d" And Intrinsic SafetyType"i"WithⅡA、ⅡB、ⅡCPositionClass； And Increased Safety TypeInvincibleClassⅡA、ⅡB、ⅡC。

2. As a wiring chamber, the entry device of the flameproof type "d" must be of the "d" type (flameproof) entry, and its sealing ring must be longer than that of the increased safety type sealing ring. The entry device of the increased safety type only needs to achieve an improvement in its safety level.。

3. The flameproof type "d" enclosure must undergo a hydrostatic test (ⅡB level: 1.5 MPa/10 seconds water pressure, ⅡC level: 2.0 MPa/10 seconds water pressure), while the increased safety type does not require this.。

4. The flameproof type "d" enclosure must undergo an impact test (withstanding the impact of a test object weighing 1 kg falling vertically from a height of 0.7 m), while the increased safety type enclosure does not undergo an impact test.。

The above is an introduction to the differences between the explosion-proof markings Exde and Exed in explosion-proof distribution boxes. For more related information, please visit Hualong explosion-proof at www.hlfbdq.com.