Guide to Equipment Certification Requirements - Intertek

1 HZL 0314 ATEX & IECExNORTH AMERICAC ontact Intertek with questions about Hazardous Locations & E xplosive Atmospheres testing and certi 1-800-WORLDLAB (967-5352) Hazardous Locations & Explosive AtmospheresGuide to Equipment Certification Requirements Typical North American MarkingemehcS enoZemehcS noisiviDClass I Zone 0 AEx ia IIC T4 GaHazard ClassProtection Concept CodeArea Classificatio nApproved to US StandardsClass I Division 1 Groups A&B T4 Temperature ClassGas GroupHazard ClassArea Classificatio nTemperature ClassGas GroupEquipmentProtectionLevelNORTH AMERICA and ATEX & iecex _Protection Concepts [NEC & CEC ] Electrical Equipment for Flammable Gas, Vapors and Mist - Class IGeneral RequirementsAExExUSUSCAC lass IClass IClass IDivision 1 & 2 Division 1 & 2 Division 1 & 2FM 3600 ISA 60079-0 CSA No. 60079-0 Increased SafetyAEx e (Gb)Ex e (Gb)USCAC lass IClass IZone 1 Zone 1 ISA 60079-7 CSA No.

2 60079-7No arcs, sparks or hot surfacesNon-IncendiveNINIUSCAC lass IClass IDivision 2 Division 2 ISA 3611 CSA No. 213 Non-SparkingAEx nA (Gc)Ex nA (Gc)USCAC lass IClass IZone 2 Zone 2 ISA 60079-15 CSA No. 60079-15 Explosion-proofXPXPUSCAC lass IClass IDivision 1 Division 1UL 1203 CSA No. 30 Contain the explosion and extinguish the ameFlame-proofAEx d (Gb)Ex d (Gb)USCAC lass IClass IZone 1 Zone 1 ISA 60079-1 CSA No. 60079-1 Powder FilledAEx q (Gb)Ex q (Gb)USCAC lass IClass IZone 1 Zone 1 ISA 60079-5 CSA No. 60079-5 Enclosed BreakAEx nC (Gc)Ex nC (Gc)USCAC lass IClass IZone 2 Zone 2 ISA 60079-15 CSA No. 60079-15 Intrinsic SafetyISISAEx ia (Ga)AEx ib (Gb)AEx ic (Gc) Ex ia (Ga)Ex ib (Gb) USCAUSUSUSCACAC lass IClass IClass IClass IClass IClass IClass IDivision 1 Division 1 Zone 0 Zone 1 Zone 2 Zone 0 Zone 1UL 913 / FM 3610 CSA No. 157 ISA 60079-11 ISA 60079-11 ISA 60079-11 CSA No.

3 60079-11 CSA No. 60079-11 Limit energy ofsparks and surfacetemperatureLimited EnergyCSA No. 60079-15 PressurizedType X Type X Type Y Type Y Type Z Type Z AEx px (Gb) Ex px (Gb) AEx py (Gb) Ex py (Gb) AEx pz (Gc) Ex pz (Gc) US CA US CA US CA US CA US CA US CA Class IClass IClass IClass IClass IClass IClass IClass IClass IClass IClass IClass IDivision 1 Division 1 Division 1 Division 1 Division 2 Division 2 Zone 1 Zone 1 Zone 1 Zone 1 Zone 2 Zone 2 NFPA 496 (FM 3620)NFPA 496 NFPA 496 (FM 3620)NFPA 496 NFPA 496 (FM 3620)NFPA 496 ISA 60079-2 CSA No. 60079-2 ISA 60079-2 CSA No. 60079-2 ISA 60079-2 CSA No. 60079-2 Keep ammable gas outRestricted BreathingAEx nR (Gc)Ex nR (Gc)USCAC lass IClass IZone 2 Zone 2 ISA 60079-15 CSA No. 60079-15 EncapsulationAEx ma (Ga) AEx mc (Gc) Ex m AEx mb (Gb) US US CA US Class IClass IClass IClass IZone 0 Zone 2 Zone 1 Zone 1 ISA 60079-18 ISA 60079-18 CSA No.

4 60079-18 ISA 60079-18 Oil ImmersionAEx o (Gb)Ex o (Gb)USCAC lass IClass IZone 1 Zone 1 ISA 60079-6 CSA No. 60079-6 Electrical Equipment for Combustible Dust - Class II & Class IIIG eneral RequirementsExUS CA US US Class IIClass IIClass III Division 1 & 2 Division 1 & 2 Division 1 & 2 Zone 20, 21, 22 FM 3600 CSA No. 25FM 3600 ISA 60079-0 Dust-IgnitionproofCAClass IIClass IIDivision 1 Division 1 UL 1203 CSA No. 25 Keepcombustibledust outDust ProtectedCAClass IIClass IIDivision 2 Division 2 ISA / FM 3611 CSA No. 25 EnclosureAEx ta (Da) AEx tb (Db)AEx tc (Dc) USUSUSCACAC lass IIClass IIIZone 20 Zone 21 Zone 22 Division 1 Division 1 ISA 60079-31 ISA 60079-31 ISA 60079-31 CSA No. 60079-31 CSA No. 60079-31 Fiber & Flying Protection US CA Class IIIC lass IIID ivision 1 & 2 Division 1 & 2 UL 1203 / ISA No. 25 EncapsulationAEx maD AEx mbD US US Zone 20 Zone 21 ISA 61241-18 ISA 61241-18 PressurizationType X Type XType YType YType ZType ZAEx pD US CA US CAUS CA US Class IIClass IIClass IIClass IIClass IIClass IIClass IIDivision 1 Division 1 Division 1 Division 1 Division 2 Division 2 Zone 21 NFPA 496 (FM 3620)NFPA 496 NFPA 496 (FM 3620)NFPA 496 NFPA 496 (FM 3620)NFPA 496 ISA 61241-2 Intrinsic SafetyISAEx iaD AEx ibD ISUSUS US USClass IIClass IIID ivision 1 Zone 20 Zone 21 Division 1 UL 913 / FM 3610 ISA 61241-11 ISA 61241-11UL 913 / FM 3610 Limitenergy ofsparks andsurfacetemperatureEx taEx taDivision 2 Division 2 Division 1Ex tbClass IIClass IIIC lass IIICACSA No.

5 60079-31Ex tbCAClass IIDivision 1 CSA No. 60079-31Ex tcCACSA No. 60079-31 CSA No. 60079-31Ex tcCA2221 Type of ProtectionCode (EPL)CountryClassDivision/ZoneStandard Basic Conceptof Protection____Class IIClass IIClass II__Ex ma CA Class IIClass IIClass IIDivision 1 Ex ma Ex mb Ex mb CA Class IIID ivision 1 CA Class IIDivision 1 CSA No. 60079-18 CSA No. 60079-18 CSA No. 60079-18CA Class IIID ivision 1 CSA No. 60079-18Ex mc CA Class IIDivision 2 CSA No. 60079-18Ex mc CA Class IIID ivision 2 CSA No. 60079-18 Class IIClass IIEx nL (Gc) CAClass I Zone 2 Note 1: For associated intrinsically safe apparatus suitable for installation in a hazardous location, the symbol for the type of protection ia or ib are enclosed within square brackets on the marking, AEx d [ia] IIC T4. For intrinsically safe apparatus not suitable for installation in a hazardous location, both the symbol Ex or AEx and the symbol for the type of protection ia or ib are enclosed within the same square brackets on the marking, [AEx ia] IIC; in this case, a temperature class is not 2: Zones 20-22 are not currently classi ed in the Canadian Electric Code (CEC ).

6 _ Enclosure Type Ratings [NEC & CEC ] noitinifeD feirB aerAepyT1 IndoorGeneral Purpose2 IndoorProtection against angled dripping water3, 3R, 3 SIndoor / OutdoorProtection against rain, snow4, 4 XIndoor / OutdoorProtection against rain, snow, hose directed water and corrosion (X only)5 IndoorProtection against angled dripping water, dust, fibers, flyings6 Indoor / OutdoorProtection against temporary submersion6 PIndoor / OutdoorProtection against prolonged submersion12, 12 KIndoorProtection against circulating dust, fibers, flyings13 IndoorProtection against circulating dust, fibers, flyings, seepageNote 4: Group E is applicable to Class II, Division 1 5: Metane is a Group IIA Gas for non-mining 6: Groups IIIA, IIIB and IIIC have not been adopted by the Canadian Electrical Code. Atmosphere Groups spuorG enoZspuorG noisiviDssalC drazaHecnatsbuSAcetyleneClass IFlammable GasesGroup AIICCIIB puorGnegordyHBIIC puorGenelyhtEAIID puorGenaporPAIID puorGenahteMCombustible Metal DustsClass IICombustible DustsGroup EIIICBIIIF puorGstsuD suoecanobraC elbitsubmoCCombustible Dusts not in Group E or F (Flour, Grain, Wood, Plastics, Chemicals)

7 Group GIIIBC ombustible Fibers and FlyingsClass IIIF ibers and FlyingsNot ApplicableIIIA456666 Classi cation of Divisions and ZonesHazard Level DefinitionsContinuous HazardDivision 1 Zone 0 / Zone 20A place in which an explosive atmosphere is continually presentIntermittent HazardZone 1 / Zone 21A place in which an explosive atmosphere is lik ely to occur in normal operationHazard Under Abnormal ConditionsDivision 2 Zone 2 / Zone 22A place in which an explosive atmosphere is not likely to occur in normal operation, but may occur for short periodsZone SchemeDivision SchemeTemperature Classi cationMax. Surface TemperatureNEC 500 CEC NEC 505 / IEC - Group II1T1T )F 248( C 0542T2T)F 275( C 003A2T)F 635( C 082B2T)F 005( C 062C2T)F 644( C 032D2T)F 914( C 5123T3T)F 293( C 002A3T)F 653( C 081B3T)F 923( C 561C3T)F 023( C 0614T4T)F 572( C 531A4T)F 842( C 0215T5T)F 212( C 0016T6T)F 581( C 58 Note 7: For Group I applications ( atex and iecex only), electrical apparatus has fixed temperature limits of 150 C (where layers of coal dust can form) and 450 C (where coal dust is not expected to form a layer).

8 7 Typical atex and iecex MarkingII 2 G Ex d IIC T4 Gb0359 Complies with European Directive* Equipment Protection LevelType of ProtectionEnvir onment* Equipment Category*Temperature Class (T1-T6)Gas GroupSpecific Marking for Explosion Protection* Equipment Group*Noti fied Body Number**ATEX onlyExplosion Protection(EPL) Equipment Categories & Protection LevelsATEX CategoryEquipment Protection LevelsTypical Equipment Zone Suitability1 GGaSuitable for Zones 0,1,21 DDaSuitable for Zones 20,21,222 GGbSuitable for Zones 1,22 DDbSuitable for Zones 21,223 GGcSuitable for Zone 23 DDcSuitable for Zone 22 ATEX Categories vs. Zones of UseEquipment Category ATEX 94/9/ECZone of UseGas, Vapors,& MistDustCategory 1 Zone 0, 1 & 2 Zone 20, 21 & 22 Category 2 Zone 1 & 2 Zone 21 & 22 Category 3 Zone 2 Zone 22 Note 8: Unless the explosion protection risk assessment states of ProtectionSymbolTypical IEC EPLT ypical Zone(s)IEC StandardBasic Concept of ProtectionElectrical Equipment for Gases, Vapors and Mists (G)General Requirements - - 0,1,2 IEC 60079-0 Optical RadiationOp prOp shOp isGb GaGa1,20,1,20,1,2 IEC 60079-28 IEC 60079-28 IEC 60079-28 Inherently safe protected by shutdownIncreased SafetyType n (Non-Sparking)e nAGbGc1,22 IEC 60079-7 IEC 60079-15No arcs, sparks or hot surfaces Enclosure IP54 or better1-97006 CEI2,1bGdContain the explosion, quench the flameType n (Enclosed Break)

9 NCGc2 IEC 60079-15 Quartz/Sand Fil ledqGb1,2 IEC 60079-5 Quench the flameIntrinsic Safetyia ib icGaGbGc0,1,21,22 IEC 60079-11 IEC 60079-11 IEC 60079-11 Limit the energy of sparks and surface temperaturesPressurizedpx pypzGbGbGc1,21,22 IEC 60079-2 IEC 60079-2 IEC 60079-2 Keep the flammable gas out Type n (Seali ng & Hermeti cally Sealed)Type n (Restricted Breathing)nCnRGcGc22 IEC 60079-15 IEC 60079-15 EncapsulationmambmcGaGbGc0,1,21,22 IEC 60079-18 IEC 60079-18 IEC 60079-18 Oil ImmersionoGb1,2 IEC 60079-6 Electrical Equipment for Combustible Dusts (D)General Requirements - - 20,21,22 IEC 60079-0 EnclosuretatbtcDaDbDc202122 IEC 60079-31 Standard protection for dusts, rugged tight enclosureIntrinsic SafetyiaibicDaDbDc202122 IEC 60079-11 Similar to enclosure, but with some relaxations if circuit inside is intrinsically safeEncapsulationmambmcDaDbDc202122 IEC 60079-18 Protection by encapsulation of incendive partsDpdezirusserPDb21,22 IEC 61241-4 Protection by pressurization of enclosureDc22 Non-Electrical EquipmentGeneral Requirements - - 0,1,2,20,21,22EN 13463-1 Low potential energyFlow Restricted Enclosure Flame-proof Enclosurefr d- -2,22 1,2,21,22EN 13463-2 EN 13463-3 Relies on tight seals.

10 Closely matched joints and tough enclosures to restrict the breathing of the enclosureConstructional Safetyc - 0,1,2,20,21,22EN 13463-5 Ignition hazards eli minated by good engineering methodsControl of Ignition Sourcesb - 0,1,2,20,21,22EN 13463-6 Control Equipment fitted to detect malfunctions1,2,21,22EN 60079-2EN 61241-4 Enclosure is purged and pressurized to prevent ignition sources from arising0,1,2,20,21,22EN 13463-8 Enclosure uses liquid to prevent contact with explosive atmosphereFlame-proofProtection Concepts [ atex and iecex ]Liquid Immersionk - Purged /p-PressurizedPurged /Ingress Protection Codes[IEC 60529]First Number (protect from solid bodies)Second Number (protect from water)0No Protection0No protection1 Objects > 50mm1 Vertical drip2 Objects > drip 3 Objects > > ng6 Dust-Tight6 Powerful jetting7 Temporary immersion8 Continuous immersionAtmosphere Groups [ATEX & iecex ]GroupEnvironmentLocationTypical SubstanceIGases, Vapors and MistsCoal Mining Methane (Fire damp)IIAS urface and Other LocationsMethane, Propane, , Acetylene, DustsSurface and Other LocationsCombustible flyingsevitcudnoc-noNBIIIIIICC onductiveHigh pressure and temperature water jet9 Electromagnetic Compatibility (EMC)MachineryPressure EquipmentLow Voltage (excludes Equipment for use in explosive atmospheres - see ATEX Annex II )Radio Equipment and Telecommunications Terminal Equipment (R&TTE)