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NEMADefinitionNEMAEnclosureTypesIPxxstNumeral:ProtectionAgainstSolids2ndNumeral:ProtectionAgainstLiquidsIPEnclosuresconstructedfor indoorusetoprovideadegreeofprotectiontopersonnelagainstincidentalcontactwithRating.IPRatings:ConvertingBetweentheTwoConversionOfNEMA EnclosureTypeRatingstoANSI/IECEnclosureClassificationDesignations(IP)(CannotbeUsedtoConvertANSI/IECClassificationDesignationstoNEMA TypeRatings)FirstCharacterIPOIP3IPSXNEMAEnclosureType3RXSecondCharacterK,IP2IPandNEMAEnclosureRatingsExplainedTempest EnclosureshavehistoricallybeenratedusingtheUSNEMA(NationalElectricalManufacturersAssociation)standards,witharatingofNEMA3R,andtested underUL50,sectionThishascausedunderstandableconfusioninternationally,sincetheNEMAstandardsarenotusedoutsidetheUnitedStatesNEMA DefinitionIPEquivalentIPEquivalentTheNEMATypesmeetorexceedthetestrequirementsfortheassociatedPurpose:IPandNEMAenclosureratings determinehowwelltheenclosuresofelectroniccomponentsresisttheinfiltrationofdustandmoisture.Thisincludesconsiderationsforconstructionrequirements, doorandcoversecurement,corrosionresistance,effectsoficing,gasketagingandoilresistance,andcoolingeffects.ThischartprovidesthedifferentNEMA ratingsandtheirdefinitionsaswellastheIPequivalentsanddefinitions=ProtectedagainstIPratingcodesareclassificationsusedtomeasurelevelsofprotection, suchaspreventingtheintrusionofsolidobjectsandliquidsfromenteringanenclosureormotorSolidRatingIP69K:Dust-tight;High-temperature,high-pressure sprayNEMAspecificationsarelessdetailedthanIPratings,butcovermoretypesofprotectionIPEnclosuresconstructedforindoorusetoprovideadegreeof protectiontopersonnelagainstincidentalcontactwiththeenclosedequipmentandtoprovideadegreeofprotectionagainstfallingdirt=Protectedagainstsolid foreignobjectsofmmindiameterandgreater9IPdegreesofprotectionvsNEMAIPRatingEquivalentNEMAvsIPEquivalencyChartIPDefinition Examples:IPDust-tight;Immersionuptometer.NEMAVS.IPSTANDARDSThereisno‘exact’matchbetweenNEMAandIPratings,butthesepairingsare theclosestassociationsbetweenthetwostandardsIPDefinitionIPIPIP3RIP3SIPIP4XIPIPIP6PIPandKIPIPNEMADefinitionIPDefinitionPurpose: IPandNEMAenclosureratingsdeterminehowwelltheenclosuresofelectroniccomponentsresisttheinfiltrationofdustandmoistureIPxxstNumeral: ProtectionTheNEMAEnclosureTypenotonlymeetstheIPEnclosureRating,butalsoexceedstheANSI/IECrequirementsbecausetheNEMATyperequiresan outdoorcorrosiontest;HowtoCompareNEMAandIPWhileIPratings,usedworldwide,coveronlyagainstwaterandsolidobjectingress,NEMAstandards covercorrosionresistanceandatmosphericNEMARatingsandIPEquivalencyChartNEMAREALThistableprovidesaguideforconvertingfromNEMA EnclosureTypeNumberstoIPRatingsArethetwoprotectionstandardscomparable?ImplementingandstandardizingIPdegreeofprotectionandNEMA EnclosureTyperolledintooneIPdegreesofprotectionandNEMAEnclosureTypesforcommandandsignalingdevicesNEMARatingsvs.