NEMAvsIP-美国NEMA标准-和ISO-IP-绝缘等级对照表

CertifiGroupInc919-466-9238May2003Page1of6NEMAEnclosureTypes&IPCodesThepurposeofthisdocumentistoprovidegeneralinformationonthedefinitionsofNEMAEnclosureTypestoarchitects,engineers,installers,inspectorsandotherinterestedparties.ImportantNote:NEMARatingsaremaintainedthroughtestingandcertification.CorrelationtotheIPratingsdoesnotconfirmtheIPcodeassignedonaproductorenclosurehasbeentestedorisunderacertificationprogram.Definitions[fromNEMA250-1997]InNon-HazardousLocations,thespecificenclosureTypes,theirapplications,andtheenvironmentalconditionstheyaredesignedtoprotectagainst,whencompletelyandproperlyinstalled,areasfollows:Type1-Enclosuresconstructedforindoorusetoprovideadegreeofprotectiontopersonnelagainstincidentalcontactwiththeenclosedequipmentandtoprovideadegreeofprotectionagainstfallingdirt.Type2-Enclosuresconstructedforindoorusetoprovideadegreeofprotectiontopersonnelagainstincidentalcontactwiththeenclosedequipment,toprovideadegreeofprotectionagainstfallingdirt,andtoprovideadegreeofprotectionagainstdrippingandlightsplashingofliquids.Type3-Enclosuresconstructedforeitherindoororoutdoorusetoprovideadegreeofprotectiontopersonnelagainstincidentalcontactwiththeenclosedequipment;toprovideadegreeofprotectionagainstfallingdirt,rain,sleet,snow,andwindblowndust;andthatwillbeundamagedbytheexternalformationoficeontheenclosure.Type3R-Enclosuresconstructedforeitherindoororoutdoorusetoprovideadegreeofprotectiontopersonnelagainstincidentalcontactwiththeenclosedequipment;toprovideadegreeofprotectionagainstfallingdirt,rain,sleet,andsnow;andthatwillbeundamagedbytheexternalformationoficeontheenclosure.Type3S-Enclosuresconstructedforeitherindoororoutdoorusetoprovideadegreeofprotectiontopersonnelagainstincidentalcontactwiththeenclosedequipment;toprovideadegreeofprotectionagainstfallingdirt,rain,sleet,snow,andwindblowndust;andinwhichtheexternalmechanism(s)remainoperablewheniceladen.NEMA/IECCorrelationCertifiGroupInc919-466-9238May2003Page2of6Type4-Enclosuresconstructedforeitherindoororoutdoorusetoprovideadegreeofprotectiontopersonnelagainstincidentalcontactwiththeenclosedequipment;toprovideadegreeofprotectionagainstfallingdirt,rain,sleet,snow,windblowndust,splashingwater,andhose-directedwater;andthatwillbeundamagedbytheexternalformationoficeontheenclosure.Type4X-Enclosuresconstructedforeitherindoororoutdoorusetoprovideadegreeofprotectiontopersonnelagainstincidentalcontactwiththeenclosedequipment;toprovideadegreeofprotectionagainstfallingdirt,rain,sleet,snow,windblowndust,splashingwater,hose-directedwater,andcorrosion;andthatwillbeundamagedbytheexternalformationoficeontheenclosure.Type5-Enclosuresconstructedforindoorusetoprovideadegreeofprotectiontopersonnelagainstincidentalcontactwiththeenclosedequipment;toprovideadegreeofprotectionagainstfallingdirt;againstsettlingairbornedust,lint,fibers,andflyings;andtoprovideadegreeofprotectionagainstdrippingandlightsplashingofliquids.Type6-Enclosuresconstructedforeitherindoororoutdoorusetoprovideadegreeofprotectiontopersonnelagainstincidentalcontactwiththeenclosedequipment;toprovideadegreeofprotectionagainstfallingdirt;againsthose-directedwaterandtheentryofwaterduringoccasionaltemporarysubmersionatalimiteddepth;andthatwillbeundamagedbytheexternalformationoficeontheenclosure.Type6P-Enclosuresconstructedforeitherindoororoutdoorusetoprovideadegreeofprotectiontopersonnelagainstincidentalcontactwiththeenclosedequipment;toprovideadegreeofprotectionagainstfallingdirt;againsthose-directedwaterandtheentryofwaterduringprolongedsubmersionatalimiteddepth;andthatwillbeundamagedbytheexternalformationoficeontheenclosure.Type12-Enclosuresconstructed(withoutknockouts)forindoorusetoprovideadegreeofprotectiontopersonnelagainstincidentalcontactwiththeenclosedequipment;toprovideadegreeofprotectionagainstfallingdirt;againstcirculatingdust,lint,fibers,andflyings;andagainstdrippingandlightsplashingofliquids.Type12K-Enclosuresconstructed(withknockouts)forindoorusetoprovideadegreeofprotectiontopersonnelagainstincidentalcontactwiththeenclosedequipment;toprovideadegreeofprotectionagainstfallingdirt;againstcirculatingdust,lint,fibers,andflyings;andagainstdrippingandlightsplashingofliquids.Type13-Enclosuresconstructedforindoorusetoprovideadegreeofprotectiontopersonnelagainstincidentalcontactwiththeenclosedequipment;toprovideadegreeofprotectionagainstfallingdirt;againstcirculatingdust,lint,fibers,andflyings;andagainstthespraying,splashing,andseepageofwater,oil,andnoncorrosivecoolants.NEMA/IECCorrelationCertifiGroupInc919-466-9238May2003Page3of6Table2-1[FromNEMA250-1997]ComparisonofSpecificApplicationsofEnclosuresforIndoorNonhazardousLocationsTypeofEnclosureProvidesaDegreeofProtectionAgainsttheFollowingEnvironmentalConditions1*2*44X566P1212K13IncidentalcontactwiththeenclosedequipmentXXXXXXXXXXFallingdirtXXXXXXXXXXFallingliquidsandlightsplashing...XXXXXXXXXCirculatingdust,lint,fibers,andflyings**......XX...XXXXXSettlingairbornedust,lint,fibers,andflyings**......XXXXXXXXHosedownandsplashingwater......XX...XX.........Oilandcoola