1、NFPA 791 Recommended Practice and Procedures for Unlabeled Electrical Equipment Evaluation 2014 Edition NFPA, 1 Batterymarch Park, Quincy, MA 02169-7471 An International Codes and Standards Organization IMPORTANT NOTICES AND DISCLAIMERS CONCERNING NFPA DOCUMENTS NOTICE AND DISCLAIMER OF LIABILITY CO
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29、AllRightsReserved. NFPA 791 RecommendedPracticeandProceduresfor UnlabeledElectricalEquipmentEvaluation 2014Edition This edition of NFPA791, Recommended Practice and Procedures for Unlabeled Electrical Equip- ment Evaluation, was prepared by the Technical Committee on Electrical Equipment Evalua- tio
30、n and released by the Technical Correlating Committee on National Electrical Code .It wasissuedbytheStandardsCouncilonJuly5,2013,withaneffectivedateofJuly25,2013,and supersedesallpreviouseditions. ThiseditionofNFPA791wasapprovedasanAmericanNationalStandardonJuly25,2013. OriginandDevelopmentofNFPA791
31、 The Technical Committee on Electrical Equipment Evaluation was organized in 2008 by NFPAin recognition of the need for requirements for the qualifications and competency of third-partiesperformingfieldevaluationsonelectricalproductsandassembliesandtoguide theprocessforfieldevaluations. Onemeanstode
32、monstrateconformanceofproductstoanapplicableproductsafetystandard is through certification. Historically, certification was accomplished through a laboratory investi- gationofaprototypeorinitialsampletodeterminecompliancewiththestandard,withasystemof ongoing follow-up inspections conducted to contin
33、ue certification. The result was a “Certifica- tion,”“Listing,”“Recognition,”or“Classification”oftheproductasdefinedbyvariousstandards, including NFPA70 , National Electrical Code .Theseprocesseswereformalizedinseveralinterna- tional standards, including ISO/IEC Guide 65, General Requirements for Bo
34、dies Operating Product CertificationSystems,andISO/IECStandard17020,GeneralCriteriafortheOperationofVariousTypesof Bodies Performing Inspection. As the marketplace evolved, more and more products needed to be evaluated differently from the above system because they were already installed at the inst
35、allation site. Another conditionthatdidnotfitthenormalprocessandrequiredsomeotherprocessofevaluation was that some products needed to be evaluated but were not produced in quantities that fit the traditional certification model economically. The alternative process to meet the needs for evaluation o
36、f unique, modified, or other equipment beyond the manufacturing process becameknownasa“fieldevaluation.”Theprocessusedforfieldevaluations,bythenatureof thework,isablendofISO/IECGuide65andISO/IECStandard17020. In 2008, a task group identified the need to create two documents covering the perfor- manc
37、e of field evaluations of electrical equipment and used the following document as the basisfordevelopment:RecommendedCompetencyGuidelinesforThirdPartyFieldEvaluationBodies, which was developed by theAmerican Council for Electrical Safety (ACES), a division of the AmericanCouncilofIndependentLaborato
38、ries(ACIL)(firstedition,November17,2005). The ACES document provided guidelines regarding the competency of firms that perform field evaluations. NFPA 791 and its companion document, NFPA 790, Standard for Competency of Third-Party Evaluation Bodies,providetheiruserswiththeabilitytoqualifywhocancomp
39、letefield evaluationsandhowfieldevaluationsspecificallyforelectricalproductsaretobecompleted. Nochangesweremadetothe2014editionofNFPA791otherthanupdatingthereference of NFPA70 , National Electrical Code ,fromthe2011editiontothe2014edition. 7911 NFPAandNationalFireProtectionAssociationareregisteredtr
40、ademarksoftheNationalFireProtectionAssociation,Quincy,Massachusetts02169.TechnicalCorrelatingCommitteeonNationalElectricalCode MichaelJ.Johnston, Chair NationalElectricalContractorsAssociation,MDIM MarkW.Earley, Nonvoting Secretary NationalFireProtectionAssociation,MA KimberlyL.Shea, Recording Secre
41、tary NationalFireProtectionAssociation,MA JamesE.Brunssen, Telcordia,NJUT Rep.AllianceforTelecommunicationsIndustry Solutions MertonW.Bunker,Jr., U.S.DepartmentofState,VAU WilliamR.Drake, ActuantElectrical,CAM WilliamT.Fiske, IntertekTestingServices,NYRT PalmerL.Hickman, NationalJointApprentice &Tra
42、iningCommittee,MDL Rep.InternationalBrotherhoodofElectricalWorkers DavidL.Hittinger, IndependentElectricalContractorsof GreaterCincinnati,OHIM Rep.IndependentElectricalContractors,Inc. DanielJ.Kissane, Legrand/Pass&Seymour,NYM Rep.NationalElectricalManufacturersAssociation JohnR.Kovacik, ULLLC,ILRT
43、NeilF.LaBrake,Jr., NationalGrid,NYUT Rep.ElectricLight&PowerGroup/EEI DannyLiggett, TheDuPontCompany,Inc.,TXU Rep.AmericanChemistryCouncil RichardP.Owen, Oakdale,MNE Rep.InternationalAssociationofElectricalInspectors Alternates ThomasL.Adams, EngineeringConsultant,ILUT (Alt.toN.F.LaBrake,Jr.) Lawren
44、ceS.Ayer, BizComElectric,Inc.,OHIM (Alt.toD.L.Hittinger) JamesT.Dollard,Jr., IBEWLocalUnion98,PAL (Alt.toP.L.Hickman) StanleyJ.Folz, MorseElectricCompany,NVIM (Alt.toM.J.Johnston) ErnestJ.Gallo, TelcordiaTechnologies,Inc.,NJUT (Alt.toJ.E.Brunssen) AlanManche, SchneiderElectric,KYM (Alt.toW.R.Drake)
45、RobertA.McCullough, Tuckerton,NJE (Alt.toR.P.Owen) MichaelE.McNeil, FMCBioPolymer,MEU (Alt.toD.Liggett) MarkC.Ode, ULLLC,AZRT (Alt.toJ.R.Kovacik) JamesF.Pierce, Intertek,ORRT (Alt.toW.T.Fiske) VincentJ.Saporita, CooperBussmann,MOM (Alt.toD.J.Kissane) Nonvoting RichardG.Biermann, BiermannElectricComp
46、any,Inc., IAIM (MemberEmeritus) TimothyJ.Pope, CanadianStandardsAssociation, CanadaSE Rep.CSA/CanadianElectricalCodeCommittee D.HaroldWare, LibraElectricCompany,OKIM (MemberEmeritus) MarkW.Earley,NFPAStaffLiaison Committee Scope:This Committee shall have primary responsibility for documents on minim
47、izing the risk of electricity as a source of electric shock and as a potential ignition source of fires and explosions. It shall alsoberesponsiblefortexttominimizethepropagationoffireandexplosionsduetoelectricalinstallations. 7912 UNLABELEDELECTRICALEQUIPMENTEVALUATION 2014 EditionTechnicalCommittee
48、onElectricalEquipmentEvaluation JulianR.Burns, Chair QualityPowerSolutions,Inc.,NCIM Rep.IndependentElectricalContractors,Inc. NancyW.Chilton, SchneiderElectric,NCM RonB.Chilton, NorthCarolinaDepartmentof Insurance,NCE Rep.InternationalAssociationofElectricalInspectors KeithD.Gershon, ElectricalSafe
49、tyInstitute,CASE GordonGillerman, NationalInstituteofStandards &Technology,MDC JosephP.Halferty,Jr., UnitedInspectionAgency,Inc., PAL Rep.InternationalBrotherhoodofElectricalWorkers MarkL.Lewandowski, TheProcter&GambleCompany, OHU Rep.AmericanChemistryCouncil CharlesF.Mello, ULLLC,WART RussellJ.Nichols, SGSNorthAmericaInc.,Consumer TestingServices,NJRT ShawnPaulsen, CSAGroup,CanadaRT KennethJ.Rempe, SiemensIndustryInc.,GAM Rep.NationalElectricalManufacturersAssociation JohnE.Staires, CityofTul
