安规基本知识

2006-1-31BasicProductSafetyKnowledge01Dec20052006-1-32SafetyLogo-1EUROPEANCOMMUNITYCECANADACSACHINACCCUSA,CANADAULLISTEDUSA,CANADAUL()USA,CANADAUL()LOGO2006-1-33SafetyLogo-2RUSSIAGOSTNorway,Sweden,Finland,DenmarkAUSTRALIAC-TickGERMANYVDEGERMANYTUV-PSGERMANYTUV-RHEINLANDorLOGO2006-1-34SAFETYCertification-1z1\,,;2\;3\4\5\6\7\CBULCB2006-1-35SAFETYCertification-2z2.5~3,050S&EDOC9000~1200021EMC&LVDDOC400014FCC(DOC)TUV5300-8000CBTUVCB2.0~3.5304.5~6.560CB,,206.0~8.050WITNESS2006-1-36SafetyLabIntroducezTUV-PSACTAcceptanceofClient‘sTestingTUV-PSTUV-RHEINLANDULWITNESSTESTEMERSON2006-1-37WhyNeedCertificationzWhy:Significance1.LegalRequirements2.Marketforces3.Qualityimproved4.Indirectcost-down2006-1-38ContentsoftheCertificationzSafetyTestsasbelow:Inputtest,Heatingtest,Workingvoltagemeasuring,Clearance&Creepagedistance,Electricstrength,Earthingtest,Abnormaltest,andsoon.zMaterialsPreparationasbelow:-ProductSpecifications,(includeusersmanual)-TransformerandInductancespecifications,-SchematicdiagramPCBandmechanicallayout-BOMandCDF()-Photocopyoffinalproducts.etc.2006-1-39AboutProductSafetyStandardsSPSmainlyapplytothesestandardsasbelow:zSafetyStandards1ITEUL60950-1(UL1950wasoverdue),IEC60950,EN60950(havebeenupdatedto60950-1),GB49432AVIEC60065,EN60065,UL60065,GB88983IndustryControlEquipmentUL508,UL508C4Medical5Class2PowerUnitsandotherthanonesIEC60601-1,GB9706.1UL1310,UL1012zEMCStandardsEN55022,EN55024,GB4824,GB9254,IEC61000-4series,IEC61000-3-2,IEC61000-3-3andsoon2006-1-310BasicConceptsinIEC/EN60950-partI:EQ.classificationzzI(ClassIequipment):BasicInsulation+P.E.zII(ClassIIequipment):DoubleInsulationorReinforcedInsulationzIII(ClassIIIequipment):PowersupplyfromSELVcircuit2006-1-311EquipmentDemonstrationClassIandClassII2006-1-312BasicConceptsinIEC/EN60950-partII:CircuitsmentionedzSELVcircuit():42.4Vpeakor60VdcalwayszELVcircuit():42.4Vpeakor60Vdcz(LimitedCurrentCircuit):Undernormalorsinglefault,currentonitisalwayssafe.zTNV-1(TNV-1circuit):Normally,42.4Vpeakor60Vdc;OvervoltagefromNetworkpossiblezTNV-2(TNV-2circuit):Normally,42.4Vpeakor60Vdc;OvervoltagefromNetworkimpossiblezTNV-3(TNV-3circuit):Normally,42.4Vpeakor60Vdc;OvervoltagefromNetworkpossible2006-1-313BasicConceptsinIEC/EN60950-partIII:Insulationtypezz(FunctionalInsulation):z(BasicInsulation):z(SupplementaryInsulation):z(DoubleInsulation):z(ReinforcedInsulation):2006-1-314BasicInsulation&DoubleInsulationB/DinsulationLNLNFigure0Aa:ClassIequipmentb:ClassIIequipment2006-1-315BasicConceptsinIEC/EN60950-part:ClearanceandCreepagez(CreepageDistance):FigureF.4z(Clearance):FigureF.42006-1-316Clearance&CreepageDistance2006-1-317HowtodetermineCl.AndCr.z1).10z2).1830mm2505sz3).305sz(pollutiondegree,MaterialsGroup-CTI)z1234ClCr2006-1-318BasicSymbolONOFFDoubleInsulation(ClassII)EarthSymbolElectricShockHazardsMarkingIndoorUsePush-buttonsswitchPush-pushtypeswitchStand-bysymbol2006-1-319MarkingRequirementszModelLabel:shouldincludeallelements-Modelortypereference,-Inputratings(ratedvoltage,frequency,current),-ManufacturerorTrademark,-Symbolfornatureofsupply,forDConly,-SymbolforClassEquipment.zEarthingterminalsymbol:2006-1-320ModelLabelSampleVAPEL2006-1-321CriticalComponents&MaterialzWhereapplicable:-Prescribedbystandards,e.g.transformer-Hightemp,highenergy,e.g.windings-Isolationcomponents,e.g.X-,Y-cap,Optocoupler-limitinghazards,e.g.fuse,willhavehazardsiffail-connectorsandcouplersetc.…seenextfordetails*Allshouldbedocumentedwithapprovalcertificatesfromwellknowncertificationbodies.2006-1-322ListOfCriticalComponents(basedontelecom.powersupply)-Mainsplug-Mainsfuse-Mainsrectifier-Mainscord-X-cap,Y-cap-Relays-Appliancecoupler-Dischargerisistors-PCBmaterial-Enclosurematerial-Bulk-cap.-NTC-Internalplastics-Primaryconnectors-Fans-Applianceinlet/outlet-Optocouplers-Mainsswitch-Internalwiring-Transformers-Batteries-Varistors-Materialsintransformers-rfi-filter-Switchingtransistor(s)-Commonmodechoke-PFCchoke-Differentialmodechoke-Outputchokeetc.Note:X-cap:;Y-cap:.2006-1-323ImportantLimitationzVoltage/CurrentLimitation:Voltage42.4Vpeakor60VdcundersinglefaultOrforportableequipment,Vinput250VrmsOrIinputIratingx110%zEnergyLimitation:ataccessibleparts:240VAifvoltage2V.zTouchCurrent:3.5mAforClassI;0.25mAforClassII.zPEResistance:0.1OHM2006-1-324IsolationMethodszIsolationThru.Spacing:(Clearance&Creepage)Table2H,2J,2L.zIsolationthru.Insulator0.4mm2006-1-325InsulationThru.ThinSheetoror2006-1-326ApplicableTestsinIEC/EN60950-part1*Input:Positivedeviation10%*Earthing:1.5xIrated/12V/1min/0.1OHM(Irated16A)2xIrated/2min/2.5V(Irated16A)*CapacitanceDischarge:37%;1s/typeA,10s/typeB*TouchCurrent(Leakage):3.5mA,0.25mA*Heating:V=VRX110%or106%,90%;seeP30*Hi-pot(ElectricStrength):fromVpeak;seeP312006-1-327ApplicableTestsinIEC/EN60950-part2*OutputOverload:temp,fire,hipotetc.*TransformerOverload:*SecondaryLockedRotor:*ComponentAbnormal:*Ballpressure:20N/1h/125or40+Tmax.tested*SteadyForceTest:10N;30N/5s250N/5s/30mm2006-1-328ApplicableTestsinIEC/EN60950-part3*Impact:steelball,500g,50mm,130cmheight*DropTest:1mheight,7