IEC 62788-2-1-2023光伏前板-背板新標(biāo)解讀及解決方案介紹（英文）-帖克清

IEC62788-2-1:2023光伏前板/背板新標(biāo)解讀及解決方案介紹JohnTie/帖克清德國萊茵TüV太陽能及商用產(chǎn)品服務(wù)ConstructionsofFrontsheetorBacksheetFilma)Singe-layera)Singe-layera1)monolithiclayerloBreakdownVoltageforreinforcBreakdownVoltageforreinforcFora1),single-layersheet:shallhforsystemvoltagesvoltages<600VdoesnotapplyTIorRTE(RTI)underadditionalconsiderationConstructionsofFrontsheetorBacksheetFilma)Singe-layerloVisualElectricalcharacteristicsThermalcharacterizationMechanicalcharacteristicsAcceleratedageingtestloFBST01-Visualinspection?30cmto50cmviewingdistance?Underilluminationlevel loFBST02–TensilepropertiesThematerialsrσB≥50%(retainedtensilestrength)isobtainedaftertest,andεB≥25%(absoluteelongationatbreak)isobtainedaftertest.loFBST03–BreakdownVoltageMethodA)thewithstandtest,inwhichthevoltageisincreaseduptoatargetlevel,andthenheldforoneminuteMethodB)directmeasurement,inwhichthevoltageisincreaseduntilbreakdownoccurs(orthecapacityofthetestdeviceisreached)electricstrengthfoloFBST03–BreakdownVoltagerDTIrDTI=tDTI/ttotal[VBD[VBD]adj=VBD*rDTI≥loFBST04–Distancethroughinsulation(DTI)Testspecimen:210mmx148mm(A5format)NOTEItinsteadprovidesthesmallestpossiblevalue(“worstcase”)fortheDTIuponapplicationofaBS/FSCategoryDCsystemvoltageandappropriatemin.thicknessinfinalapplicationDCsystemvoltage[kV]min.thicknessofinsulationinfinalapplication[mm]0,0300,0600,150,30FormaterialsthatdidnotpasstheDTItestaccordingtorequirementsthereportmentions“didnotpass”(insteadof“failed”)andinsulationthicknessmaybeevaluatedonmodulelevelloFBST04–Distancethroughinsulation(DTI)loFBST05–ComparativeTrackingIndex(CTI)ContactwiththesolderwireCTIIloFBST06–Thermalendurance4.4.1.24.4.1.3Thermalenduranceofsinglelayer4.4.1.24.4.1.3Thermalenduranceofcoatedlayers?MandrelltestorcuppingtestaccordingtoISO1520TestmethodrefertoIECTS62788-2.endmulti-layerconstructionsusinglayermaterialswithseparatelytestedTIorRTE(RTI)values,thethermaluranceratingofthemultilayersystemisderivedfromthelowestvalueofanyofthefilmcomponents.loFBST06–Thermalfailsafetest(2000-0/+24)hEvaluationperformanceElongationatbreakforMDandTDEvaluationperformanceTensiletestingRequirementsεB≥25%(absoluteelongationtobreak)RequirementsloFBST07–Damp-Heat(DH)testingProcedure–tesythetestprocedureMQT13ofIEC61215-2withconditions:tduration:(1000-0/+48)hreandafterDHtest,followingcharacterizationshallbeevaluated:silestrengthandelongationbreakdownvoltageforreinforcedinsulation.loFBST08–UVweatheringtestA3A3A3A3A3A3Chamberairtemperature45°Cor55°CforA1orA245°Cor55°CforA2Irradiance(rang:300nm~400nm)81W/m281W/m281W/m2BeforeandafterUVtest,followingcharacterizationshallbeevaluated:..loThankyouforyourattention!LEGALDISCLAIMERThisdocumentremainsthepropertyof.Itissuppliedinconfidencesolelyforinformationpurpofortherecipient.thisdocumentnoranyinformationordatacontainedthereinmaybeusedforanyotherpurposes,orduplicatedordisclosedinwhole