PreshipmentInspection of solar panel.docx

PreshipmentInspection of solar panel.docx

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PreshipmentInspectionofsolarpanel

Applus

SolarPanelInspectionprocedure

Contents

Applus1

SolarPanelInspectionprocedure1

1.Object3

2.Scope3

2.1Typeofpanel3

3.Relevantstandards4

3.1IEC61215:

20054

3.2IEC61730:

20044

3.3IEC62108:

20074

3.4IEEE1513:

20014

3.5UL1703:

20044

4.Testpoints4

4.1Certificationtest:

4

4.2Inspectiontest:

5

5.Inspectionprocedure6

5.1Inspectionsteps6

5.2Sampling7

5.3AcceptCriteria7

5.4Visualinspection:

7

5.5Flashinspection13

5.6ELinspection14

6.Loading15

6.1Checklists16

6.2Loadingprocedure16

1.Object

Thisdocumentintendstodescribealltheinspectionworksrelatedtosolarpanelqualitycontrolservices

2.Scope

Thisdocumentappliestotheinspectionofcrystallinesiliconterrestrialphotovoltaic（PV）modulesforlong-termoperationingeneralopen-airclimates.

2.1Typeofpanel

Polycrystalline

Monocrystalline

Amorph

3.Relevantstandards

3.1IEC61215:

2005

Photovoltaic（PV）modules–Designqualificationandtypeapproval

3.2IEC61730:

2004

Photovoltaic（PV）modulesafetyqualification

3.3IEC62108:

2007

Concentratorphotovoltaic（CPV）modulesandassemblies–Designqualificationandtypeapproval

3.4IEEE1513:

2001

Recommendedpracticeforqualificationofconcentratorphotovoltaic（PV）receivesectionsandmodules

3.5UL1703:

2004

Flat-platephotovoltaicmodulesandpanels

4.Testpoints

4.1Certificationtest:

Test

Title

Testconditions

4.1.1

Visualinspection

SeeDetailinspectionlistin6.4

4.1.2

Maximumpowerdetermination

Sinceasolarcellhasawavelength-dependentresponse,itsperformanceissignificantlyaffectedbythespectraldistributionoftheincidentradiation,whichinnaturalsunlightvarieswithseveralfactorssuchaslocation,weather,timeofyear,timeofday,orientationofthereceivingsurface,etc.,andwithasimulatorvarieswithitstypeandconditionsofuse.Iftheirradianceismeasuredeitherwithathermopile-typeradiometer（thatisnotspectrallyselective）orwithareferencesolarcell,thespectralirradiancedistributionoftheincominglightmustbeknowninordertomakethenecessarycorrectionstoobtaintheperformanceofthePVdeviceunderthereferencesolarspectraldistributiondefinedinthisstandardasspecified.Itisalsopossibleforauserorarraydesigner,usingthespectralresponseofthecells,tocomputewithinareasonabletolerancetheperformanceofaPVdevicewhenexposedtolightofanyotherknownspectralirradiancedistribution.

4.1.3

Insulationtest

Dielectricwithstandat1000Vd.c.+twicethemaximumsystemsvoltagefor1min.

Formoduleswithanareaoflessthan0.1m2theinsulationresistanceshallbenotlessthan400MΩ.Formoduleswithanarealargerthan0.1m2,themeasuredinsulationresistancetimestheareaofthemoduleshallbenotlessthan40MΩ·m2measuredat500Vormaximumsystemsvoltage,whicheverisgreater.

4.1.4

Measurementoftemperaturecoefficients

DetailsseeIEC61215

Determinethetemperaturecoefficientsofcurrent（α）,voltage（β）andpeakpower（γ）frommodulemeasurementsasspecified.Thecoefficientssodeterminedarevalidattheirradianceatwhichthemeasurementsweremade.Seeevaluationofmoduletemperaturecoefficientsatdifferentirradiancelevels.Forlinearmodules,theyarealsovalidoveranirradiancerangeof±30%ofthislevel.

4.1.5

Measurementofnominaloperatingcelltemperature（NOCT）

Totalsolarirradiance800Wm-2

Ambienttemperature:

20℃

Windseep:

1m·s-1

4.1.6

PerformanceatSTCandNOCT

Celltemperature:

25℃andNOCT

Irradiance:

1000and800W·m-2withIEC60904-3referencesolarspectralirradiancedistributions

4.1.7

Performanceatlowirradiance

Celltemperature:

25℃

Irradiance：

200W·m-2withIEC60904-3referencesolarspectralirradiancedistribution

4.1.8

Outdoorexposuretest

60kWh·m-2totalsolarirradiance

4.1.9

Hot-spotendurancetest

Five-hourexposureto1000W·m-2irradianceinworst-casehot-spotcondition

4.1.10

UVpreconditioningtest

15kWh·m-2totalUVirradiationinthewavelengthrangefrom280nmto385nmwith5kWh·m-2UVirradiationinthewavelengthrangefrom280nmto385nm

4.1.11

Thermalcyclingtest

50to200cyclesfrom-40℃to+85℃withSTCpeakpowercurrentduring200cycles

4.1.12

Humidity-freezetest

10cyclesfrom+85℃,85%RHto-40℃

4.1.13

Damp-heattest

1000hat++85℃,85%RH

4.1.14

Robustnessofterminationstest

SeedetailsinIEC60068-2-21

4.1.15

Wetleakagecurrenttest

Formoduleswithanareaoflessthan0.1m2theinsulationresistanceshallbenotlessthan400MΩ.Formoduleswithanarealargerthan0.1m2themeasureinsulationresistancetimestheareaofmoduleshallbenotless40MΩ·m2tobemeasuredat500Vormaximumsystemvoltage,whicheverisgreater

4.1.16

Mechanicalloadtest

3cyclesof2400Pauniformload,appliedfor1htofrontandbacksurfacesinturn.

Optionalsnowloadof5400Paduringlastfrontcycle

4.1.17

Hailtest

25mmdiametericeballat23m·s-1,directedat11impactlocations

4.1.18

Bypassdiodethermaltest

OnehoureatISCand75℃

Onehourat1.25timesISCand75℃

4.2Inspectiontest:

4.2.1Visualinspection

Purpose:

Detectanyvisualdefectsinthemodule.

Majorvisualdefects:

1.Verifyingalltheelementsandtheinstallation

2.Broken,cracked,ortornexternalsurfaces,includingsuperstrates,framesandjunctionboxes

3.Bentormisalignedexternalsurfaces,includingsuperstrates,substrates,framesandjunctionboxestotheextentthattheinstallationand/oroperationofthemodulewouldbeimpaired

4.Acrackinacellthepropagationofwhichcouldremovemorethan10%ofthatcell’sareafromtheelectricalcircuitofthemodule

5.Bubblesordelaminationsformingacontinuouspathbetweenanypartoftheelectricalcircuitandtheedgeofthemodule

6.Lossofmechanicalintegrity,totheextentthattheinstallationand/oroperationofthemodulewouldbeimpaired.

4.2.2Flashtest

Purpose:

ToconfirmthePVpanel’sreliabilityandtheveracityoftheflashdatareportgivenbyfromthefactory.

Equipment:

1.Aradiantsourcemachine（naturalsunlightorasolarsimulatorclassBorbettercalibratedinaccordancewithIEC60904-9）

2.APVreferencemodule（calibratedinaccordancewithIEC60904-2orIEC60904-6）

3.Atemperaturedetector（calibratedbylocallab）whichanaccuracyof±1℃andrepeatabilityof±0.5℃

4.2.3ELtest

Purpose:

Detectanyinvisibledefectsinthemodule,testspeciallyaimedtodetecthiddencracksinthesiliconcells

Equipment:

ELRXmachine

5.Inspectionprocedure

6.1Inspectionsteps

No.

Inspectionitems

Comments

Picture

1

Checktheflashreport

Flashreportisatestreportgivenbyfactory

2

Checkpackingsolution

Confirmthepackingsolutionisaccordingtothespecificationandingoodcondition

3

Sampling

Selectthequantityofinspectionproduct

4

Visualinspection

Detectanyvisualdefectsinthemodule

5

Dimensioninspection

Confirmthemoduleisaccordingtothespecification

6

ELinspection

Detectanyinvisibledefectsinthemodule

7

Powerinspection

Powerinspectionistakenbyaflashequipmentandshowstheperformanceofproduct

8

Loadingsupervising

Insuretheproductproperlystoredbeforeshipping

9

Inspectionpictures

Therecordsandthetraceabilityofinspectionwork

10

Recordunqualifiedmodulesnumber

Rejectproductcontrol

6.2Sampling

AccordingtoAQL（AcceptanceQualityLimit）&standardofcontact&clientagreementsrandomlytakesamplesfromeachpath.

6.3AcceptCriteria

AccordingtoAQL&clientrequirements

6.4Visualinspection:

Procedure

Carefullyinspecteachmoduleunderanilluminationofnotlessthan1000luxforthefollowingconditions:

a）Cracked,bent,misalignedortornexternalsurfaces

b）Brokencells

c）Crackedcells

d）Faultyinterconnectionsorjoints

e）Cellstouchingoneanotherortheframe

f）Failureofadhesivebonds

g）Bubblesordelaminationsformingacontinuouspathbetweenacellandtheedgeofthemodule

h）Tackysurfacesofplasticmaterials

i）Faultyterminations,exposedliveelectricalparts

j）Anyotherconditionswhichmayaffectperformance

Basicrequirements（Detailrequirementaccordingthecontactandclientagreements）

Description

1.

Chippedcell（Nomorethantwo

（2）chippedcellspermodule）

2.

Chippedcell（Max.Totalmissedsurface≤0.5cm2）

3.

Cellimpurities（Foreignconductingparticles;Area≤4mm²allowed）

4.

Cellimpurities（Foreignnon-conductingparticles;Area≤10mmdia.allowed）

5

Bubbles（Area≤5cm²allowedper.sq.meterofmodule）

6

Gapbetweencells（AdjustedinStringingmachine）

7

Gapbetweencells（Gap≥1.0mm）

8

Ribbonmisalignment（≤1mmallowed）

9

Ribbonmisalignment（Theribbonsoneachcellarenotallowedtotoucheachother,andconnectionshouldnotbeclosertothecelledgethanthelastgridline）

10

Brokencells（Notadmitted）

11

Crackedcells（Notadmitted）

12

Spacebetweencellsandframeedge（Celltoframe≥8±4mm/Notacceptediflessthan4mm）

13

Scratchesonglass（Noseriousscratchesordamagedglassallowed）

14

Scratchesonglass（Length>60mm,width>0.1mm,notallowed）

15

Scratchesonglass（Length<=60mm,width<=0.1mm,only1persquaremeterisallowed）

16

Ribbons（Brokenleadsnotadmitted）

17

Label（Missingbarcode）

18

Label（frontlabelCoveringcell）

19

Framescratches（Scratchlongerthan30mmisnotallowed）

20

Frameassembly（FramecornerGaponfrontside;Gap≥1mmnotallowed.）

21

Framedimensions（Accordingtomoduledatasheet）

22

Frameadhesivetape（Remainsafterpropercuttingwithknifeallowed.）

B