Meyer Burger WHITE - Electrical design and planning; Series connection; Parallel connection; Combined connection

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2.2 Certication and technical data of PV modules
ThePVmodulesaretestedandapprovedaccordingto
IEC61215-2016andIEC61730-2016.Pleaserefertothe
correspondingdatasheetsforthefurtherlistofcurrent
availablecerticates,aswellasalltechnicalandelectricaldata.
Thesecanbefoundonourwebsite
www.meyerburger.com.
2.3 Electrical design and planning
 •MeyerBurgerPVmoduleshavethreepre-installedbypass
diodes(non-replaceable)thatensureprotectionand
improvedperformanceintheshade.
 •ItisadvisabletoonlyconnectPVmodulesofthesame
module line and performance class.
 •Whendesigningthephotovoltaicsystem(PVsystem)and
itscomponents,asafetyfactorof1.25fortheelectrical
variables(V
OC, ISC)mustbeobserved,asamodulecan
supplyahighercurrentand/orhighervoltagethanunder
standardised test conditions due to special ambient
conditions.FortheMEYERBURGERGLASSmodule,use
highersafetyfactorsdependingontheapplicationdueto
thebifaciality.
 •ItisrecommendedtouseUVresistantPVcables.These
musthaveaminimumcross-sectionof4mm
2
(12AWG)
andbeheat-resistantuptoatleast90°C(194°F).
 •Identicalconnectionplugs(samemanufacturer,
sameplugtypes)mustbeusedfortheextensionand
connectioncables.MBIusesdierentplugtypes.
Theseareindicatedbynumberingonthemodulelabel.
Pleaserefertotheexplanationonthedatasheetforthe
corresponding plug type.
 •Shadingmustbeavoidedinordertoachieveoptimalsolar
radiation and maximise yield.
 •Theindividualsystemcomponents(PVmodules,fuses,
inverters,etc.)mustbecoordinatedaccordingtotheir
datasheets.
2.4 Series connection
 •ThePVmodulescanbeconnectedinseriestoachieve
thedesiredtotalvoltage.
 •Thecurrent(I
MPP)ofthePVmodulesconnectedinseries
shouldbeidentical,asthemaximumcurrentisdetermined
bythemodulewiththelowestcurrent.
 •Themaximumsystemvoltagemustbeobservedandcan
befoundinthecorrespondingmoduledatasheet.
2.5 Parallel connection
 •ThePVmodulescanbeconnectedinparalleltoachieve
thedesiredtotalcurrent.
 •Thevoltage(V
MPP)ofthePVmodulesconnectedin
parallelshouldbeidentical.
 •Thecablecross-sectionoftheextensioncablemustbe
adaptedtothemaximumcurrentcapacityofthewiring.
 •Topreventreversecurrent,anovercurrentprotection
deviceisalsorequired(e.g.blockingdiodesorstringfuse).
 •Withoutstringfuse,amaximumoftwostringsmaybe
connectedinparallel.Pleaseobservethevaluespeciedin
therelevantdatasheetfortheovercurrentprotectionrating.
2.6 Combined connection
 •Allcomponentsmustbecoordinatedwitheachother.
Theindividualconnectioninstructions,seriesandparallel
connection,mustbeobserved.
 •ThesamenumberofPVmodulesmustbeconnectedin
series(identicalstringvoltage).
• Additional safety precautions must be implemented to
protectthecablesandPVmodulesfromreversecurrent.
Observeallrequiredlocal,regional
and national (safety)regulations and
ordinancesaswellasalltechnicaland
electrical standardswhendesigningthe
PVsystem.