Installation Guide

l Ifconnectingmoremodulesthanoptimizerinputsinparallel,useabranchcable.Somecommercial
poweroptimizermodelshaveadualinput.
l Positionthepoweroptimizercloseenoughtoitsmodulesothattheircablescanbeconnected.
l Makesuretousepoweroptimizersthathavetherequiredoutputconductorlength:

o
Minimizetheuseofextensionsbetweenpoweroptimizers.

o
Youcanuseextensioncablesbetweenrowsandfromtheendofstringtotheinverter.

o
Donotuseextensioncablesbetweenthemodulesandthepoweroptimizers,orbetweentwo
poweroptimizerswithinastring.
l Theminimumandmaximumstringlengthguidelinesarestatedinthepoweroptimizerdatasheets.
RefertotheDesignerforstringlengthverification.TheDesignerisavailableontheSolarEdgewebsite
athttp://www.solaredge.us/products/installer-tools/site-designer#/.
l Completelyshadedmodulesmaycausetheirpoweroptimizerstotemporarilyshutdown.Thiswill
notaffecttheperformanceoftheotherpoweroptimizersinthestring,aslongastheminimum
numberofunshadedpoweroptimizersconnectedinastringofmodulesismet.Ifundertypical
conditionsfewerthantheminimumoptimizersareconnectedtounshadedmodules,addmore
optimizerstothestring.
l Equipmentgroundingtighteningtorques:4-6AWG:45lb-in,8AWG:40lb-in,10-14AWG:35lb-in.
l Toallowforheatdissipation,maintaina2.5cm/1"clearancedistancebetweenthepoweroptimizer
andothersurfaces,onallsidesexceptthemountingbracketside.
Figure 4: Power optimizer clearance
NOTE
Theimagescontainedhereinareforillustrativepurposesonlyandmayvarydependingonproduct
models.
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00306-1.1
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Installation Guidelines