Install Manual

Installation Guidelines
l Frame-mountedpoweroptimizersaremounteddirectlyonthemoduleframe,
regardlessofrackingsystem(rail-lessorwithrails).Forinstallationofframe-mounted
poweroptimizers,refertohttp://www.solaredge.com/sites/default/files/installing_
frame_mounted_power_optimizers.pdf.
l Thestepsinthischapterrefertomoduleadd-onpoweroptimizers.Forsmart
modules,startfromStep3:ConnectingPowerOptimizersinStringsonpage21Step3:
ConnectingPowerOptimizersinStringsonpage21.Alsorefertothedocumentationsuppliedwiththe
smartmodules.
l Thepoweroptimizercanbeplacedinanyorientation.
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
Donotuseextensioncablesbetweenamoduleandapoweroptimizer,betweentwomodules
connectedtothesameoptimizer,orbetweentwooptimizersotherthaninthecasesspecified
below.

o
Youcanuseextensioncablesbetweenpoweroptimizersonlyfromrowtorow,aroundobstacles
withinarow,andfromtheendofthestringtotheinverter,aslongasthemaximumdistanceis
notexceeded.
NOTE
l
The total conductor length of the string (excluding power optimizers’ conductors; including
home runs and necessary extensions between optimizers) should not exceed the following:
Inverter model Total conductor length ( from DC+ to DC- of the inverter)
SE9KUS, SE10KUS, SE20KUS 1000 ft. /300 m
SE14.4KUS, SE33.3KUS 2300 ft./ 700 m
l Use at least 11 AWG/ 4 mm² DC cables.
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https://www.solaredge.com/us/products/installer-tools/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.
-Three Phase System Installation Guide MAN-01-00527-1.1
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Installation Guidelines