SolarEdge storedge User manual

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StorEdge Inverter
Installation Guide
ForSmartEnergyManagement
usingLGChembatteries
For Europe, APAC, Australia and South Africa
Version 1.1

Revision History
Version 1.1 (July 2018)
Clearanceforthreephaseinvertersinstalledside-by-side,outdoors:5cm/2”
Poweroptimizerclearance-noclearanceisrequiredonthemountingbracketside
Additionofreferencetotroubleshootingundetecteddevicesapplicationnote
Torqueforgroundingusingtheequipmentgroundingbus-bar:3.4N*M/30lb-in
Updateofproductnames
Additionofpossibilitytousecompatibleconnectorsfromthird-partymanufacturers
Recommendationtomountthepoweroptimizerinalocationprotectedfromdirectsunlight
Updatedwarningaboutsealingunusedpoweroptimizerinputconnectors
Maxdistancebetweenthebatteryandinverteris70ft/20m
RemovalofStorEdgeConnectionUnitReplacement
Additionofcaution-installationinsalineenvironment
Updateregardinguseofextensioncablesinpoweroptimizerinstallationguidelines
RemovalofrecommendationtoconnectthebatteryandsetDIPswitchwhenthebatteryisonthe
floor,foreasieraccess
AdditionoflowbatterySOEtroubleshooting
Additionofimportantsafetyfeature:restartbehaviorfunctionality
Additionofbatteryconnectionviaconduit
AdditionoflinktotheDesignerwebpage
Additionofbatterycharge/dischargeself-testandtroubleshooting
InPowerOptimizerInstallationchapter:
oRemovedreferencetorackingmodelsandtheirgroundingmethods
oRemovedmentioningoftracker
IninverterInstallationchapter:
oAddedacautionaboutnotalteringtheStorEdgeConnectionUnitenclosure:SolarEdgedoesnot
permitopeningorpuncturingtheStorEdgeConnectionUnitinanylocationotherthanthepre-
defineddrillguidelocations,orotherwisealteringtheconstructionoftheenclosure,asthismay
compromisesafetyandwillvoidthewarranty.
Connectionto/fromtheConnectionUnit:
o450VDCtoBATconnector(DC-andDC+connections)correctedintheconnectiondiagram
oAddedadiagramofLGbatteryconnectiontoinverterwith3DIPswitches
InConfigurationMenuOptions:
oPowerControlsection:
RemovedPhaseBalancelinkandinfo
AddedlinktoP(Q)diagramapplicationnote
oMaintenancesection:
Addedlinkstoapplicationnotes(UpgradingtheinverterusingSDcard;Isolationfault
troubleshooting;Arcfaultdetection)
RemovedOptimizerConf
InSystemConfigurationchapter:
StorEdge Inverter Installation Guide MAN-01-00390-1.1
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Revision History

oThecommunicationboardfirmware(CPU)versionmustbe3.xxxxandlateronallSolarEdge
invertersatthesamesite
oScreenschangedwhenconfiguringLGbattery
oStorEdgeControlinstructionsandmenuupdated
ConnectionUnitreplacement-removed
Updatedlinks
Technicalspecification-updated



Revision History
StorEdge Inverter Installation Guide MAN-01-00390-1.1
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Disclaimers
Important Notice
Copyright©SolarEdgeInc.Allrightsreserved.
Nopartofthisdocumentmaybereproduced,storedinaretrievalsystemortransmitted,inanyformor
byanymeans,electronic,mechanical,photographic,magneticorotherwise,withoutthepriorwritten
permissionofSolarEdgeInc.
Thematerialfurnishedinthisdocumentisbelievedtobeaccurateandreliable.However,SolarEdge
assumesnoresponsibilityfortheuseofthismaterial.SolarEdgereservestherighttomakechangestothe
materialatanytimeandwithoutnotice.YoumayrefertotheSolarEdgewebsite(www.solaredge.com)
forthemostupdatedversion.
Allcompanyandbrandproductsandservicenamesaretrademarksorregisteredtrademarksoftheir
respectiveholders.
Patentmarkingnotice:seehttp://www.solaredge.com/patent
ThegeneraltermsandconditionsofdeliveryofSolarEdgeshallapply.
Thecontentofthesedocumentsiscontinuallyreviewedandamended,wherenecessary.However,
discrepanciescannotbeexcluded.Noguaranteeismadeforthecompletenessofthesedocuments.
Theimagescontainedinthisdocumentareforillustrativepurposesonlyandmayvarydependingon
productmodels.
Emission Compliance
Thisequipmenthasbeentestedandfoundtocomplywiththelimitsappliedbythelocalregulations.
Theselimitsaredesignedtoprovidereasonableprotectionagainstharmfulinterferenceinaresidential
installation.Thisequipmentgenerates,usesandcanradiateradiofrequencyenergyand,ifnotinstalled
andusedinaccordancewiththeinstructions,maycauseharmfulinterferencetoradiocommunications.
However,thereisnoguaranteethatinterferencewillnotoccurinaparticularinstallation.Ifthis
equipmentdoescauseharmfulinterferencetoradioortelevisionreception,whichcanbedeterminedby
turningtheequipmentoffandon,youareencouragedtotrytocorrecttheinterferencebyoneormore
ofthefollowingmeasures:
Reorientorrelocatethereceivingantenna.
Increasetheseparationbetweentheequipmentandthereceiver.
Connecttheequipmentintoanoutletonacircuitdifferentfromthattowhichthereceiveris
connected.
Consultthedealeroranexperiencedradio/TVtechnicianforhelp.
Changesormodificationsnotexpresslyapprovedbythepartyresponsibleforcompliancemayvoidthe
user’sauthoritytooperatetheequipment.
Disclaimers
StorEdge Inverter Installation Guide MAN-01-00390-1.1
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Contents
Revision History 2
Version1.1(July2018) 2
Disclaimers 1
ImportantNotice 1
EmissionCompliance 1
Contents 2
HANDLING AND SAFETY INSTRUCTIONS 5
SafetySymbolsInformation 5
IMPORTANT INVERTER SAFETY INSTRUCTIONS 6
Chapter 1: Overview 9
TheStorEdgeSolutionComponents 9
AboutthisGuide 10
InstallationWorkflow 11
InstallationEquipmentList 12
InverterTransportandStorage 12
Chapter 2: Installing the Power Optimizers 13
Safety 13
PackageContents 13
InstallationGuidelines 14
Step1:MountingthePowerOptimizers 15
Step2:ConnectingaPVModuletoaPowerOptimizer 15
Step3:ConnectingPowerOptimizersinStrings 16
Step4:VerifyingProperPowerOptimizerConnection 17
Chapter 3: Installing the Inverter 18
InverterPackageContents 18
IdentifyingtheInverter 18
InverterInterfaces 19
StorEdgeConnectionUnit 20
InternalACBreakerandBypassSwitch 21
MountingtheInverter 21
Chapter 3: Installing the Backed-up Loads Panel and Meter 25
InstallingtheBacked-upLoadsPanel 25
EnergyMeterInstallation 26
Chapter 4: StorEdge Inverter Connections 27
Installingthe9VBatteryandFuses 29
ConnectingtheStringstotheInverter-StorEdgeConnectionUnitwithGlands 30
ConnectingtheStringstotheInverter-StorEdgeConnectionUnitwithConduits 30
ConnectingtotheBattery 32
DIPSwitchSetup 36
ConnectingCommunicationtotheMeter 38
BatteryGrounding 39
ConnectingtotheACGridandtoBacked-upLoads 40
Chapter 5: Commissioning the Installation 42
StorEdge Inverter Installation Guide MAN-01-00390-1.1
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Contents

RemovingtheInverterCover 42
Step1:ActivatingtheSystem 43
Step2:PairingPowerOptimizerstotheInverter 46
Step3:VerifyingProperActivation 47
Step4:ReportingandMonitoringInstallationData 48
TheMonitoringSystem 48
ProvidingInstallationInformation 48
MapperApplication 48
CreatingaSiteintheMonitoringPlatform 49
PaperTemplate 49
Chapter 6: User Interface 50
LCDUserButtons 50
InverterConfiguration–SetupMode 51
ConfiguringtheInverterUsingtheLCDUserButtons 51
ConfiguringtheInverterUsingtheLCDLightButton 54
ConfigurationMenuOptions 57
CountryandGrid 57
Language 57
Communication 57
PowerControl 59
Display 61
Maintenance 61
Information 62
StatusScreens-OperationalMode 63
InitialStatus 63
MainInverterStatus 63
EnergyMeterStatus 63
TelemetryStatus 64
IDStatus 64
ServerCommunicationStatus 65
IPStatus 65
ZigBeeStatus 65
Wi-FiStatus 66
GSMStatus 66
CommunicationPortsStatus 66
SmartEnergyManagementStatus 67
PowerControlStatus 67
BatteryStatus 68
Charge/DischargeProfileProgrammingStatus 69
Chapter 7: Setting Up Communication to the Monitoring Platform 70
CommunicationOptions 71
Ethernet 71
RS485 71
Wi-Fi 71
Cellular 71
Contents
StorEdge Inverter Installation Guide MAN-01-00390-1.1
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ZigBee 72
CommunicationConnectors 72
CreatinganEthernet(LAN)Connection 74
CreatinganRS485BusConnection 76
VerifyingtheConnection 79
Chapter 8: System Configuration 80
UpgradingtheInverterFirmwareVersion 80
ConfiguringtheRS485BusforBatteryandMeterConnection 81
ConfiguringStorEdgeApplications 84
BackupPowerApplications 84
SystemBasicConfiguration 84
SettingBackup-Only 86
SettingMSC+BackupPower 86
SettingCharge/DischargeProfile+BackupPower 87
VerifyingStorEdgeComponentsFunctionality 88
Appendix A: Troubleshooting 92
CommunicationTroubleshooting 92
Devicetype,numberandprotocolaredisplayedincorrectly 92
TroubleshootingEthernetCommunication 92
MeterTroubleshooting 93
<OK>isnotdisplayed 93
Anerrormessageisdisplayed 93
Power[Wh]Importvalueisnotadvancing 93
BatteryTroubleshooting 94
PowerOptimizerTroubleshooting 95
StorEdgeConnectionUnitLEDs 97
AdditionalStorEdgeTroubleshooting 98
StorEdge-relatedErrorsCodes 100
SystemWarnings 101
Appendix B: Opening Conduit Drill Guides 102
Appendix C: Replacing and Adding System Components 104
ReplacinganInverter 104
9VBatteryReplacement 104
FuseReplacement 106
BatteryReplacement 106
Appendix D: Mechanical Specifications 108
InverterDimensions 108
StorEdge Inverter for High Power Technical Specifications 110
StorEdge Inverter Installation Guide MAN-01-00390-1.1
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Contents

HANDLING AND SAFETY INSTRUCTIONS
Duringinstallation,testingandinspection,adherencetoallthehandlingandsafetyinstructionsis
mandatory.Failure to do so may result in injury or loss of life and damage to the equipment.
Safety Symbols Information
Thefollowingsafetysymbolsareusedinthisdocument.Familiarizeyourselfwiththesymbolsandtheir
meaningbeforeinstallingoroperatingthesystem.
WARNING!
Denotes a hazard. It calls attention to a procedure that, if not correctly performed or adhered to, could
result in injury or loss of life. Do not proceed beyond a warning note until the indicated conditions
are fully understood and met.
CAUTIO N!
Denotes a hazard. It calls attention to a procedure that, if not correctly performed or adhered to, could
result in damage or destruction of the product. Do not proceed beyond a caution sign until the
indicated conditions are fully understood and met.
NOTE
Denotes additional information about the current subject.
IMPORTANTSAFETYFEATURE
Denotes information about safety issues.
DisposalrequirementsundertheWasteElectricalandElectronicEquipment(WEEE)regulations:
NOTE
Discard this product according to local regulations or send it back to SolarEdge.


HANDLING AND SAFETY INSTRUCTIONS
StorEdge Inverter Installation Guide MAN-01-00390-1.1
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IMPORTANTINVERTER SAFETYINSTRUCTIONS
SAVETHESEINSTRUCTIONS
WARNING!
The inverter cover must be opened only after shutting off the inverter ON/OFF switch located at the
bottom of the inverter. This disables the DC voltage inside the inverter. Wait five minutes before
opening the cover. Otherwise, there is a risk of electric shock from energy stored in the capacitors.

WARNING!
Before operating the inverter, ensure that the inverter AC power cable and wall outlet are grounded
properly. This product must be connected to a grounded, metal, permanent wiring system, or an
equipment-grounding conductor must be run with the circuit conductors and connected to the equipment
grounding terminal or lead on the product.
WARNING!
Opening the inverter and repairing or testing under power must be performed only by qualified service
personnel familiar with this inverter.
WARNING!
Do not touch the PV panels or any rail system connected when the inverter switch is ON, unless
grounded.
WARNING!
SafeDC complies with IEC60947-3 when installing the system with a worst case SafeDC voltage (under
fault conditions) < 120V.
The worst case voltage is defined as: Voc,max+ (String Length-1)*1V, where:
Voc,max = Maximum Voc (at lowest temperature) of the PV module in the string (for a string with
multiple module models, use the max value)
String Length = number of power optimizers in the string
CAUTIO N!
This unit must be operated according to the technical specification datasheet provided with the unit.
CAUTIO N!
HEAVY OBJECT. To avoid muscle strain or back injury, use proper lifting techniques, and if required - a
lifting aid.
NOTE
The StorEdge Connection Unit is NEMA type 3R rated . Unused glands should be sealed with
appropriate seals.
NOTE
Use PV modules rated according to IEC 61730 class A.
StorEdge Inverter Installation Guide MAN-01-00390-1.1
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IMPORTANTINVERTER SAFETYINSTRUCTIONS

NOTE
The symbol appears at grounding points on the SolarEdge equipment. This symbol is also used in
this manual.
NOTE
A SolarEdge inverter may be installed in a site with a generator, however must not operate at the same
time as the generator. Operating an inverter and a generator simultaneously will void the warranty.
SolarEdge requires installing a physical or electronic interlock, which will prevent the generator and
inverter from operating simultaneously. Interlock procurement, installation, maintenance and support
are the responsibility of the installer. Damage to the inverter due to incorrect interlock installation or use
of an interlock that is incompatible with the SolarEdge system will render the SolarEdge warranty
invalid.
NOTE
The following warning symbols appear on the inverter warning label:
Risk of electric shock
Risk of electric shock from energy stored in the capacitor. Do not remove cover
until 5 minutes after disconnecting all sources of supply.
Hot surface – To reduce the risk of burns, do not touch.
WARNING!
Shutting off the AC breaker does not disable the DC voltage inside the inverter. To obtain safe DC
voltage, turn off the inverter ON/OFF switch and the StorEdge Connection Unit ON/OFF switch.
WARNING!
Before operating the system, ensure that the inverter has been grounded properly.
WARNING!
When handling the battery, adhere to all manufacturer safety instructions.
WARNING!
The battery should be powered OFF before and during wiring. Turn
OFF:
a.Thecircuitbreakerswitch
b.Theauxiliarypowersupplyswitch
Toreconnectpower,turnON:
a.Theauxiliarypowersupplyswitch
b.Thecircuitbreakerswitch

CAUTIO N!
This unit must be operated under the specified operating conditions as described in the technical
specifications supplied with the unit.
IMPORTANTINVERTER SAFETYINSTRUCTIONS
StorEdge Inverter Installation Guide MAN-01-00390-1.1
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NOTE
The battery used must be NRTL certified.
NOTE
For battery decommissioning and disposal, follow the manufacturer requirements and instructions.
IMPORTANTSAFETYFEATURE
During backup, if inverter output is overloaded or output current is higher than battery max allowed
output, the inverter will try to restart after 15 seconds (in DACH: 90 secnds). If this reoccurs 3 times, an
error message is displayed and the inverter should be restarted by turning the ON/OFF switch OFF and
then ON. Refer to StorEdge-related Errors Codes on page 100.
StorEdge Inverter Installation Guide MAN-01-00390-1.1
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IMPORTANTINVERTER SAFETYINSTRUCTIONS

Chapter 1: Overview
StorEdge™isSolarEdge'sall-in-onesolutionthatusesasinglephaseDCoptimizedinvertertomanageand
monitorbothsolarpowergenerationandenergystorage.Homeownersareautomaticallyprovidedwith
backuppowerintheeventofgridinterruptiontopowerpre-selectedloads.Solarenergycanbestoredin
abatteryforSmartEnergyManagementapplicationssuchasexportcontrol,offeringdemandresponse
andpeakshaving,andperformingtimeofuseshiftingforreducedelectricbills.
The StorEdge Solution Components
The StorEdge Inverter -Theinvertermanagesbatteryandsystemenergy,inadditiontoitstraditional
functionalityasaDC-optimizedPVinverter.
SolarEdgeoffersaStorEdgethefollowinginvertertypes:
oStorEdgeinverterforSingleBatteryorHighCapacity
oStorEdgeinverterforHighPower.
TheStorEdge Connection Unit,locatedatthebottomoftheinverter,allowssimpleinstallationand
connectivitytoothersystemcomponentsandincludesaDCSafetySwitch.
TheEnergy Meter-Themeterisusedbytheinverterforexport/consumptionreadings,andfor
SmartEnergyManagementapplications,suchas:exportlimitation,time-of-useprofileprogramming
andmaximizingself-consumption.
ThemeterisrequiredonlyinsystemsusingSmartEnergyManagementapplications(itisnotrequired
forStorEdgesystemsusedonlyforbackuppower).
One or two batteries-DCcoupledbatteriesdesignedtoworkwiththeSolarEdgesystem.
Figure 1: StorEdge system components
NOTE
Additional SolarEdge inverters (without batteries) can be connected with RS485. The inverters will
participate in export limitation and Smart Energy Management.
Connecting multiple inverters with RS485 master-slave connection may require an RS485
Expansion Kit (available from SolarEdge).
PV modules connected to power optimizers are not mandatory for charge/ discharge profile
programming and for backup power.
Chapter 1: Overview
StorEdge Inverter Installation Guide MAN-01-00390-1.1
9

About this Guide
Thisdocumentdescribesbasicsystemconnectionandconfiguration-PVsystem(power
optimizerstrings),oneinverter,onebattery,backed-uploadspanelandonemeter.
ForadditionalconfigurationoptionsrefertotheStorEdgeSolutionApplications-
ConnectionandConfigurationGuide,availableat
http://www.solaredge.com/sites/default/files/storedge_backup_applications_
connection_and_configuration_guide.pdf.
StorEdge Inverter Installation Guide MAN-01-00390-1.1
10
About this Guide

Installation Workflow
WheninstallingtheStorEdgesystem,followthisworkflowtoensureallthecomponentsareconnected
andfunctioningcorrectly.
Step 1-PV system installation-modules,poweroptimizersandinverter:
Poweroptimizers-asdescribedinInstallingthePowerOptimizersonpage13.
Inverter-asdescribedinInstallingtheInverteronpage18.
Step 2- Backed-up loads panel installation (required for Backup Power only):RefertoConnectingto
theACGridandtoBacked-upLoadsonpage40.
Step 3- Electricity Meter installation (required for Smart Energy Management only).RefertoEnergy
MeterInstallationonpage26.
Step 4 - Connecting PV strings (DC) to the inverter - RefertoConnectingtheStringstotheInverter-
StorEdgeConnectionUnitwithGlandsonpage30.
Step 5-Connecting the battery to the inverter and mounting the battery.Refertotheinstallation
informationinthemanufacturerdocumentation,andtoStorEdgeInverterConnectionsonpage27.
Step 6 - Connecting AC and backed-up loads to the inverter-connecttheloads(AC),andmeter.Refer
toStorEdgeInverterConnectionsonpage27.
Step 7 - Commissioning the inverter-Activatethesystemandpairthepoweroptimizers.Referto
CommissioningtheInstallationonpage42.
Step 8-Connecting to the monitoring platform.RefertoSettingUpCommunicationtotheMonitoring
Platformonpage70.
Step 9-System Configuration-ConfiguringtheRS485busandStorEdgeapplications.RefertoSystem
Configurationonpage80.
ThefollowingflowchartappearsthroughoutthisInstallationGuidetoassistwiththeinstallationsteps:
Chapter 1: Overview
StorEdge Inverter Installation Guide MAN-01-00390-1.1
11

Foradditionalinformation,referto
http://www.solaredge.com/sites/default/files/storedge__inverter_wiring_and_onsite_
checklist.pdf.
Installation Equipment List
StandardtoolscanbeusedduringtheinstallationoftheSolarEdgesystem.Thefollowing
isarecommendationoftheequipmentneededforinstallation:
Allenscrewdriverfor5mmscrewtypefortheinvertercover,StorEdgeConnectionUnitcover(if
applicable),andinvertersidescrews
AllenscrewdriverforM5/M6/M8screwtypes
Standardflat-headscrewdriversset
Non-contactvoltagedetector
Cordlessdrillorscrewdriverandbitssuitableforthesurfaceonwhichtheinverterwillbeinstalled.
Useofanimpactdriverisnotrecommended.
Appropriatemountinghardware(forexample:stainlessbolts,nuts,andwashers)forattaching:
othemountingbrackettothemountingsurface
othepoweroptimizertotheracking(notrequiredforsmartmodules)
MC4crimper
Wirecutters
Wirestrippers
Voltmeter
Forinstallingthecommunicationoptions,youmayalsoneedthefollowing:
ForEthernet:
oCAT5/6twistedpairEthernetcablewithRJ45connector.
oIfusingaCAT5/6cablespool:RJ45plugandRJ45crimper
ForRS485:
oFour-orsix-wireshieldedtwistedpaircable.
oWatchmakerprecisionscrewdriverset
Inverter Transport and Storage
Transporttheinverterinitsoriginalpackaging,facingupandwithoutexposingittounnecessaryshocks.
Iftheoriginalpackageisnolongeravailable,useasimilarboxthatcanwithstandtheweightofthe
inverter(refertotheinverterweightinthespecificationdatasheetprovidedwiththeunit),hasahandle
systemandcanbeclosedfully.
Storetheinverterinadryplacewhereambienttemperaturesare-25°C-+65°C/-13°F-149°F.
StorEdge Inverter Installation Guide MAN-01-00390-1.1
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Installation Equipment List

Chapter 2: Installing the Power Optimizers
Safety
Thefollowingnotesandwarningsapplywheninstallingthepoweroptimizers.Someofthefollowingmay
notbeapplicabletosmartmodules:
WARNING!
When modifying an existing installation, turn OFF the inverter ON/OFF switch, the Connection Unit and
the AC circuit breaker on the main AC distribution panel.
CAUTIO N!
Power optimizers are IP68/NEMA6P rated. Choose a mounting location where optimizers will not be
submerged in water.
CAUTIO N!
This unit must be operated according to the operating specifications provided with the unit.
CAUTIO N!
Cutting the power optimizer input or output cable connector is prohibited and will void the warranty.
CAUTIO N!
All PV modules must be connected to a power optimizer.
CAUTIO N!
If you intend to mount the optimizers directly to the module or module frame, first consult the module
manufacturer for guidance regarding the mounting location and the impact, if any, on module warranty.
Drilling holes in the module frame should be done according to the module manufacturer instructions.
CAUTIO N!
Installing a SolarEdge system without ensuring compatibility of the module connectors with the
optimizer connectors may be unsafe and could cause functionality problems such as ground faults,
resulting in inverter shut down. To ensure mechanical compatibility of the power optimizers’ connectors
with the PV modules’ connectors to which they are connected:
Use identical connectors from the same manufacturer and of the same type on both the power
optimizers and on the modules; or
Verify that the connectors are compatible in the following way:
oThe module connector manufacturer should explicitly verify compatibility with the SolarEdge
optimizer connector; and
oA third-party test report by one of the listed external labs (TUV, VDE, Bureau Veritas UL, CSA,
InterTek) should be obtained, verifying the compatibility of the connectors.
IMPORTANTSAFETYFEATURE
Modules with SolarEdge power optimizers are safe. They carry only a low safety voltage before the
inverter is turned ON. As long as the power optimizers are not connected to the inverter or the inverter is
turned OFF, each power optimizer will output a safe voltage of 1V.
Package Contents
Poweroptimizers
Stainlesssteelgroundinglockwashers
Chapter 2: Installing the Power Optimizers
StorEdge Inverter Installation Guide MAN-01-00390-1.1
13

Installation Guidelines
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.
Thestepsinthischapterrefertomoduleadd-onpoweroptimizers.Forsmart
modules,startfrom.Alsorefertothedocumentationsuppliedwiththesmart
modules.
Thepoweroptimizercanbeplacedinanyorientation.
Ifconnectingmoremodulesthanoptimizerinputsinparallel,useabranchcable.Somecommercial
poweroptimizermodelshaveadualinput.
Positionthepoweroptimizercloseenoughtoitsmodulesothattheircablescanbeconnected.
Makesuretousepoweroptimizersthathavetherequiredoutputconductorlength:
oMinimizetheuseofextensionsbetweenpoweroptimizers.
oYoucanuseextensioncablesbetweenrowsandfromtheendofstringtotheinverter.
oDonotuseextensioncablesbetweenthemodulesandthepoweroptimizers,orbetweentwo
poweroptimizerswithinastring.
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.com/products/installer-tools/site-designer#/.
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.
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 2: Power optimizer clearance
NOTE
The images contained herein are for illustrative purposes only and may vary depending on product
models.
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Installation Guidelines

Step 1: Mounting the Power Optimizers
Foreachofthepoweroptimizers1:
1.Determinethepoweroptimizermountinglocationandusethepoweroptimizer
mountingbracketstoattachthepoweroptimizertothesupportstructure.Itis
recommendedtomountthepoweroptimizerinalocationprotectedfromdirect
sunlight.Forframe-mountedpoweroptimizersfollowtheinstructionssuppliedwith
theoptimizers,orrefertohttps://www.solaredge.com/sites/default/files/installing_
frame_mounted_power_optimizers.pdf.
2.Ifrequired,markthemountingholelocationsanddrillthehole.
CAUTIO N!
Do not drill through the power optimizer or through the mounting holes. The drilling vibrations can
damage the power optimizer and will void the warranty.
3.AttacheachpoweroptimizertotherackusingM6(1/4'')stainlesssteelbolts,nutsandwashersor
otherappropriatemountinghardware.Applytorqueof9.5N*m/7lb*ft.
4.Verifythateachpoweroptimizerissecurelyattachedtothemodulesupportstructure.
5.Recordpoweroptimizerserialnumbersandlocations,asdescribedinStep4:ReportingandMonitoring
InstallationDataonpage48.
Step 2: Connecting a PV Module to a Power
Optimizer
NOTE
Images are for illustration purposes only. Refer to the label on the product to identify the plus and
minus input and output connectors.
Foreachofthepoweroptimizers:
ConnectthePlus(+)outputconnectorofthemoduletothePlus(+)inputconnectorofthepower
optimizer.
ConnecttheMinus(-)outputconnectorofthemoduletotheMinus(-)inputconnectorofthe
poweroptimizer.
Figure 3: Power optimizer connectors
1Not applicable to smart modules.
Chapter 2: Installing the Power Optimizers
StorEdge Inverter Installation Guide MAN-01-00390-1.1
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Step 3: Connecting Power Optimizers in Strings
Youcanconstructparallelstringsofunequallength,thatis,thenumberofpower
optimizersineachstringdoesnothavetobethesame.Theminimumandmaximum
stringlengthsarespecifiedinthepoweroptimizerdatasheets.RefertotheDesignerfor
stringlengthverification.
1.ConnecttheMinus(-)outputconnectorofthestring’sfirstpoweroptimizertothe
Plus(+)outputconnectorofthestring’ssecondpoweroptimizer.
2.Connecttherestofthepoweroptimizersinthestringinthesamemanner.
WARNING!
If using a dual-input power optimizer and some inputs are not used, seal the unused input
connectors with the supplied pair of seals.

Figure 4: Power optimizers connected in series
3.Ifyouintendtomonitortheinstallation,usingthemonitoringplatform,recordthephysicallocation
ofeachpoweroptimizer,asdescribedinProvidingInstallationInformationonpage48.
StorEdge Inverter Installation Guide MAN-01-00390-1.1
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Step 3: Connecting Power Optimizers in Strings

Step 4: Verifying Proper Power Optimizer
Connection
Whenamoduleisconnectedtoapoweroptimizer,thepoweroptimizeroutputsasafevoltageof1V
(±0.1V).Therefore,thetotalstringvoltageshouldequal1Vtimesthenumberofpoweroptimizers
connectedinseriesinthestring.Forexample,if10poweroptimizersareconnectedinastring,then10V
shouldbeproduced.
MakesurethePVmodulesareexposedtosunlightduringthisprocess.Thepoweroptimizerwillonlyturn
ONifthePVmoduleprovidesatleast2W.
InSolarEdgesystems,duetotheintroductionofpoweroptimizersbetweenthePVmodulesandthe
inverter,theshortcircuitcurrentISCandtheopencircuitvoltageVOCholddifferentmeaningsfrom
thoseintraditionalsystems.
FormoreinformationabouttheSolarEdgesystem’sstringvoltageandcurrent,referto
theVOCandISCinSolarEdgeSystemsTechnicalNote,availableontheSolarEdgewebsiteat:
http://www.solaredge.com/files/pdfs/isc_and_voc_in_solaredge_systems_technical_
note.pdf.

To verify proper power optimizer connection:
Measurethevoltageofeachstringindividuallybeforeconnectingittotheotherstringsortotheinverter.
Verifycorrectpolaritybymeasuringthestringpolaritywithavoltmeter.Useavoltmeterwithatleast
0.1Vmeasurementaccuracy.
NOTE
Since the inverter is not yet operating, you may measure the string voltage and verify correct polarity
on the DC wires inside the Connection Unit.
Fortroubleshootingpoweroptimizeroperationproblems,refertoPowerOptimizerTroubleshootingon
page95.
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Chapter 2: Installing the Power Optimizers
StorEdge Inverter Installation Guide MAN-01-00390-1.1
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