Apxteck AT?MG250 User manual

AT‐MG250UserManual–V1.02
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AT‐MG250Micro‐inverterInstallationManual
ApxteckRenewableTechnologyCo.,Ltd.
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AT‐MG250UserManual–V1.02
ThanksforchoosingApxteckMicro‐Inverter.Foryourownsafetyandtoensuretheoperationof
theequipment,pleasereadthismanualcarefullybeforeinstallationandoperation.
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Allrightsreserved:Apxteckreservestherighttochangetheproductandthecontentofthis
manualwithoutWARNING.Usersarerecommendedtovisitthecompanywebsite
www.apxteck.comformoreinformationaboutnewproductsandlatestversionsofuser
manuals.
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Forthefurtherinformationortechnicalsupport,pleasecontactus.
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ApxteckRenewableTechnologyCo.,Ltd.
Add.:Nr.245XinJunhuanRd.,MinhangDist.,Shanghai201114,China.
Tel.:+862151619916
Fax.:+862151619917
www.apxteck.com
[email protected]
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AT‐MG250UserManual–V1.02
TableofContents
GENERALINFORMATION .................................................................................................................7
GENERALINTRODUCTIONFORTHEAT‐MG250MICRO‐INVERTERSYSTEM ...........................................................7
SPECIFICATIONSSHEET&PARAMETERS ..........................................................................................................8
SYMBOLSUSED.........................................................................................................................................9
INSTALLATIONPROCEDURES............................................................................................................9
THINGSTOBECHECKEDBEFOREINSTALLINGAT‐MG250..................................................................................9
STEP1:AFFIXTHESERIALNUMBERTOSYSTEMMAP .....................................................................................10
STEP2:ATTACHTHEAT‐MG250TOTHERACK .............................................................................................10
STEP3:GROUNDTHESYSTEM ...................................................................................................................11
STEP4:CONNECTINGTHEAT‐MG250WITHPVMODULE .............................................................................11
STEP5:CONNECTINGTHEAT‐MG250TOTHEACBREAKER............................................................................12
GENERALCONNECTINGCONFIGURATION .....................................................................................................12
STEP6:COMMISSIONING .........................................................................................................................12
AT‐MG250REPLACEMENT..............................................................................................................13
STEP1:DISCONNECTDCCABLES................................................................................................................13
STEP2:DISCONNECTACCABLES................................................................................................................13
STEP3:LOOSELAY‐INLUGONAT‐MG250 ..................................................................................................14
STEP4:LOOSETHEMOUNTINGSCREWS.......................................................................................................14
ACCESSORIES.................................................................................................................................14
MAINTENANCE&LEDINDICATIONS...............................................................................................15
MAINTENANCE .......................................................................................................................................15
LEDINDICATIONS....................................................................................................................................15
APPENDIX .....................................................................................................................................16
FACTORYLIMITEDWARRANTY....................................................................................................................16
WIRINGDIAGRAM...................................................................................................................................18
SYSTEMMODULEMAP ............................................................................................................................19
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AT‐MG250UserManual–V1.02
GeneralInformation
GeneralIntroductionfortheAT‐MG250Micro‐invertersystem
Witharevolutionarytechnology,AT‐MG250Micro‐invertermaximizestheenergyconversion
fromphotovoltaicsolarmodules,enhancessystemreliability,andgreatlysimplifiesthe
installationandreducesthemaintenancetimeandcost.
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EachMicro‐inverterworksindependentlywithonePVmodule,eachPVmodulehasindividual
MaximumPeakPowerTracking(MPPT)andensuresthatthemaximumpowerisexportedtothe
utilitygridregardlessoftheperformanceoftheotherPVmodulesinthearray.WhenPV
modulesinthearrayareaffectedbyshading,soiling,orientation,ormismatch,the
Micro‐inverterensurestopperformancefromallPVmodulesinthearray.
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TheAT‐MG250Micro‐inverterisagridconnecteddevice.Employsadvanceddigitalcontrol
technologytoinvertDCtoACwhichhastheidenticalfrequencyandphaseanduploadittothe
utilitygrid.ThefeaturesofAT‐MG250Micro‐inverteraresimplifiedinstallation,reliability,
stability,maximumenergyharvestandintelligentmonitoring.Thecompletedself‐protection
functionsgreatlyimprovethestabilityandreliabilityofthesolarsystem.
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TheAT‐MG250Micro‐invertersysteminclude,
●AT‐MG250Micro‐inverter,
●AT‐PR4KSolarPowerRouter,
●PowerHubweb‐basedmonitoringandanalysisinterface.

AT‐MG250UserManual–V1.02
Specificationssheet&Parameters
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AT‐MG250UserManual–V1.02
SymbolsUsed
Toreducetheriskofelectricalshock,andtoensurethesafeinstallationandoperationofthe
Micro‐Inverter,pleasereadthismanualcarefullyandpayattentiontothesafetysymbolsappear
throughoutthismanual.
DANGER
Thisindicatesahazardoussituation,whichifnotavoided,willresultindeathorseriousinjury.
WARNING
Thisindicatesasituationwherefailuretofollowinstructionsmaybeasafetyhazardorcause
equipmentmalfunction.Useextremecautionandfollowinstructionscarefully.
NOTE
TheNOTEsymbolsinthismanualindicateimportantproductinformation.
InstallationProcedures
ThingstobeCheckedbeforeInstallingAT‐MG250
ToinstallaApxteckMicro‐invertersystem,pleasehaveyourinstallertoreviewfollowingitems
first:
●ReadthespecificationsandwarningsoftheAT‐MG250Micro‐inverter,
●TypeofroofmaterialsuitableforinstallPVsystem,
●BroadbandInternetconnectionisneededforgenerationdataupload,
●AvailableEthernetsocket,
●Sufficientpublicgridpoint.
DANGER
AnyonewhoinstallsorreplacestheAT‐MG250Micro‐invertermustbeauthorizedandlicensed
personnel,whocanensurethesafetypracticeofaqualifiedassembly,installationor
replacement.
WARNING
DonotconnecttheAT‐MG250Micro‐invertertotheutilitygriduntilyouhavecompletedallof
theinstallationproceduresasdescribedinthefollowingsections.
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AT‐MG250UserManual–V1.02
WARNING
AT‐MG250Micro‐invertermatchwithmostPVmodules,pleasemakesurethemodule’sspecs
suitablewithMicro‐inverter’srange.
Step1:AffixtheSerialNumbertoSystemMap
TheApxteckSystemMapdisplaylocationofeachMicro‐inverterinyoursystem.Youmaycreate
thevirtualarrayinPowerHubasperthismap.
a. PeelingtheserialnumberlabelsfromtheMicro‐inverters.
b. AttachingthelabelsontheSystemMap.
Version1.00SerialNr.
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NOTE
IfadditionalSystemMapneeded,pleasegotowww.apxteck.comtodownload.
Step2:AttachtheAT‐MG250totherack
a. Choosethesuitablemethodofmountingthemicroinverter.
b. Theremustbeatleast10mmclearancebetweentheenclosureoftheMicro‐inverter,the
roofsurfaceandtherearofthePVmodule.
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AT‐MG250UserManual–V1.02
Step3:GroundtheSystem
ConsiderusingWEEBtypeclipsforimprovedearthconnection.
WARNING
TheMicro‐invertersmustbegroundedaccordingtolocalstandards.Groundingregulationsmay
varybymarket,makesuretofollowlocalrequirements.
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Step4:ConnectingtheAT‐MG250withPVModule
ACcables
a. ConnecttheMicro‐inverterstoeachotherthroughACinterconnectioncables.
b. Listenforaclickasconnectorsengage.
c. CoveranyunusedACconnectorwithasealingendcap.
WARNING
Donotexceed16piecesofAT‐MG250Micro‐invertersconnectedperbranch.
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DCcables
a. ConnecteachPVmodulestotheMicro‐inverters.

AT‐MG250UserManual–V1.02
WARNING
Makesuretherightpolarityofeachconnector.
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Step5:ConnectingtheAT‐MG250totheACbreaker
GeneralConnectingConfiguration
UsetheACextensioncable(5meters)toconnecttheMicro‐invertertotheACbreakerinsidethe
distributionbox.Thecolorcodeofeachterminalisshownbelow.
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Yellow/Green‐PE
Brown‐L
LightBlue‐N
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L‐Brown
N‐LightBlue
PE‐
Yellow/Green
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WARNING
FollowthelocalelectricalcodesandNationalelectricalcodesforwiring.
Step6:Commissioning
a. Checkallabovesteps(1~5).
b. TurnontheACbreakeroftheMicro‐invertersystem.
WARNING
QualifiedpersonnelonlymayconnecttheApxteckMicro‐invertertothepublicgridafterreceiving
approvalfromtheelectricalutilitycompany.
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AT‐MG250UserManual–V1.02
WARNING
AT‐MG250Micro‐inverterisGrid‐connecteddevice.DonotconnectthisunittoanACsourceorany
electricappliances.
AT‐MG250Replacement
IftheApxteckMicro‐inverterinyoursystemcannotworkproperly,pleasefollowstepsbelowto
replacethedefectiveMicro‐inverter.
DANGER
AnyonewhoinstallsorreplacestheAT‐MG250Micro‐invertermustbeauthorizedandlicensed
personnel,whocanensurethesafetypracticeofaqualifiedassembly,installationor
replacement.
Step1:DisconnectDCcables
DisconnecttheDCcablesbetweentheMicro‐inverterandthePVmodule’sjunctionbox.
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Step2:DisconnectACcables
PressthehookontheACconnectortodisconnecttheACcables.

AT‐MG250UserManual–V1.02
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Step3:Looselay‐inlugonAT‐MG250
Step4:Loosethemountingscrews
Accessories
YouwillfindthecorrespondingaccessoriesandsparepartsforyourMicro‐invertersysteminthe
followingtable.Ifrequired,youcanorderthemfromApxtecklocaldistributor.

AT‐MG250UserManual–V1.02
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Maintenance&LEDIndications
Maintenance
Safetychecksshouldbeperformedatleastevery12monthsbyacompetentperson.Items
include,
a. Checktheoperationoftheinverter.SeethattheLEDisflashinginanormalstatus
b. Checkthecasingoftheinverterforanysignsofdamageorcorrosion.
c. Checktheinputandoutputcablesforsignsofcorrosion,rodentdamageoroverheating.
d. Checktheconditionofheconnectorforsignsofcorrosionoroverheating.
e. CheckthePVmodulesforbuildupofdebrisoranyheatspots.
LEDIndications
YoucanchecktheAT‐MG250Micro‐Inverter’sLEDtodetecttheoperationconditions.
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AT‐MG250UserManual–V1.02
Appendix
FactoryLimitedWarranty
ApxteckMicro‐invertersandPVPowerRouteraredesignedtobehighlyreliable,haveaverylong
lifefortheiroriginallyintendedpurpose,abletowithstandnormaloperatingconditions
andordinarywearandtearincompliancewithallApxteckuserandinstallationmanualsand
instructions.TheApxtecklimitedproductwarrantycoversdefectsinworkmanshipandmaterials
foraperiodoftwenty‐fiveyears(forMicro‐inverter)andaperiodoffiveyears(forPVPower
Router)subjecttothetermsandconditionsherein.

ThiswarrantyisprovidedtothepurchaseroftheApxteckproduct,andthewarrantyperiod
beginswiththedateofsale.ThewarrantyisvalidforownersofinstalledsystemsusingApxteck
Micro‐inverterandPVPowerRouter.

DuringtheWarrantyPeriod,ApxteckRenewableTechnologyCo.,Ltd.will,atitsoption,repairor
replacedefectiveApxteckproductfreeofcharge,subjecttoApxteckverificationofdefect(s)
coveredbythisLimitedWarranty.Apxteckwill,atitsoption,usenewand/orreconditionedparts
inrepairingorreplacingdefectiveproduct.Apxteckmayatitsdiscretionusepartsorcomponent
ofitschoosingtorepairorreplacethedefectiveproductasoriginalcomponentsmaynolonger
bepracticallyavailableand/ornewcomponentsand/ordesignshavesupersededthedefective
Apxteckproduct.

RepairedorreplacedApxteckproductcontinuetobewarrantedfortheremainingtermofthe
originalwarranty.

ThisLimitedWarrantydoesincludethecostofshippingdefectivemicro‐inverterstoApxteckand
thereturnofrepairedorreplacementmicro‐invertersunderApxteck’instructionsandusinga
freightcarrierofApxteck’choosing.ThisLimitedWarrantydoesnotextendbeyondtheoriginal
costoftheApxteckMicro‐inverter.

ToobtainrepairorreplacementserviceunderthisLimitedWarranty,thecustomermustcomply
withthefollowingpolicyandprocedure:

AReturnMerchandiseAuthorizationNumber(RMA)mustbeobtainedfromApxteckRenewable
TechnologyCo.,Ltd.beforereturninganyproductforrepairorreplacement.ToissuetheRMA,
Apxteckrequires:

•Proof‐of‐purchaseoftheDefectiveProductfromApxteck,
•ModelandSerialnumberoftheDefectiveProduct,
•Detaileddescriptionofthedefectastheformneedtobefilled
•Shippingaddressforreturnoftherepairedorreplacementproduct.

Alldefectiveproductauthorizedforreturnmustbereturnedinpackagingthatissuitably
protectiveoftheproduct.

TheAPXTECKLimitedProductWarrantydoesnotapplyto,andApxteckwillnotberesponsible
for:

1) ThecoststoanalyseanddiagnoseaMicro‐inverter(orPVPowerRouter)failureatthe

AT‐MG250UserManual–V1.02
installationbytheinstallerorsystemownerarenotcovered.

2) Laborcoststoun‐installdefectiveApxteckMicro‐inverters(orPVPowerRouter)or
re‐installingrepairedorreplacedApxteckMicro‐inverters(orPVPowerRouter)arenot
covered.

3) ApxteckisnotresponsibleforreturnedMicro‐inverters(orPVPowerRouter)lost,damaged
ormishandledintransit.

4) Micro‐inverters(orPVPowerRouter)thathavebeenmisused,neglected,tamperedwith,
altered,disassembled,modifiedorotherwisedamaged,eitherinternallyorexternallyare
notcovered.

5) Micro‐inverters(orPVPowerRouter)thathavebeenimproperlyinstalled,operated,handled
orused,includinguseunderconditionsforwhichtheproductwasnotdesigned,operatedin
anymannerthatexceedsitsspecification,useinanunsuitableenvironment,oruseina
mannercontrarytotheApxteckuserandinstallationmanualsorinviolationofapplicable
lawsorregulationsareexcluded.

6) Micro‐inverters(orPVPowerRouter)thathavebeensubjectedtofire,submersioninwater,
generalizedcorrosion,biologicalinfestations,actsofGod,orinputvoltagethatcreates
operatingconditionsbeyondthemaximumorminimumlimitslistedintheApxteck
Micro‐inverter(orPVPowerRouter)specificationsorcertificationrequirementsdocuments,
includinghighinputvoltagefromgeneratorsorlightningstrikesarenotcovered.
7) Micro‐inverters(orPVPowerRouter)thathavebeensubjectedtoincidentalorconsequential
damagecausedbydefectsofothercomponentsofthesolarsystemarenotcovered.
8) Micro‐inverters(orPVPowerRouter)wheretheoriginalidentificationmarkings(including
trademarkorserialnumber)havebeendefaced,altered,orremoved.

ThisLimitedWarrantydoesnotcovercostsrelatedtotheremoval,installationor
troubleshootingofthecustomer'selectricalsystems.

THELIMITEDWARRANTYISTHESOLEANDEXCLUSIVEWARRANTYGIVENBYAPXTECKAND,
WHEREPERMITTEDBYLAW,ISMADEEXPRESSLYINLIEUOFALLOTHERWARRANTIES,
EXPRESSORIMPLIED,STATUTORYOROTHERWISE,INCLUDING,WITHOUTLIMITATION,
WARRANTIESOFTITLE,QUALITY,MERCHANTABILITY,FITNESSFORAPARTICULARPURPOSE
ORNON‐INFRINGEMENTORWARRANTIESASTOTHEACCURACY,SUFFICIENCYOR
SUITABILITYOFANYTECHNICALOROTHERINFORMATIONPROVIDEDINMANUALSOROTHER
DOCUMENTATION.INNOEVENTWILLAPXTECKBELIABLEFORANYSPECIAL,DIRECT,
INDIRECT,INCIDENTALORCONSEQUENTIALDAMAGES,LOSSES,COSTSOREXPENSES
HOWEVERARISING,WHETHERINCONTRACTORTORT,INCLUDINGWITHOUTLIMITATIONANY
ECONOMICLOSSESOFANYKIND,ANYLOSSORDAMAGETOPROPERTY,ORANYPERSONAL
INJURY.

TotheextentanyimpliedwarrantiesarerequiredunderapplicablelawtoapplytotheAPXTECK
product,suchimpliedwarrantiesshallbelimitedindurationtothewarrantyperiod,tothe
extentpermittedbyapplicablelaw.Someregionsdonotallowlimitationsorexclusionson
impliedwarrantiesoronthedurationofanimpliedwarrantyoronthelimitationorexclusionof
incidentalorconsequentialdamages,sotheabovelimitation(s)orexclusion(s)maynotapply.
ThisLimitedWarrantygivestheownerspecificlegalrights,andtheownermayhaveotherrights
thatmayvaryfromregiontoregion.

AT‐MG250UserManual–V1.02
WiringDiagram

AT‐MG250UserManual–V1.02
SystemModuleMap