Xantrex Technology GT3.0 owner manual Communications Wiring for Inverters in Parallel

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Wiring the Inverter

Communications Wiring for Inverters in Parallel

Communications wiring between GT Inverters mounted in parallel allows information about each inverter and its associated PV array to be communicated between all of the inverters in the system. Information about the entire system can be displayed on any inverter LCD in the system.

For example, in a two-inverter system, if inverter #1 is producing 1500 W and inverter #2 is producing 2000 W, both inverters display a total system power of 3500 W. The cumulative energy produced by both inverters that day is also displayed.

You can still view information for an individual inverter in a system. See “To view unit-specific screens in a multiple unit system:” on page 5–5.

Without communications wiring each inverter in a system will only display information pertinent to the unit and its associated PV array.

Xanbus Network Technology

GT Inverters use Xanbus technology to communicate with other inverters in parallel. Communications wiring between inverters is laid out in a “daisy chain” pattern, each device on the network linked together with separate lengths of cable, as shown in Figure 3-7.

For more information on installing a Xanbus network, see the Xanbus System

Installation Guide, available at www.xantrex.com.

Xanbus-enabled	Xanbus-enabled	Xanbus-enabled
Device 1	Device 2	Device 3

Terminator

Terminator

Figure 3-7Daisy Chain Layout

CAUTION: Equipment damage

Connect only Xanbus-enabled devices.

Although the cabling and connectors used in this network system are the same as ethernet connectors, this network is not an ethernet system. Equipment damage may result from attempting to connect Xanbus to different systems.

3–12	975-0131-01-01

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Contents Xantrex Grid Tie Solar Inverter Page Xantrex Grid Tie Solar Inverter Date and Revision Scope AudienceOrganization Conventions Used Abbreviations and AcronymsRelated Information Page Important Safety Instructions Regulatory Compliance FCC Information to the UserTo locate the firmware version number Commissioning Test Verification and Commissioning TestPurpose Verification TestPage Contents Starting the Inverter Wiring the InverterMaintenance and Troubleshooting Monitoring the InverterSpecifications Warranty and Return InformationIndex Xiv Figures Xvi Tables Xviii Introduction About the Xantrex Grid Tie Solar Inverter Xantrex GT InverterStandard Features MpptOptional Features 2Main Features of the GT InverterSafety and Standards 3Safety and Data Label LocationsWiring Box standard on North American models Removable ComponentsOptional Heat Sink Cover and Fan Model Configurations 1GT Inverter ModelsGT3.0-aa 2-bb-230 Installation Single Inverter Installation Installation OptionsPlanning the Installation Multiple Inverter InstallationsSingle Inverter Installation Multiple Inverter InstallationInverter Location Equipment and Installation Recommendations PV Array RequirementsGeneral Recommendations Voltage Effect of Array Voltage Inverter Mode Voltage and Mppt Requirements1MPPT Operational Window Planning the Installation Lightning Protection Grounding RequirementsLong Distance Grounding AC GroundingXantrex GT Inverter Wiring Box 2Basic Grounding Overview3Long Distance Grounding Overview Routing the Wires 4Grounding With Extra Lightning Protection OverviewPlanning AC Wire Routing Planning DC Wire RoutingCircuit Breakers and Disconnect Switch Preparing for the InstallationWiring AC Circuit Breaker RequirementsOther Materials Needed AC/DC Disconnect SwitchGround Fault Fuse Equipment NeededMounting the Inverter OverviewDimensions and Knockout Locations Preparing to Mount the UnitKnockout Preparation Installing the Mounting Bracket 7Dimensions of GT Inverter and Knockout LocationsClearance Requirements 2Inverter Clearance RequirementsLocation Minimum Clearance Surfaces for Mounting To mount the unit using poles Mounting on Poles or RailsGround Floor Mounting on Wallboard, Siding or Concrete To mount the GT Inverter to wallboard, siding, or concreteMounting the Inverter on the Bracket Mounting a Single InverterTo mount the inverter on the mounting bracket Installing Accessories Installing the Fan AssemblyMounting Multiple Inverters in Parallel To attach the fan assembly to the inverter 12Attaching the fan assemblyTo connect the fan wires 13Location of Fan ConnectorInstalling the Heat Sink Cover To install the heat sink cover on the inverterTo remove the heat sink cover from the inverter Wiring the Inverter Accessing the Wiring Terminals To remove the wiring box cover2AC and DC Terminal Block Location in the Wiring Box Connecting the DC Wiring 3AC/DC Disconnect Switch PositionsTo wire the PV array to GT Inverter 1Torque Values for WiresWire Size Torque Xantrex GT Inverter Wiring Box 4DC Connections for Grounded PV ArrayConnecting the AC Wiring To wire the main utility service panel to the GT Inverter 5AC Connections from GT Inverter to Utility Service Panel Xantrex GT InverterService Panel Wiring BoxConnecting Inverters in Parallel DC and AC Wiring for Inverters in ParallelTo wire the PV array to GT Inverters in parallel 6Parallel GT Inverter DC and AC Wiring Communications Wiring for Inverters in Parallel Xanbus Network Technology9Xanbus RJ45 Ports in the GT Inverter Wiring Box Male Network TerminatorCabling Requirements RJ45 Connector Requirements2T568A Standard Wiring Conductor Name CAT 5 Cable Insulation ColorGuidelines for Routing the Network Cables Purchasing Network Components3Network Components and Part Numbers Wiring the Inverter 11Communications Wiring for GT Inverters in Parallel Page Starting the Inverter Checking the AC Utility Voltage Startup ProcedureChecking the PV Array DC Voltage To check the PV array DC voltageReplacing the Wiring Box Cover To replace the wiring box coverTo replace the front panel cover Starting up the GT Inverter To start up the inverterMonitoring the Inverter Monitoring the Front Panel Display 1Front Panel LCD Location1Startup Screens on GT Inverter Front Panel Display Startup ModeFront Panel Display Screens and What They Mean Display Duration Description3Normal Operation Screens for All GT Inverter Units 2Normal Operation Default ScreenTo view more Normal Operation information DisplayTo view unit-specific screens in a multiple unit system Offline Mode5Offline Mode Default Display Multiple Unit SystemMultiple Unit Fault ModeOffline Mode Screens for All GT Inverter Units 25kWhVoltageFault 8Fault Message ScreensAdditional Fault Mode Screens Special ScreensDisplay Description Status Indicator Lights 11Status Indicator LEDs10Special Message Screens LEDonMeansGreen LED Maintenance Factors Affecting GT Inverter Performance PV Array FactorsPerforming General Maintenance Replacing PartsOther Factors Replacing the Ground Fault Protection Fuse To replace a ground fault protection fuseReplacing the Inverter 1Location of Fuse, Front Panel Cover RemovedTo remove the inverter from the wiring box 2Inverter and Wiring Box Sections To replace the inverter on the wiring boxIdentifying Error/Fault Conditions and Solutions 1Troubleshooting the GT InverterSpecifications Output Electrical SpecificationsInput GT3.0 EuropeanAdjustable Disconnect Settings Output Power Versus Ambient TemperatureAdjustment Range Setting Efficiency Figure A-2Typical EfficiencyEnvironmental Specifications Mechanical SpecificationsUser Display Accessories GT Fan Kit includes fan assembly and heat sink coverWarranty and Return Information WarrantyDisclaimer ProductExclusions Return Material Authorization Policy Return ProcedureOut of Warranty Service Information About Your System Inverter DetailsPV Details Index Port 3-13, 5-7 Torquing 3-5, 3-10 wire sizes IX-4 Page Xantrex Technology Inc