Xantrex Technology GT3.0 owner manual Replacing the Ground Fault Protection Fuse

Page 90

Maintenance and Troubleshooting

Replacing the Ground Fault Protection Fuse

WARNING: Shock and fire hazard

Fuses should only be replaced by qualified service personnel. For continued protection against risk of fire, replace only with same type and ratings of fuse.

WARNING: Shock hazard

After disconnecting both AC and DC power from the GT Inverter, wait five minutes before attempting any maintenance or cleaning or working on any circuits connected to the inverter. Internal capacitors remain charged for five minutes after disconnecting all sources of power.

WARNING: Shock hazard

Dangerous voltages can exist inside the inverter. If there is leakage current from the POSITIVE PV lead to ground at the array, touching the NEGATIVE PV lead could cause a life-threatening shock even with the disconnect switch turned off. Ungrounded negative DC current on the PV NEGATIVE (–) wire presents an extreme shock hazard.

When the fuse has blown due to a fault, incorrect handling can be life-threatening. Use an insulated fuse puller.

If possible, cover PV arrays with an opaque material during this procedure.

The ground fault protection fuse will blow when severe leakage occurs between the PV array and earth ground, or when the system has been installed with faulty wiring. Before replacing the fuse, it is important to have qualified service personnel determine the cause of the ground fault.

To replace a ground fault protection fuse:

1.Remove the wiring box and front panel covers (described on page 2–23 and page 3–2). The ground fault protection fuse is located on the left side of the LCD panel, behind the front panel cover (Figure 6-1).

2.Using an insulated fuse puller, remove the blown fuse and replace it with a new AC/DC midget cartridge, rated 600 Vdc, 1A (Littelfuse KLKD 1 or equivalent).

3.Replace the front panel and wiring box covers (described on page 2–23 and page 4–3).

6–4	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