Xantrex Technology GT3.0

Connecting Inverters in Parallel

975-0131-01-01 3–11

Figure 3-6

Parallel GT Inverter DC and AC Wiring

Contents

Main Page Page Page About This Manual Scope Audience Organization Conventions Used The following conventions are used in this guide. Abbreviations and Acronyms WARNIN G CAUTION Related Informatio n Page Important Safety Instructions Regulatory Compliance FCC Information to the User Verification and Commissioning Test Page Contents Important Safety Instructions 1 2 Introduction Page Page Page Figures Page Tables Page 1 About the Xantrex Grid Tie Solar Inverter Xantrex GT Inverter Standard Features Optional Features Safety and Standards Removable Components Wiring Box (standard on North American models) Optional Heat Sink Cover and Fan Model Configurations 2 Installation Options Single Inverter Installation Multiple Inverter Installations Planning the Installation Planning the Installation Figure 2-1 Installation Options Overview Xantrex GT Inverter #1 Xantrex GT Inverters Inverter Location PV Array Requirements General Recommendations Equipment and Installation Recommendations Voltage and MPPT Requirements Guidelines for Matching PV Array Size to Xantrex Grid Tie Solar Inverter Input Grounding Requirements AC Grounding PV Grounding Long Distance Grounding Lightning Protection Figure 2-2 Basic Grounding Overview Xantrex GT Invert er Wiring Box PV Array Installation Figure 2-3 Long Distance Grounding Overview PV Array Xantrex GT Inverter Wiring Box Routing the Wires PV Array Planning AC Wire Routing Planning DC Wire Routing Preparing for the In stallation Wiring Circuit Breakers and Disconnect Switch AC Circuit Breaker Requirements AC/DC Disconnect Switch Other Materials Needed Equipment Needed Mounting the Inverter Overview WARNING: Fire, Shock and Energy Hazards Preparing to Mount the Unit Dimensions and Knockout Locations Knockout Preparation Installing the Mounting Bracket Clearance Requirements Surfaces for Mounting WARNING: Personal injury WARNING: Explosion hazard Mounting on Poles or Rails Mounting on Wallboard, Siding or Concrete Mounting the Inverter on the Bracket Mounting a Single Inverter Mounting Multiple Inverters in Parallel Installing Accessories Installing the Fan Assembly Page Page Installing the Heat Sink Cover 3 Accessing the Wiring Terminals Page Connecting the DC Wiring Page PV Array Connecting the AC Wiring Page Connecting the AC Wiring 975-0131-01-01 39 Figure 3-5 AC Connections from GT Inverter to Utility Service Panel Utility Grid Xantrex GT Inverter Wiring Box Connecting Inverters in Parallel DC and AC Wiring for Inverters in Parallel Page Communications Wiring for Inverters in Parallel Xanbus Network Technology CAUTION: Equipment damage Page Cabling Requirements RJ45 Connector Requirements CAUTION: Equipment damage Purchasing Network Components Guidelines for Routing the Network Cables CAUTION: Unpredictable device behavior Connect the Communications Cable between Inverters in Parallel Figure 3-11 Communications Wiring for GT Inverters in Paral lel Page Page Startup Procedure Checking the PV Array DC Voltage Checking the AC Utility Voltage Replacing the Wiring Box Cover Starting up the GT Inverter Page Monitoring the Front Panel Display Front Panel Display Screens and What They Mean Startup Mode Normal Operation Mode Page Offline Mode Fault Mode Fault Message Screens Special Screens Custom Screens Status Indicator Lights Page 6 Factors Affecting GT Inverter Performance PV Array Factors Other Factors Performing General Maintenance Replacing Parts WARNING: Shock and fire hazard Replacing the Ground Fault Protection Fuse WARNING: Shock and fire hazard Replacing the Inverter Page Page Identifying Error/Fault Conditions and So lu tions Page Electrical Specifications Input Output Adjustable Disconnect Settings Output Power Versus Ambient Temperature Efficiency Figure A-2 Typical Efficiency Environmental Specifications User Display Mechanical Specifications Display Accuracy Page Warranty an d R etu rn Information Warranty What does this warranty cover? What will Xantrex do? How do you get service? Disclaimer Product Exclusions Warning: Limitations On Use Return Material Authorization Policy Return Procedure If you are returning a product from outside of the USA or Canada If you are returning a product to a Xantrex Authorized Service Center (ASC) Out of Warranty Service Information About Your System Index