i-energy i-micro inverter GT260 This installation guide contains important instructions on safety matters and the installation of the i-energy i-micro inverter GT260. Please read this guide carefully and follow all instructions to ensure safe installation and operation. Read all warnings, instructions and maintenance on the GT260 Installation procedures listed in this manual. Before your read: This symbol indicates warning, risk of electric shock Presents safety information to prevent injury or hazards to users and/or installers. 251660288 Note This symbol indicates important information for system operation, please read the content carefully where this symbol is shown.. Symbols to Be Used in Equipment Marking Item Symbol Reference Description 1 ISO 3864 5036 Caution, risk of electric shock 2 IEC 60417 5041 (2002-10) Caution, hot surface 3 Caution, unable to take apart Contact information: i-energy Corporation Ltd. 7F.-, No.128, Sec. 3, Minsheng E. Rd., Taipei City 105, Taiwan (R.O.C.) Web:i-Energy.com.tw TEL: 886-2-2545-8097 FAX: 886-2-2546-6532
Table of Content Subject... 1 General Introduction for the i-energy GT260 i-micro inverter system... 4 Specifications sheet & parameters... 4 GT250 Installation procedures... 6 Things to check before installing GT260... 6 Step 1- Affix the i-micro inverters serial number to the i-energy System Mapping Guide found in i-manager box... 7 Step 2- Attach i-energy i-micro inverters to the rack... 7 Step 3- Connecting to the ground system... 8 Step 4- Connecting the i-micro inverters AC cable to the PV module system... 10 Step 5- Connecting the DC Cables to the PV modules... 10 Step 6- Using the AC grid extension cable to connect i-mcri inverter to the AC breaker... 10 For general connection configuration... 11 For German market, AC grid connection configuration with branch braker or safety box... 12 Step 7- Tune on the AC breaker after all the installation steps have been completed... 16 i-micro inverter replacement... 16 Step 1- Disconnect DC cables... 16 Step 2- Disconnect AC cable... 16 Step 3- Loose lay-in lug on i-micro inverter... 17 Step 4- Loosen the mounting screws to take the i-micro inverter from its rack... 17 Accessory & LED Identification through installation steps... 17 APPENDIX... 19
General Introduction for the i-energy GT260 i-micro inverter System i-energy GT260 is designed with high transform efficiency, DC(PV panel) to AC(Grid) i-micro inverter. Each i-micro inverter is individually paired with a PV panel, which ensures each PV panel has its own MPPT, and can individually export AC power to grid utility. A recommended PV module should have 240W to 265W power output, to ensure that GT260 i-micro inverter can work with the best MPPT efficiency. GT260 i-micro inverter is a certificated, fully outdoor design with IP 65 protection level, it is recommended to mount the inverter near your PV panel with its rack. Aside from this manual, see www.i-energyinc.com/downloads for further support. The complete i-energy i-micro inverter system should be with i-manager, a web based PLC communication data login to monitor your i-micro inverter system. Specifications for GT260: PV Input (DC) General Efficiency Input power 240W to 265W Maximum efficiency 94 % Peak power tracking range@230w 30-50V CEC efficiency 93 % MPPT operating range 25-50V Nominal MPP Solar panel input voltage range Maximum DC short circuit current Maximum input current 25V~59V 12A 10A tracking 99.3 % Grid output (AC) Mechanical Data Maximum output power 230W Dimensions (L x W x H) 23.2cm x 21.1cm x 4.26cm Nominal output current 1 A Cooling Natural convection Nominal voltage (USA) 240V Enclosure Nominal voltage (EU) 230V environmental rating Outdoor, IP66, Type 3R
Nominal frequency (USA) 60Hz Connector Depended on the Nominal frequency (EU) 50Hz connector from Power factor > 0.95 Junction box. Maximum units per branch 17 Weight 2.2 kg ( 4.8lbs) Key parameters for GT260 Overvoltage Category II (for PV input), III (for AC output) Pollution Degree 3 Operation Temperature -40ºC - +65ºC Storage Temperature -40ºC - +85ºC Relative Humidity 4% - 100% Maximum Altitude 2000m Feedback current 0.5mA Maximum short-circuit current 12A To reduce the risk of fire, connect only to a circuit whether complied with maximum branch-circuit overcurrent protection in accordance with the National Electrical Code, ANSIINFPA 70. Please read the specification for power input/output limit before installation. No beyond or out of limitation is allowed. i-micro inverter Installation Manual This specification defines the GT260 for 240W to 265W solar panels. The i-micro inverter is designed to be plugged between the solar panel and the power grid, and converts DC power into AC power. The i-micro inverter is used to quickly and easily connect the PV module to transfer source energy from the DC to AC circuit, then connect to the electrical utility grid or to energize the AC circuit. Installation Procedures Things to check before installing GT260: Please have your technician or installers to review the following items listed below before beginning the installation.
Item Check items 1 Read through the i-micro inverter input/output specifications and warning items. 2 Type of roof material qualified to install PV systems 3 Broadband connection is established/connected 4 Available Ethernet socket 5 Sufficient grid utility point Anyone who installs or replaces the i-micro inverter must be an authorized and licensed personnel, who can ensure the safety practice of a qualified assembly, installation or replacement. Do not disassemble the inverter s casing to prevent risks of electric shock and fire. Select a suitable PV panel with a short circuit current less than 12 Amp. For i-micro inverter installation to the rack and PV module, follow thekey steps below: Step 1- affix the i-micro inverters serial number to the i-energy System Mapping Guide found in the i-manager box. Step 2- Attach the i-micro inverter to the rack before connecting it to the PV module. Step 3- Connect the AC cables to each branch of the PV module system. Step 4- Connect the grounding system. Step 5- Connect the DC cables to each PV module. Step 6- Use the cable accessory to connect between the AC cables of i-micro inverter and the AC source. Step 7- When all of the installation steps have been completed, it is now safe to turn on the AC source to begin operation. Step1-- Affix the i-micro inverters Serial Number to the i-energy System Mapping Guide Found in the i-manager Box. Take i-micro inverter out of its box, and turn it over to find its serial number. a. Remove serial number sticker located directly below GT260 i-micro inverter label. b. Affix serial Number sticker to the i-energy System Mapping Guide
Fig. 1.1 Turn over i-micro inverter to see serial number Fig. 1.2 System Mapping Guide Please go to www.i-energyinc.com to download the i-energy System Mapping Guide if you don t have an i-manager, or if an additional i-energy System Mapping Guide is needed. Step 2 --Attach i-energy i-micro inverters to the Rack a. Take i-micro inverter out of the box, mount i-micro inverter onto the rack. Install mounting hardware. b. Use a M8 or M10mm size screw to fix the inverter. c. The gap distance between the roof surface and the back of the PV modules needs to be at least 1cm. Fig. 2.1 Mounting GT260 on racking.
1cm Fig. 2.2 The necessary gap for the i-micro inverter s back side. Recommended racking specifications can be found at www.i-energyinc.com, by downloading the System racking guide. Step 3- Connecting to the Grounding System. a. Use a recommended grounding lug with a continuous ground wire, see Fig. 3.1. b. Grounding washers ( i.e. Wiley Electronics WEEB ). Suggested torque requirement is 18.5 N-m Minimum. Fig. 3.1 Grounding lay-in lug.
Fig. 3.2 Grounding washer. Note Grounding Regulations may vary by market, be sure to follow local grounding requirements. - Mounting Hardware - Mounting Washer - Grounding Hardware - Grounding Wire - DC Connection Cable - AC Connection Cable - Racking Note Inverters must be grounding according to related local standard. Note The lay-in lug from ILSCO (P/N: GBL-4DBT) or other certified products of equivalent or better quality can also be used. Step 4- Connecting the i-micro inverters AC Cable to the PV Module System. a. Connect adjacent i-micro inverters to each other through AC interconnection cables. b. Listen for a click as connectors engage. Make sure any unused i-micro inverter AC connector is covered with a sealing end cap. Do not exceed 17 pcs of i-micro inverters connected per branch.
Key Connecting Procedure for the AC grid cable Connecting Procedure Fig. 4.1 AC cable connection. Fig. 4.2 Connect the Male & Female AC connectors between each inverter, and the end cap on the last inverter at the end of the string. Step 5- Connecting the DC Cables of PV Modules a. Connect each PV module to the inverter DC cables to feed PV power into i-micro inverter, following the polarity direction marked on each i-micro inverter.
Fig. 5.1 Connect the DC connector to the i-micro inverter Note Follow all the cable connection sequences outlined in this guide. Step 6- Using the AC Grid Extension Cable to Connect the i-micro inverter to the AC Breaker. For General connection configuration: For US, Canada and Mexico: a. Use the AC grid extension cable to connect the i-micro inverter with the AC breaker inside AC junction box, see Fig 6.1. To connect i-micro inverter with AC breaker, the length of the cable will be 5metres. The color definition of each terminal is shown below in Table 6.1 Fig. 6.1 General configuration of i-micro inverter to grid utility.
Table 6.1 Color definition Pin Number FUNCTION (US) WIRE COLOR PIN 1 LINE 1 Black PIN 2 LINE 2 White PIN 3 NEUTRAL Green Follow the local electrical codes and Nation electrical codes for electrical installation. For German market, AC grid connection configuration with branch breaker or Safety Box. b. To connect i-micro inverter with AC breaker (Fig 5.2), the length of the cable will be 5 meters. The color definition of each terminal is shown below in Table 5.1 Connect the i-micro inverter to the output terminal of branch breaker or i-energy s Safety Box, by using the cable accessory, as shown in Fig 5.3(a),Fig 5.3(b) or Fig 5.4. c. For i-micro inverter AC cables to connect AC breaker (Fig 5.4), the length of the cable will be 5 meters. The pin definition of each terminal is shown in Table 5.1 d. The branch breaker must include protection devices. See Fig 5.3(a),Fig 5.3(b) e. The function setting of protection devices is defined as shown in Table 5.2. and the circuit of branch breaker is shown in Fig. 5.3,Fig. 5.4(a) and Fig. 5.4(b)
Fig. 6.2(a) connection configuration with branch breaker Fig. 6.2(b) The Diagram of Branch Breaker
Table 6.2 Protection Devices Symbol Name Specifications Settings NFB No Fuse Breaker 2P 30AF 20AT NC (AC Breaker) MC Magnetic Contactor AC240V NC 3kW/4HP/28A U/OVP Voltage Protection Klemsan VP35 184V UVP, 264V OVP, 0.1 sec U/OFP Frequency Protection Klemsan FP35 47.5Hz UFP, 50.2Hz OFP, 0.1 sec Table 6.3 Color definition Pin Number FUNCTION (EU) WIRE COLOR PIN 1 LINE Black PIN 2 NEUTRAL Blue PIN 3 GROUND Green / Yellow Follow the local electrical codes and Nation electrical codes for electrical installation. The device between Utility and PV inverter may consist of breaker, fuse and connectors. To comply with local safety standards and codes, the connection system should be designed and implemented by a qualified technician.
Fig. 6.3 Wiring Scheme for safety box Step7- Turn on the AC Breaker after all the Installation Steps Have Been Completed a. Finally check the steps 1 to 5 to ensure system installation is complete then turn on the AC breaker to start your i-micro inverter PV system. Check the electrical utility grid and make sure that the utility company possesses the relevant licenses before the PV system begins operation. This unit is designed to feed energy to the public power grid (utility) only. Do not connect this unit to an AC source or generator. i-micro inverter Replacement If an i-micro inverter in your system isn t working properly, please follow the steps below to replace the defective i-micro inverter. Step 1- Disconnect the DC Cables a. Disconnect the PV panel DC connectors, according to manufacturer s recommendation then pull off the DC connector from the inverter.
Note Crimp pliers may be used to help disconnect the DC connector. Step 2- Disconnect the AC Cables a. Using a small screw driver, slightly press the tenon (a grey connection hook) on the AC connector, then pull apart to disconnect the AC connector. Step 3- Loose Lay-in Lug on the i-micro inverter
Step 4- Loose the Mounting Screws to Take Off the i-micro inverter from Its Rack Accessory: Listed below are the supplied accessories for installation. Customers can contact i-energy distributors to purchase the parts. Item Name Description Length 1 Extension Cable Bridging a gap between i-micro inverters. 2 AC Grid Cable For AC breaker 5m, 10m 3 End Cap For dustproof None Monthly Maintenance First turn power off the whole system before performing any maintenance listed in the table below. 5m Item Item Description 1 Wall-mounting screw Check for loose screws. 2 AC terminal housing Check the cables are securely fastened onto the housing 3 All Cables Check for cracks on each cable 4 All cable gland Check for loose ends. 5 i-micro inverter Safe cleaning Note w It is necessary for technician to recommend periodic inspection and testing while performing wiring inspection at regular intervals.
LED Identification by Installation Steps: LED state i-micro inverter condition Step 1 OFF No power feed in to inverter. Step 2 OFF No power feed in to inverter. Step 3 OFF No power feed in to inverter. Step 4 OFF No power feed in to inverter. Step 5 BLINKING ORANG PV power feed in but the grid is turned off. Step 6 BLINKING ORANG PV power feed in but the grid is turned off. Step 7 BLINKING GREEN./ SOLID GREEN Wait for grid connection, then activate the inverter to power feed the grid. If the system is BLINKING RED LED at STEP 5, STEP 6, STEP 7 for over 10 seconds, please contact i-energy technical support for more information. Note For VDE V0126 grid connection requirements, safety box will indicate multi status. Please refer to LED indication table in the safety box installation manual. APPENDIX I -Wire assembly diagram General assembly in Europe : the wire assembly configuration for 17 i-micro inverters in 1 branch. APPENDIX II-Overall assembly diagram General assembly in Europe : overall system configuration with 72 i-micro inverters, which is 6 (six) branches for 1 system.
APPENDIX I
APPENDIX II