Related Manuals for Sungrow SG2K5TL
Summary of Contents for Sungrow SG2K5TL
- Page 1 SG2K5TL/SG3KTL/SG4KTL-31 PV Grid-Connected Inverter User Manual SG2K5_3K_4KTL-V31-UEN-Ver12-201206 Version: 1.2...
- Page 3 About This Manual This manual is for the inverter SG2K5TL-31, SG3KTL-31 and SG4KTL-31. These inverters are grid-connected, transformer-less, robust and of high conversion efficiency. The device will bring you more profits from PV power system. The manual contains information about the inverter, which will provide you guidelines to connect the inverter into the PV power system and operate the inverter.
- Page 4 Symbols Explanation Important instructions contained in this manual should be followed during installation, operation and maintenance of the inverter. And they will be highlighted by these symbols. DANGER indicates a hazard with a high level of risk which, if not avoided, will result in death or serious injury.
- Page 5 Symbols on the Inverter Body This symbol indicates that you should wait at least 10 minutes after disconnecting the inverter from the utility grid and from the PV input before touching any inner live parts. Hot surface! In order to reduce the risk of burns, do not touch device hot surface when the device is running.
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Page 7: Table Of Contents
Contents About This Manual ....................I 1 Safety Instructions ....................1 IMPORTANT SAFETY INSTRUCTIONS ....................1 SAVE THESE INSTRUCTIONS ......................1 2 Product Introduction ....................7 2.1 Intended Usage ..........................7 2.2 Product Description .......................... 8 2.2.1 Product Appearance ......................... 8 2.2.2 Dimensions and Weight of Inverter .................. - Page 8 6.4 Connecting Inverter to PV Arrays ....................31 6.4.1 Assembling DC Cable to Connector ..................32 6.4.2 Wiring Procedures ........................34 6.5 PV System Grounding ........................35 6.6 Communication Connection......................36 6.6.1 Communication Types ......................36 6.6.2 RS485 Communication Connection ..................36 7 Commissioning .....................
- Page 9 10.16.1 Address Settings ......................... 62 10.16.2 Protocol Settings ......................... 62 10.17 Inverter Start and Stop ........................ 63 APPENDIX ........................64 Electrical Specifications ........................64 Temperature Derating Curve ....................... 66 Exclusion of Liability ..........................67 About Us ............................... 68 Contact Information ..........................68...
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Page 11: Safety Instructions
Safety Instructions IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS Inverter SG2K5TL-31, SG3KTL-31 and SG4KTL-31 have been designed and tested strictly according to the international safety regulations. However, for electrical and electronic equipment, safety instructions related to electrical device must be complied with during installation, commissioning, operation and maintenance. - Page 12 SG2K5TL/SG3KTL/SG4KTL-31 User Manual Install the inverter onto the wall Connect inverter into the PV power system Connect other devices into the PV power system Commission the inverter Maintain and service the inverter Before Installation There is a risk of injury due to improperly handling the device! Always follow the instructions contained in the manual when moving and positioning the inverter.
- Page 13 Safety Instructions All cables must be firmly attached, undamaged, properly insulated and adequately dimensioned. During Inverter Operation There is a risk of inverter’s damage or personal injury! Do not disconnect DC connectors while the inverter is under AC load! First de-energize the equipment from dual power sources and verify that there is no voltage present.
- Page 14 SG2K5TL/SG3KTL/SG4KTL-31 User Manual There is a risk of inverter damage or personnel injury due to incorrect service work! Always keep in mind that inverter is power supplied by dual power source: PV arrays and utility grid. Before any service work, you should obey the following procedures.
- Page 15 Safety Instructions Others The selected country settings can be changed by qualified personnel only! Alternation of the country settings may cause a breach of the type-certificate marking. All safety instructions, warning labels and nameplate on the inverter body: Must be clearly visible; Must not be removed, covered and pasted.
- Page 16 SG2K5TL/SG3KTL/SG4KTL-31 User Manual...
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Page 17: Product Introduction
Product Introduction Intended Usage SG2K5TL-31, SG3KTL-31 and SG4KTL-31(They will be referred to as inverter hereinafter unless otherwise specified), single-phase without transformer string inverters, are crucial units between the PV arrays and utility grid in the small-scaled PV power system. Inverter is dedicated to converting direct current power generated by the PV modules into alternating current, which conforms to parameters of local utility grid, and feeds the alternating current into the utility grid. -
Page 18: Product Description
Remark PV strings monocrystalline silicon; polycrystalline silicon and thin-film without grounding of protection class II Inverter SG2K5TL-31, SG3KTL-31 or SG4KTL-31 involved Metering device meter cupboard with power distribution system Utility grid TT, TN Any other or additional usage is not permitted except the intended usage. -
Page 19: Dimensions And Weight Of Inverter
Fig 2-3 Dimensions of Inverter Table 2-1 Dimensions Value Type W(mm) H(mm) D(mm) Net weight(kg) SG2K5TL-31 SG3KTL-31 SG4KTL-31 2.2.3 LCD Display Panel As a friendly human-computer interaction interface, LCD display panel comprises LED indicators, buttons and LCD display screen on inverter front panel. -
Page 20: Dc Switch
SG2K5TL/SG3KTL/SG4KTL-31 User Manual Malfunction records shown on the LCD display Inverter configuration by pressing the buttons Fig 2-4 LCD Display Panel Name Description “RUN” and “FAULT”. Inverter working status can be known from the two indicators indicators. Detailed definition is shown in Table 2-2. -
Page 21: Technical Description
Product Introduction Before restarting the inverter, rotate the DC switch to the “ON” position. Technical Description 2.3.1 Principle Description The principle design of transformer-less and grid-connected inverter can be known from the block diagram Fig 2-5. Three PV strings input voltage is transmitted to DC BUS via Boost circuit. - Page 22 SG2K5TL/SG3KTL/SG4KTL-31 User Manual Data storage and display Inverter stores essential data including running information and fault records, and displays them on integrated LCD display. Parameters configuration Inverter provides various parameters configuration for optimal operation. Communication interface Standard RS485 interface for connecting other monitoring devices into the PV system is included.
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Page 23: Workflow About Inverter
Workflow about Inverter The following diagram shows the installation flow of inverter for installer. Please follow these procedures. Start Unpacking and Inspection Read User Manual Install Immediately？ Storage Mounting Location Selection Moving Inverter Mounting the Inverter Electrical Connection Check before Commissioning Commissioning Troubleshooting Success? Fig 3-1 Installation Flow Chart... - Page 24 SG2K5TL/SG3KTL/SG4KTL-31 User Manual Table 3-1 Description of Installation Flow Order Description Remark Unpacking and inspection Section 4.1 Read this manual, especially the section on “safety instruction” Chapter 1 Store the inverter unit if not installed immediately Section 4.4 Choose the best installation site Section 5.1...
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Page 25: Unpacking And Storage
Unpacking and Storage Unpacking and Inspection The unit is thoroughly tested and inspected strictly before delivery. Although sturdy packaging is used, damage may still occur during shipping. Check the packing for any visible damage upon receiving. Check the inner contents for damage after unpacking. Check the completeness of delivery contents according to the supplied packing list. -
Page 26: Identifying Inverter
Fig 4-2 Nameplate of Inverter SG4KTL-31(without serial number) *Image shown here is indicative only. Actual product you receive may differ. Item Description SUNGROW logo and product type Technical data of inverter Marks of certification institutions of inverter Company name, website and origin... -
Page 27: Delivery Contents
Unpacking and Storage Delivery Contents Fig 4-3 Delivery Contents Item Description Inverter unit Backplate is used for mounting inverter onto the wall Expansion bolts for fastening backplate onto concrete wall Fastener set for installing inverter onto metal frame PV input connectors, including positive and negative connectors AC output connector Waterproof Ethernet male-connector User Manual, including installation instructions and operation instructions... -
Page 28: Storage Of Inverter
If there is more than one inverter to be stored, the maximum layers for original carton is three. After long term storage, local installer or service dept. of Sungrow should perform a comprehensive test before connecting the inverter into PV power system. -
Page 29: Installing Inverter Onto Wall
Installing Inverter onto Wall Installation shall comply with local regulations and technical rules. Installation shall comply with the relevant instructions of AS 4777.1. Selecting Installation Location Selecting an optimal installation location for the inverter is decisive for its operating safety as well as it expected efficiency and service life. 1. - Page 30 SG2K5TL/SG3KTL/SG4KTL-31 User Manual 4. Do not install the unit on wall of flammable materials. Flammable wall material 5. Install the unit at eye level for easily buttons operation and display read. 6. It is suggested that the inverter be installed vertically with upside up for good heat dissipation.
- Page 31 Installing Inverter onto Wall 9. The ambient temperature should range from Max. ambient temperature: -25°C to 60°C. When ambient temperature +60°C exceeds 45°C, the power output will reduce. Min. ambient temperature: 10. The relative humidity of chosen installation site -25°C should never exceed 95%.
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Page 32: Moving Inverter To Installation Site
SG2K5TL/SG3KTL/SG4KTL-31 User Manual 13. Do not install the inverter in a closed cabinet. Otherwise, the inverter will not operate normally. Closed Cabinet 14. Do not install inverter where children can reach. 15. Do not install inverter in living area. Noise can be produced during running of inverter, which may affect your daily life. -
Page 33: Installation Procedure
Installing Inverter onto Wall Installation Procedure Inverter is installed onto the wall by means of backplate in the packaging. If you don’t use the supplied backplate, you can drill holes refer to its dimension below. Fig 5-1 Dimensions of Backplate and Fastener(unit: mm) In the following pages, we will introduce how to install the inverter onto the wall using the provided backplate. - Page 34 SG2K5TL/SG3KTL/SG4KTL-31 User Manual In order to avoid electrical shock or other injury, inspect existing electronic or plumbing installations before drilling holes. 5. Attach the backplate to the wall with the supplied expansion bolt set. The torque for fastening the nut should be at least 35 Nm.
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Page 35: Electrical Connection
Terminals Description All electrical terminals are located at the bottom of unit, as the following diagram shown. Sungrow provides corresponding plug connectors in the scope of delivery, as a result of convenient and safe connection without opening the lid. Fig 6-1 Terminals Description... -
Page 36: Simplified Electrical Connection Diagram
Utility grid Rated grid voltage is 230V. SolarInfo logger or User may order it from Sungrow. converter device User equips this device to monitor inverter. PV arrays There are three pairs of input terminals for inverter. The allowable... -
Page 37: Connecting Inverter To Ac Grid
An independent two-pole circuit breaker for each inverter must be installed at the output side to ensure that the inverter can be securely disconnected under load. Inverter Type Specification Recommended of AC Circuit Breaker SG2K5TL-31 SG3KTL-31 SG4KTL-31 There are some points that are not allowed for the inverter: It is not allowed for several inverters to use the same circuit breaker. - Page 38 SG2K5TL/SG3KTL/SG4KTL-31 User Manual Scenario 1: Several inverters are operated in parallel connection to the single-phase Low Voltage grid. Requirements: The sum of all inverters in parallel connection is limited to THIRTY. Scenario 2: Several inverters are operated in parallel connection to the three-phase Low Voltage grid.
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Page 39: Assembling Ac Connector With Cables
Select AC cable specifications and type considering the following facts: 1. The grid impedance of the AC cable must correspond to the specification to avoid unintended disconnection from the grid or derating of the output power. SG2K5TL-31 SG3KTL-31 SG4KTL-31 Grid voltage without load[V] 2. - Page 40 SG2K5TL/SG3KTL/SG4KTL-31 User Manual Assembling Procedures 1. Strip off insulation layer of AC cables. The length of strip insulation is about 10mm. 10mm 2. Insert AC cables through cable gland and threaded sleeve. 3. Fix all cables ends to the corresponding terminals with the torque of 1Nm according to markings on the connector, especially “PE”...
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Page 41: Connecting Inverter To Ac Grid
Electrical Connection 6.3.3 Connecting Inverter to AC Grid Make sure that none of the DC and AC cables to the inverter is live before you start the electrical work. Connect the inverter exclusively to TN or TT mains as the following procedures: 1. -
Page 42: Assembling Dc Cable To Connector
SG2K5TL/SG3KTL/SG4KTL-31 User Manual PV arrays produce electrical energy when exposed to light and thus can create an electrical shock hazard. Wiring of the PV arrays should only be performed by qualified personnel. Prior to connecting PV array to inverter, the following specifications of PV arrays... - Page 43 Electrical Connection Assembling Procedures 1: Strip off 7mm insulation layer from all DC cables. 2. Crimp cable ends into corresponding circular contacts with crimping pliers. Positive Circular Contact Negative Circular Contact 3. Lead cable through cable gland. 4. Insert the crimped-on circular contact into insulator until it snaps into place. And pull gently to check that it is correctly engaged.
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Page 44: Wiring Procedures
SG2K5TL/SG3KTL/SG4KTL-31 User Manual 6.4.2 Wiring Procedures Make sure that all the DC and AC cables to the inverter are no live before you start the electrical work. Connect the inverter to PV array as the following procedures: 1. Manually rotate the DC switch at the bottom to the “OFF” position. -
Page 45: Pv System Grounding
Electrical Connection PV System Grounding Because of the transformer-less design of the inverter, neither the DC positive pole nor DC negative pole of the PV strings can be grounded. All non-current carrying exposed metal parts of the equipment and other enclosures in the PV power system should be grounded (e.g., PV arrays frame and inverter enclosure). -
Page 46: Communication Connection
SG2K5TL/SG3KTL/SG4KTL-31 User Manual Communication Connection 6.6.1 Communication Types Inverter may transfer the monitored information from inverter via its integrated RS485 interface to a PC with monitoring software (such as SolarInfo Insight), or to data logging device (such as SolarInfo Logger). - Page 47 Electrical Connection 3. Pull cables outwards to confirm whether they are fastened firmly. 4. Insert the RJ45 plug into the front plug connector until it makes a clicking sound. 5. Tighten the cable gland with appropriate torque. Front connector Cable gland 6.
- Page 48 SG2K5TL/SG3KTL/SG4KTL-31 User Manual Fig 6-5 Multiple Inverters Communication with Other Devices 7. Verify the communication connection and configure communication parameters. If there is more than one inverter to communicate with a PC or a data logger, it is crucial to configure communication parameters of each inverter. See “10.16 Communication Parameters Settings”.
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Page 49: Commissioning
Commissioning Verify before Commissioning Before starting up the inverter, you should check the following items for requirements. 1. Inverter unit is accessible for operation, maintenance and service. 2. Re-check that the inverter is firmly installed on to the wall. 3. Room for ventilation well is provided for one inverter or more than one inverter. 4. - Page 50 SG2K5TL/SG3KTL/SG4KTL-31 User Manual DC bus starts to charge and check the state of utility grid; − If the conditions are OK, inverter feeds AC power to grid and enters into the − running state. 4. Observe state of LED indicators and LCD screen.
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Page 51: Disconnection Of Inverter
Disconnection of Inverter For maintenance work or any service work, inverter must be switched off. In normal operation, switching off is not necessary. In order to disconnect the inverter from the AC and DC power sources, you should proceed with the following procedures. Otherwise you will be exposed to lethal voltages or the inverter will be damaged. - Page 52 SG2K5TL/SG3KTL/SG4KTL-31 User Manual Press the ribbing Pull outwards Disconnect DC connectors...
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Page 53: Troubleshooting
3. Wait for DC voltage to return to the operating voltage. 4. If the phenomenon still exists, contact Sungrow service dept.. “RUN” indicator DC voltage supplied is not 1. Wait for DC voltage to return to the and LCD turn on stable. -
Page 54: Troubleshooting Of Faults In Lcd Screen
PV string if the voltage measured is not permissible. 3. Reconnect the DC cables to the inverter and start up the inverter. 4. If the fault still exists, contact Sungrow service dept.. Vac-low The grid voltage falls below the 1. - Page 55 3. Check that there is abnormal noise of fans. Otherwise please replace broken fan (only for SG4KTL-31). 4. There may be something covering heat sink. 5. If the fault still exists, contact Sungrow service dept.. DC inject Contact Sungrow service dept. for solution. DC components of inverter...
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Page 56: Maintenance
SG2K5TL/SG3KTL/SG4KTL-31 User Manual Email: service@sungrow.cn We need the following information to provide you the best assistance: Type of the inverter Serial number of the inverter Fault code Brief description of the fault phenomenon Maintenance Once the inverter is well operated, normally inverter needs no maintenance or calibration. - Page 57 Troubleshooting Step 4: Check that there is no voltage existing inside with appropriate test device. Step 5: Replace the button battery. The following requests should be obeyed during the battery maintenance. Servicing of batteries should be performed or supervised by personnel knowledgeable about batteries and the required precautions.
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Page 58: Operation Of Lcd Menu
Operation of LCD Menu 10.1 Description of Button Function Inverter offers two buttons for the user to look up running information and configure parameters. The two buttons have multiple functions. Users should know the button functions and how to operate before any operation onto inverter. Table 10-1 Description of Button Function Name Operation... -
Page 59: Operation Mode Of Inverter
Operation of LCD Menu 10.2 Operation Mode of Inverter Stop The inverter is shut down. Stand-by Stand-by mode is entered for insufficient input power. During stand-by mode the inverter will wait until the DC voltage recovers to 150V in standby time (set by user, see “10.14 Running Parameters Settings”). -
Page 60: Overview Of Complete Lcd Menu
SG2K5TL/SG3KTL/SG4KTL-31 User Manual 10.3 Overview of Complete LCD Menu ▼ ▼ ▼ ▼ ▼ ▼ ▼ Fig 10-1 Menu Tree... -
Page 61: The Default Screen
Operation of LCD Menu 10.4 The Default Screen The LCD is initialized upon energized of inverter and then enters into the default menu. Current date and time are also displayed. P-ac: the current output power of inverter. E-day: generated energy in the current day. E-tot: the overall accumulative generated energy. -
Page 62: Current Running Information
SG2K5TL/SG3KTL/SG4KTL-31 User Manual 10.6 Current Running Information 1. Press ENTER to enter general control screen from the default screen. 2. Press ▼ to view current running information. And press ▼ to go to the next page. V-dc: PV arrays input voltage;... -
Page 63: Fault Record
Operation of LCD Menu 10.7.2 Fault Record Inverter stores up to 20 fault records, which include type and the occurrence time. User can look up the historical fault records following the procedures below. 1. Press ENTER to enter general control screen from the default screen. 2. -
Page 64: Language Settings
SG2K5TL/SG3KTL/SG4KTL-31 User Manual 10.8 Language Settings Inverter supports four different languages: English, Deutsch, Française and Italia. Language can be configured as the following indications. 1. Press ENTER to enter general control screen from the default screen. 2. Press ▼ to navigate arrow-pointer to “Set-param” and then press ENTER. -
Page 65: Deviation Of E-Tot Adjustment
Operation of LCD Menu 10.10 Deviation of E-tot Adjustment Where there is deviation between E-tot in the inverter LCD screen and energy recorded in the energy metering device, you should perform energy-adj settings as the following indications. 1. Press ENTER to enter general control screen from the default screen. 2. -
Page 66: Load Default Settings
SG2K5TL/SG3KTL/SG4KTL-31 User Manual 10.11 Load Default Settings If “Load default” is performed, all running information and historical records will unrecoverable cleared off. And all parameters not including protective parameters and time will return to the default values. 1. Press ENTER to enter general control screen from the default screen. -
Page 67: Auto-Test (Only For Italy)
Operation of LCD Menu 10.13 Auto-test (Only for Italy) Inverter provides for Italian auto-test operation to verify the validity of functions about over-voltage protection, under-voltage protection, over-frequency protection and under-frequency protection. After confirming “Auto test [Italy]” command, the inverter will perform protection functions test automatically in turn. -
Page 68: Running Parameters Settings
SG2K5TL/SG3KTL/SG4KTL-31 User Manual 10.14 Running Parameters Settings 1. Press ENTER to enter general control screen from the default screen. 2. Press ▼ to navigate arrow-pointer to “Set-param” and then press ENTER. 3. Press ► to move cursor to the right and press button ▼ to set password 1111. -
Page 69: Protective Parameters Settings
4. Press ENTER to confirm command. 5. Press ▼ to navigate arrow-pointer to “Pro-param” and then press ENTER. 6. Input the password that be acquired from Sungrow. 7. Choose the corresponding country code of the inverter installation country. If the inverter installation site is not included in the following list, installer should choose item “Other”... - Page 70 SG2K5TL/SG3KTL/SG4KTL-31 User Manual Single-stage Protective Parameter If the selected protective parameter type is “Single-stage”, the sub-menu will come up. Press to move cursor right and Press to set the appropriate value. Confirm by Press ENTER. If the country code is GB(Great Britain) and protective parameters mode is “Single-stage”, the output current will be limited to below 16A.
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Page 71: Communication Parameters Settings
Operation of LCD Menu Parameter Explanation Ⅰ-Min -V. time Stage Ⅰ Grid under -voltage tripping time Stage Ⅱ Grid under -voltage Ⅱ-Min -V. grid Ⅱ-Min -V. time Stage Ⅱ Grid under -voltage tripping time Maximum protection frequency Max-F. prote Ⅰ-Max-F. grid Stage Ⅰ... -
Page 72: Address Settings
SG2K5TL/SG3KTL/SG4KTL-31 User Manual If there are several inverters to communicate with a PC or a data logger, address of every inverter should be different with each other and the default baud rate 9600 of every inverter is identical. 10.16.1 Address Settings 1. -
Page 73: Inverter Start And Stop
Operation of LCD Menu 5. Press ▼ to navigate arrow-pointer to “Protocol” and press ENTER. 6. Press button▼ to set appropriate communication protocol. Press ENTER to confirm. 10.17 Inverter Start and Stop Starting the Inverter 1. Press ENTER to enter general control screen. 2. -
Page 74: Appendix
APPENDIX Electrical Specifications Technical Specifications SG2K5TL-31 SG3KTL-31 SG4KTL-31 DC SIDE DATA Max. Input Power 2800W 3300W 4400W Max. Input Current Isc PV MPP Voltage Range 180~450V 180~450V 210~450V Max. Input Voltage 500V Min. Input Voltage 150V Start Voltage 170V Number of MPP Trackers/Strings Per MPP... - Page 75 System Max. Efficiency 97.3% Euro. Efficiency 96.2% 96.3% Enclosure Fans: IP54; IP65 Other: IP65 Power Consumption at Night Ambient Temperature -25℃~+60℃ Safety Class PV Side Overvoltage Category AC Side Overvoltage Category Wet Location Pollution Degree Cooling Method natural cooling controlled forced-air cooling Relative Humidity...
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Page 76: Temperature Derating Curve
Temperature Derating Curve Pnom[P.U.] Ambient temperature [°C]... -
Page 77: Exclusion Of Liability
In case of unforeseen calamity or force majeure The use of supplied software produced by Sungrow Power Supply Co., Ltd. is subject to the following conditions: Sungrow Power Supply Co., Ltd. rejects any liability for direct or indirect damages arising from the use of the SolarInfo software. -
Page 78: About Us
The power rating of Sungrow products covers from several hundred watt to large mega-watt systems. The pursuit of Sungrow is to help our customers acquire stable and clean power with minimum cost, maximum reliability and enhanced safety. - Page 80 Sungrow Power Supply Co., Ltd. Add: No.2 Tianhu Rd., New & High Technology Industrial E-mail: info@sungrow.cn Development Zone, Hefei, P.R.China.230088 Tel: +86 551 532 7834/532 7845 Web: www.sungrowpower.com Fax: +86 551 532 7856 Specifications subject to change without notice.