Sungrow SG2K5-S User Manual
Pv grid-connected inverter
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- Page 1 User Manual SG2K-S / SG2K5-S / SG3K-S / SG3K-D / SG5K-D / SG8K-D PV Grid-Connected Inverter SG2_2.5_3_5_8K-UEN-Ver11 Version：1.1...
- Page 3 Documents must be stored carefully and be available at all times. All rights to the content of this manual are owned by Sungrow Power Supply Co., Ltd. (hereinafter “SUNGROW”). No part of this document can be modified, distributed, reproduced or published in any form or by any means without prior written permission from SUNGROW.
- Page 4 Contents may be periodically updated or revised due to product development. The information in this manual is subject to change without notice. The latest manual can be acquired at www.sungrowpower.com. Symbols Safety instructions will be highlighted with the following symbols. Symbol Explanation Indicates a hazard with a high level of risk that, if not...
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Page 5: Table Of Contents
Contents About This Manual ..............I Safety ..................1 General Safety ................1 Inverter ..................2 Skills of Qualified Personnel ............3 Product Introduction ............4 Intended Use ................4 Inverter ..................5 Energy Meter (optional) ............. 7 Function Description ..............8 2.4.1 Basic Function ................ - Page 6 Grid Connection ............... 25 5.3.1 AC Side Requirements ............25 5.3.2 Assembling the AC Connector ..........26 5.3.3 Installing the AC Connector ............. 27 PV Connection ................. 28 5.4.1 PV Input Configuration ............28 5.4.2 Assembling the PV Connector ..........31 5.4.3 Installing the PV Connector .............
- Page 7 7.5.10 Setting Communication Parameter ........49 7.5.11 Ethernet Configuration............50 Starting/Stopping the Inverter ..........50 Viewing the Error Record ............50 Setting the Time ..............50 Setting the Country ..............51 7.10 Viewing Device Info ..............53 Troubleshooting and Maintenance ........54 Troubleshooting ...............
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Page 9: Safety
1 Safety The inverter has been designed and tested strictly according to international safety regulations. Read all safety instructions carefully prior to any work and observe them at all times when working on or with the inverter. Incorrect operation or work may cause: ... -
Page 10: Inverter
1 Safety User Manual 1.2 Inverter There is a warning label on the inverter body. Disconnect the inverter from all the external power sources before service! Do not touch live parts until 10 minutes after disconnection from the power sources. There is a danger from a hot surface that may exceed 60°C. -
Page 11: Skills Of Qualified Personnel
User Manual 1 Safety Risk of inverter damage or personal injury Do not pull out the PV connectors and AC connector when the inverter is running. Disconnect the AC circuit breaker and set the DC load-break switch of the inverter to OFF. Wait 10 minutes for the internal capacitors to discharge. -
Page 12: Product Introduction
The intended use example is shown in Fig. 2-1. PV power Output power Export power Load power Fig. 2-1 Application in a PV Power System Item Description Remarks Monocrystalline silicon, polycrystalline silicon PV strings and thin-film without grounding. SG2K-S, SG2K5-S, SG3K-S, SG3K-D, Inverter SG5K-D and SG8K-D. -
Page 13: Inverter
User Manual 2 Product Introduction Item Description Remarks Sungrow single-phase Measures the export power and communicates or three-phase meter with the inverter via an RS485 connection. (optional) Utility grid Grid earthing system types: TT, TN. Household load Devices that consume energy. - Page 14 2 Product Introduction User Manual Fig. 2-2 Inverter Appearance (SG5K-D for reference) Item Name Description Positive and negative DC input connectors. PV terminals One or two or three pairs, depending on inverter type. DC switch (optional) To disconnect the DC current safely. To connect the communication module, such as RS485 terminal Wi-Fi module.
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Page 15: Energy Meter (Optional)
Tab. 6-2. 2.3 Energy Meter (optional) The SUNGROW Energy Meter is installed next to the main switch to detect the electrical measured values at the grid-connected point. It communicates with the inverter via an RS485 connection. The dimensions are shown below. -
Page 16: Function Description
2 Product Introduction User Manual Front view Side view Fig. 2-5 single-phase Meter Dimensions (unit: mm) Back view Side view Fig. 2-6 Three-phase Meter Dimensions (unit: mm) The single-phase Energy Meter and the three-phase Energy Meter are alternative and delivered separately. The meter figures in this document have been created for the single-phase Energy Meter unless otherwise specified. -
Page 17: External Demand Response
PV system, such as Wi-Fi module. It is recommended to use the communication module from Sungrow. Using a device from other companies may lead to communication failure or other unexpected damage. Further information on the communication module can be found in the respective Quick Installation Guide. -
Page 18: Reactive Power Regulation
2 Product Introduction User Manual 2.4.3 Reactive Power Regulation The inverter is capable of operating in reactive power regulation modes for the purpose of providing support to the grid. These various operating modes can be enabled or disabled via the LCD menu. ... -
Page 19: Unpacking And Storage
Check the delivery contents for completeness according to the packaging list. Contact SUNGROW or the distributor in case of any damaged or missing components. It is the best choice to store the inverter in the original packaging. So, do not dispose of it. -
Page 20: Identifying The Inverter
Fig. 3-2 Nameplate of Inverter * The image shown here is for reference only. The actual product you receive may differ. Item Description Item Description SUNGROW logo and product Marks certification type institutions Barcode, company name and Technical data origin Tab. -
Page 21: Delivery Contents
User Manual 3 Unpacking and Storage Icon Description TÜV mark of conformity. CE mark of conformity. 3.3 Delivery Contents Standard Delivery Wall-mounting bracket Documents Inverter Wi-Fi module M4x80 screw set Communication connector AC connector set M4x10 grounding screw PV connector set Fig. -
Page 22: Storage Of Inverter
3 Unpacking and Storage User Manual Optional Accessory Single-phase meter Three-phase meter The single-phase Energy Meter and the three-phase Energy Meter are optional. The meter figures in this document have been created for the single-phase Energy Meter unless otherwise specified. ... -
Page 23: Mechanical Mounting
4 Mechanical Mounting 4.1 Safety during Mounting Make sure there is no electrical connection before installation. In order to avoid electric shock or other injury, be sure there is no electricity or plumbing installations before drilling holes. Risk of injury due to improper handling ... - Page 24 4 Mechanical Mounting User Manual Do not install the inverter in the living area or bedrooms. The noise during its operation may affect daily life. The location should be not accessible to children. The ambient temperature and relative humidity should meet the following requirements.
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Page 25: Tools
User Manual 4 Mechanical Mounting Forward tilt Backward tilt Horizontally Upside down Clearance requirement and multiple installation: 400 mm 400 mm For multi-row installation, the distance between two adjacent rows should be at least 400 mm. 4.3 Tools General tools (recommended) Packaging tape Marker Measuring tape... - Page 26 4 Mechanical Mounting User Manual Protective clothing Wrist strap Protective gloves Dust mask Earplugs Goggles Insulated shoes Vacuum cleaner Heat shrink tubing Installation tools (recommended) Heat gun Hammer drill Rubber mallet Drill bit: φ10 Electric screwdriver Phillips screwdriver Wire stripper Tool bit: M4 Specification: M4...
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Page 27: Installing The Inverter
User Manual 4 Mechanical Mounting Hydraulic plier Wire crimper Wrench terminal Crimping range: 2.5-6mm² Wire clipper RJ11 crimping tool Flat-blade screwdriver Torx screwdriver Socket wrench TX30 Open end: 10mm (for M6 bolts) 13mm (for M8 bolts) 16mm (for M10 bolts) 4.4 Installing the Inverter Inverter is installed on the wall by means of wall-mounting bracket and the expansion plug sets. - Page 28 4 Mechanical Mounting User Manual Align the wall mounting bracket horizontally on the wall with the arrow upwards. Mark position of the drill holes. Use at least one hole on the right- and left-hand side of the wall mounting bracket. Tip: When mounting on a post, use the upper and lower central holes of the wall mounting...
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Page 29: Installing The Energy Meter
Wi-Fi module as an example. Refer to the manual delivered with the module for details. 4.5 Installing the Energy Meter The SUNGROW Energy Meter should be installed between the grid and the load. It supports a 35 mm DIN-rail installation, as shown in the following figure. Single-phase Energy Meter Three-phase Energy Meter Fig. -
Page 30: Electrical Connection
5 Electrical Connection Prior to any electrical connections, keep in mind that the inverter has dual power supplies. It is mandatory for the technical personnel to wear personal protective equipments (PPE) during the electrical work. Danger to life due to a high voltage inside the inverter ... -
Page 31: Terminal Description
User Manual 5 Electrical Connection Fig. 5-1 Electrical Connection Diagram Item Name Remarks -S series: one pair of PV terminals. PV strings -D series: three pairs for SG8K-D and two pairs for other –D inverters. Wi-Fi module RS485 communication. Used as a protective device during electrical connection. -
Page 32: Grounding The Inverter
5 Electrical Connection User Manual * Image shown here is for reference only. The actual product you receive may differ. Tab. 5-1 Terminal Descriptions Item Terminal Description MC4 terminals for PV inputs. -S series: one pair of PV terminals. PV terminals -D series: three pairs for SG8K-D and two pairs for other –D inverters. -
Page 33: Grid Connection
An independent two-pole AC circuit breaker for the inverter must be installed at the output side for safe disconnection. The recommended specifications are as follows: Inverter Type Specification SG2K-S / SG2K5-S / SG3K-S / SG3K-D 25 A SG5K-D 32 A SG8K-D... -
Page 34: Assembling The Ac Connector
5 Electrical Connection User Manual Cross-section (mm²) Cable diameter (mm) Type Recommende Range Recommended Range SG2K-S / SG2K5-S / 4…6 10…14 SG3K-S / SG3K-D SG5K-D 4…6 10…14 SG8K-D 5.3.2 Assembling the AC Connector Lead the AC cable through the Remove the cable jacket by cable gland and the housing. -
Page 35: Installing The Ac Connector
User Manual 5 Electrical Connection 5.3.3 Installing the AC Connector Disconnect the AC circuit breaker and secure it against reconnection. Measure the voltage and frequency of the grid-connected point to ensure that they are within the specified range listed in “10.1 Technical Data”. Align the AC connector and the AC terminal and mate them together by hand. -
Page 36: Pv Connection
Short-circuit Type Power Limit Voltage Limit Current Limit SG2K-S 3000 W 600 V 12 A SG2K5-S 3200 W 600 V 12 A SG3K-S 4000 W 600 V 12 A -D Series For –D inverters except SG8K-D, there are two pairs of PV terminals, each with... - Page 37 User Manual 5 Electrical Connection The inverter SG8K-D has three pairs of PV terminals. The PV1 has an independent MPP tracker. The PV2 has two pairs of PV terminals, which are internal paralleled and with one MPP tracker. The PV1 and PV2 can be configured in independent mode or parallel mode. For SG8K-D, the PV strings to PV2 input should have the same PV module type, the same string length, identical tilt and identical orientation.
- Page 38 5 Electrical Connection User Manual Open-circuit Short-circuit Total PV Input Type Voltage Limit Current Limit Power Limit (PV1 / PV2) (PV1 / PV2) SG3K-D 4000 W 600 V/600 V 12 A/12 A SG5K-D 6500 W 600 V/600 V 12 A/12 A SG8K-D 10400 W 600 V / 600 V / 600 V...
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Page 39: Assembling The Pv Connector
User Manual 5 Electrical Connection To avoid the input power unbalance of the two inputs or input load-restriction, ensure the two PV input cables are of the same type. 5.4.2 Assembling the PV Connector All PV cables are equipped with the water-proof direct plug-in connectors which match the PV terminals at the bottom of the inverter. -
Page 40: Installing The Pv Connector
5 Electrical Connection User Manual The inverter will not function properly if any PV polarity is reversed. If the PV connectors are not assembled into place, it may cause an arc or overheat. The loss caused by this issue will void the warranty. 5.4.3 Installing the PV Connector Connect the inverter to PV strings according to the following procedure. -
Page 41: Rs485 Connection
For the pin definition and waterproof procedure, please contact SUNGROW. Failure to comply with the requirements of wiring or waterproofing will void the warranty. 5.6 Meter Connection The SUNGROW single-phase energy meter should be installed next to the main switch. Solar switch Main Meter... -
Page 42: On The Meter Side
5 Electrical Connection User Manual 5.6.1 On the Meter Side For Single-phase Energy Meter Take out the communication connector from inverter’s packaging, and the meter (with 1-phase sensor) and cables from the meter’s packaging. Communication connector Power supply cable Meter RS485 cable Unscrew the swivel nut from the cable gland and remove the waterproof plug from the left inlet. - Page 43 User Manual 5 Electrical Connection Make sure that the CT clamp of 1-phase sensor is installed in the right direction: the arrow on the sensor must point away from the grid towards the load. For Three-phase Energy Meter Take out the communication connector from inverter’s packaging, and the meter and RS485 cable from the meter’s packaging.
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Page 44: On The Inverter Side
5 Electrical Connection User Manual Strip the insulation from the power wires by 10 mm. Then connect the wires to the terminals on the Energy Meter, as shown below. (Cross-section: 10 mm to 25 mm Load side Grid side The line conductor L1 supplies power to the Energy Meter. At least the line conductor L1 and the neutral conductor must be connected to the Energy Meter. -
Page 45: Drm Connection To An External Device
User Manual 5 Electrical Connection Insert the RJ45 plug into the left (Meter) port until it makes a clicking sound. external demand response enabling device connected, secure waterproof lid to the inverter bottom with four screws and then fasten the cable gland. 5.7 DRM Connection to an External Device The cable for connecting to the DRED is not included in the delivery. - Page 46 5 Electrical Connection User Manual Unscrew the swivel nut from the cable gland and remove the waterproof plug from the right inlet. Lead the cable through the cable gland then the right inlet. Use the Ethernet crimper to crimp the cable and carefully push all 8 unstripped colored wires into the RJ45 plug according to TIA/EIA 568B standard, as shown below.
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Page 47: Commissioning
Commissioning Proper commissioning is essential for the system, to protect it against fires, injury and electric shock. 6.1 Inspection before Commissioning Check the following items before starting the inverter: All the installation sites are convenient for operation, maintenance and service. Check and confirm that the inverter is firmly installed. -
Page 48: Commissioning Procedure
6 Commissioning User Manual 6.3 Commissioning Procedure Make sure all the above mentioned items meet the requirements. Connect the external AC circuit breaker. Rotate the optional DC switch to “ON”. If there is sufficient sunlight, the inverter will enter the running state and start to feed AC power to the grid. -
Page 49: Lcd Operation
7 LCD Operation 7.1 Button Function The inverter offers two buttons with multiple functions. Please refer to the following table before any operation of the inverter. Tab. 7-1 Button function Button Operation Description Navigate up / down or change the setting values. ≤1.2 s Hereinafter referred to as “Touch ESC”. - Page 50 Whether the insolation is sufficient and the PV connection is correct. If no anomaly is found, disconnect and reconnect the DC switch and the main switch to restart. If it still does not work, contact SUNGROW.
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Page 51: Menu Structure
User Manual 7 LCD Operation Viewing the Active Error/Warning If the status on the main screen is “Error xxx”, Error Touch ENT to view the active error code. If the inverter is running with a warning, Touch ENT to view the active warning code. Warning Only one error or warning can be displayed on this screen. -
Page 52: Viewing Running Info
7 LCD Operation User Manual 7.4 Viewing Running Info Proceed as follows to look through the detailed running information. Main Screen (Press ENT)→Menu→Run Info (Press ENT) Scroll pages by touching ENT / ESC. E-today: 20.0kWh Vpv1: 250.0V Vpv2: 244.4V E-total: 1999kWh Ipv2: 2.6A... - Page 53 User Manual 7 LCD Operation If the protection function is triggered, the inverter will automatically disconnect from the grid with the ”Error xxx” state displayed on the LCD main screen. After the grid voltage or frequency recovers to the specified range, the inverter will start running normally and can reconnect to the grid.
- Page 54 7 LCD Operation User Manual Tab. 7-4 Default Parameters for Grid Standards Other Parameter (Default) 253.0 253.0 253.0 253.0 253.0 253.0 253.0 max-rec 205.0 205.0 182.0 182.0 205.0 205.0 205.0 min-rec 10-Minute Over-voltage Protection ON: enables the protection function by default. The inverter will automatically disconnect from the grid within 3 s when the average voltage for a 10 min period exceeds the set-point of 10 Min Over Vtg.
- Page 55 Fig. 7-2 Volt-watt Response Curve (“AU” for example) Grid Protection Voltage Adjusting All Sungrow’s inverters are compliant with the standard AS/NZS 4777 related to grid protection requirements. In order to work with unstable utility grids, inverters are equipped with automatic protection voltage adjusting function (disabled by default).
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Page 56: Zero-Export Setting
With the password 111, the zero-export setting can only be done at the first time. The later modification can be performed by professionals only, please contact SUNGROW. 7.5.4 Adding the Existing Inverter Rated-P: rated power of the existing inverter. -
Page 57: Parameter Reset
User Manual 7 LCD Operation + (Leading): the inverter is sourcing reactive power to the grid. PF： +1.000 - (Lagging): the inverter is sinking reactive power from the grid. 7.5.6 Parameter Reset All settable parameters will return to the default values once the “Param Reset”... -
Page 58: Ethernet Configuration
7 LCD Operation User Manual 7.5.11 Ethernet Configuration The Ethernet setting is reserved for later usage. Touch ENT to select and press ENT to confirm. DHCP: OFF: The IP address should be assigned manually. ON: Automatically assign IP address from the home router. -
Page 59: Setting The Country
User Manual 7 LCD Operation Main Screen (Press ENT)→Menu (Touch ESC)→Time (Press ENT) DD / MM / YY DD, MM, and YY stand for day, month, and year Date: 05 / 01 / 17 respectively. hh, mm, and ss stand for hour, minute, and second respectively. - Page 60 7 LCD Operation User Manual When the grid is set to “EE” or “EG”, the reactive power regulation will be in PF mode with the power factor of +0.90 (0.90 lagging). Tab. 7-7 Grid Standard Description Grid company Code Company AusGrid, NSW Ergon Energy, QLD SA Power Networks,SA...
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Page 61: Viewing Device Info
User Manual 7 LCD Operation Refer to Tab. 7-3 for the parameter explanation and range. If you (qualified personnel only) need to modify the voltage protective parameters, please refer to “Single/Multiple Protection”. 7.10 Viewing Device Info Main Screen (Press ENT)→Menu (Touch ESC)→Device Info (Press ENT) These interfaces show the read-only information. -
Page 62: Troubleshooting And Maintenance
4. Check whether the voltage of DC input exceeds the inverter start-up voltage. 5. If all the above conditions are OK, please contact SUNGROW. 8.1.2 Errors on the App or LCD Screen If an error occurs, the “Error” state will be shown on the main screen. We need the following information to provide you with the best assistance: ... - Page 63 (stage I) 3. If the grid voltage is within the permissible range, contact Sungrow Service Dept. Transient over-voltage. 1. This is a short-term fault due to grid grid transient condition.
- Page 64 Grid failure (Islanding) 3. Check whether grid is not in service. 4. If all conditions are OK and this fault still occurs in the LCD screen, contact Sungrow Service Dept. injection over-current. 1. Wait a moment for inverter recovery.
- Page 65 1. Wait a moment for inverter recovery. Relay fault on the grid 2. If the fault occurs repeatedly, contact side. Sungrow Service Dept. 1. Check whether there is a reliable inverter grounding line. insulation 2. Check whether one of the PV strings is resistance of PV to short-circuited with ground.
- Page 66 Sungrow Service Dept. upper limit. Communication alarm 1. Wait 1 minute for inverter recovery. between master DSP 2. If the fault persists, contact Sungrow and slave DSP. Service Dept. Alarm for no inverter Contact Sungrow Service Dept. type setting.
- Page 67 (stage II) parameters, ask utility grid company for solution. Grid under-frequency. The grid frequency is 3. If the grid frequency is within the permissible range, contact Sungrow Service below the protective value, which is lower Dept. than protective value of error 009.
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Page 68: Routine Maintenance
1. Inverter can normally be connected to the External memory grid. reading/writing 2. Power on the inverter again. If the fault warning. persists, contact Sungrow Service Dept. Abnormal communication Check whether power cable warning connections of the meter are correct. - Page 69 Unauthorized alterations will void guarantee and warranty claims and in most cases terminate the operating license. SUNGROW shall not be held liable for any damage caused by such changes. Any malfunction that may impair the inverter safety operation must be repaired immediately before the inverter is restarted.
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Page 70: System Decommissioning
9 System Decommissioning 9.1 Disconnecting the Inverter For maintenance or other service work, the inverter must be switched off. Proceed as follows to disconnect the inverter from the AC and DC power sources. Lethal voltages or damage to the inverter will follow if otherwise. Stop the inverter via the LCD menu. -
Page 71: Dismantling The Inverter
User Manual 9 System Decommissioning 9.2 Dismantling the Inverter Risk of burn injuries and electric shock! Do not touch any inner live parts until at least 10 minutes after disconnecting the inverter from the utility grid and the PV input. Refer to “5 Electrical Connection”... -
Page 72: Appendix
10 Appendix 10.1 Technical Data 10.1.1 –S Series Parameters SG2K-S SG2K5-S SG3K-S Input Data Max. PV input power 3000 W 3200 W 4000 W Max. PV input voltage 600 V Startup voltage 120 V Nominal input voltage 360 V MPP voltage range 90 V–560 V... - Page 73 User Manual 10 Appendix Parameters SG2K-S SG2K5-S SG3K-S (THD) DC current injection <0.5% (of nominal current) >0.99 at default value at nominal power Power factor (adj. 0.8 leading to 0.8 lagging) Protection reverse connection protection AC short circuit protection Leakage current protection...
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Page 74: D Series
10 Appendix User Manual 10.1.2 –D Series Parameters SG3K-D SG5K-D SG8K-D Input Data Max. PV input power 4000 W 6500 W 10400 W Max. PV input voltage 600 V Startup voltage 120 V Nominal input voltage 360 V MPP voltage range 90 V–560 V 90 V–560 V 90 V–540 V... - Page 75 User Manual 10 Appendix Parameters SG3K-D SG5K-D SG8K-D Leakage current protection Low voltage fault ride through (LVFRT) Anti-islanding protection Yes (frequency shift) DC switch Optional Overvoltage category III [AC], II [DC] [AC], Overvoltage protection II [AC] II [AC] [DC] Safety protection class System Data Max.
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Page 76: Quality Assurance
Evidence During the warranty period, the customer shall provide the product purchase invoice and date. In addition, the trademark on the product shall be undamaged and legible. Otherwise, SUNGROW has the right to refuse to honor the quality guarantee. Conditions ... - Page 77 Software Licenses It is prohibited to use data contained in firmware or software developed by SUNGROW, in part or in full, for commercial purposes by any means. It is prohibited to reverse engineer, crack, or perform any other operations that compromise the original program design of the software developed by SUNGROW.
- Page 78 Sungrow Power Korea Limited Tokyo Seoul +81 3 6262 9917 +82 70 7719 1889 japanservice@jp.sungrowpower.com service@kr.sungrowpower.com Malaysia Philippines Sungrow SEA Sungrow Power Supply Co., Ltd Selangor Darul Ehsan Mandaluyong City +60 19 897 3360 +63 9173022769 service@my.sungrowpower.com service@ph.sungrowpower.com Thailand Spain Sungrow Ibérica S.L.U.
- Page 79 Sungrow Deutschland GmbH Turkey Istanbul Representative +40 241762250 Bureau service.romania@sungrow.co Istanbul +90 212 731 8883 service.turkey@sungrow.co U.S.A, Mexico Sungrow Power UK Ltd. Sungrow USA Corporation Milton Keynes Phoenix Arizona +44 (0) 0908 414127 +1 833 747 6937 service.uk@sungrow.co techsupport@sungrow-na.com Vietnam...