Sungrow SG2K-S User Manual
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Sungrow SG2K-S User Manual

Pv grid-connected inverter
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User Manual
SG2K-S / SG2K5-S / SG3K-S /
SG3K-D / SG3K6-D / SG4K-D /
SG4K6-D / SG5K-D / SG6K-D
PV Grid-Connected
Inverter
SG2-6K-UEN-Ver14-202003 Version：1.4

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Summary of Contents for Sungrow SG2K-S

  • Page 1 User Manual SG2K-S / SG2K5-S / SG3K-S / SG3K-D / SG3K6-D / SG4K-D / SG4K6-D / SG5K-D / SG6K-D PV Grid-Connected Inverter SG2-6K-UEN-Ver14-202003 Version：1.4...
  • Page 3 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 perform reverse engineering, cracking, or any other operations that compromise the original program design of the software developed by SUNGROW.

  • Page 4: About This Manual

    (PV) system. You can get additional information about other devices at www.sungrowpower.com or on the webpage of the respective component manufacturer. Validity This manual is valid for the following inverter models:  SG2K-S  SG2K5-S  SG3K-S  SG3K-D ...
  • Page 5 Symbols Safety instructions will be highlighted with the following symbols. Symbol Explanation Indicates a hazard with a high level of risk that, if not avoided, will result in death or serious injury. Indicates a hazard with a medium level of risk that, if not avoided, could result in death or serious injury.

  • Page 6: Table Of Contents

    Contents About This Manual ..............II Safety ..................1 PV Panels .................. 1 Utility Grid .................. 1 Inverter ..................2 Skills of Qualified Personnel ............3 Product Description ............4 Intended Use ................4 Product Introduction ..............5 2.2.1 Model Description ..............5 2.2.2 Appearance ................
  • Page 7 4.2.1 Installation Environment Requirements ........29 4.2.2 Carrier Requirements .............. 29 4.2.3 Installation Angle Requirements ..........29 4.2.4 Installation Clearance Requirements ........30 Installation Tools ..............30 Installing the Inverter ............... 32 Electrical Connection ............35 Safety Instructions ..............35 Terminal Description ..............36 Additional Grounding Connection ..........
  • Page 8 7.5.1 Inputting the Password ............57 7.5.2 Setting Protective Parameters ..........58 7.5.3 Total Export Setting ..............60 7.5.4 Adding Already Installed Inverter Power ........61 7.5.5 Parameter Reset ..............61 7.5.6 GND Detection ................ 61 7.5.7 Energy Adjustment ..............62 7.5.8 Setting Communication Parameter ..........

  • Page 9: Safety

     The safety instructions in this manual cannot cover all the precautions that should be followed. Perform operations considering actual onsite conditions.  SUNGROW shall not be held liable for any damage caused by violation of the safety instructions in this manual. 1.1 PV Panels PV strings will produce electrical power when exposed to sunlight and can cause a lethal voltage and an electric shock.

  • Page 10: Inverter

    1 Safety User Manual All electrical connections must be in accordance with local and national standards. Only with the permission of the utility grid, the inverter can be connected to the utility grid. 1.3 Inverter Danger to life from electric shocks due to live voltage Do not open the enclosure at any time.

  • Page 11: Skills Of Qualified Personnel

    User Manual 1 Safety Only qualified personnel can change the country setting. Unauthorized alteration of the country setting may cause a breach of the type-certificate marking. Risk of inverter damage due to electrostatic discharge (ESD). By touching the electronic components, you may damage the inverter. For inverter handling, be sure to: ...

  • Page 12: Product Description

    2 Product Description 2.1 Intended Use SG2K-S / SG2K5-S / SG3K-S / SG3K-D / SG3K6-D / SG4K-D / SG4K6-D / SG5K-D / SG6K-D, a transformerless single-phase PV grid-connected inverter, is an integral component in the PV power system. The inverter is designed to convert the direct current power generated from the PV modules into grid-compatible AC current and feeds the AC current to the utility grid.

  • Page 13: Product Introduction

    User Manual 2 Product Description Item Description Note SG2K-S, SG2K5-S, SG3K-S, SG3K-D, Inverter SG3K6-D, SG4K-D, SG4K6-D, SG5K-D and SG6K-D. Single-phase or Measures the export power and communicates three-phase energy with the inverter via an RS485 connection. meter (optional) Utility grid Grid grounding system types: TT, TN.

  • Page 14: Appearance

    2 Product Description User Manual 2.2.2 Appearance Fig. 2-2 Inverter Appearance (-D series for reference) * The image shown here is for reference only. The actual product you receive may differ. Item Name Description Positive and negative DC input connectors. PV terminals One or two pairs, depending on inverter model.

  • Page 15: Dimensions

    Model W (mm) H (mm) D (mm) SG2K-S / SG2K5-S / SG3K-S SG3K-D / SG3K6-D / SG4K-D / SG4K6-D / SG5K-D / SG6K-D 2.2.4 LCD Panel The LCD panel with a screen, an indicator and two buttons is on the front of the inverter.

  • Page 16: Function Description

    PV system.  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 17: Regular Operational Voltage Range

    User Manual 2 Product Description 2.3.2 Regular Operational Voltage Range The inverters can operate within the allowable voltage range for at least the specified observation time. The setting of the conditions depends on whether the connection is due to a normal operational start-up or an automatic reconnection after tripping of the interface protection.

  • Page 18: Regular Operational Frequency Range

    2 Product Description User Manual Parameter EU, PL 25% Pn/min or Disabled or 10% Pn/min 20% Pn/min 10% Pn/min 195.5 184.0 for stage I stage I 103.5 for stage 184.0 184.0 34.5 stage II 287.5 264.5 264.5 Tab. 264.5 1.5 for stage 3.0 for stage I 1.35 0.3 for stage II...
  • Page 19 User Manual 2 Product Description specified observation time. The setting of conditions depends on whether the connection is due to a normal operational start-up or an automatic reconnection after tripping of the interface protection. When the frequency level is out of the operational levels, the inverter will disconnect from the grid.

  • Page 20: Active Power Regulation

    2 Product Description User Manual Parameter 25% Pn/min or Disabled for initial connection and 10% Pn/min for 10% Pn/min reconnection (Hz) 47.50 47.50 46.00 55.00 47.50 47.50 (Hz) 51.50 50.60 52.00 62.50 51.50 52.00 Tab. * 25% Pn/min for initial connection and 10% Pn/min for reconnection. Tab.
  • Page 21 User Manual 2 Product Description adjusted in -20 % per Volt. Over-Frequency Response When there is an increase in grid frequency which exceeds the Start value, the inverter will reduce the power output linearly with an increase of frequency until the End value is reached.
  • Page 22 2 Product Description User Manual Inverter to disconnect when f 51.5 Hz OverFrq Start OverFrq End Grid Frequency, Hz Fig. 2-7 Active Power Response at Over-frequency (curve A) Inverter to disconnect when f 51.5 Hz OverFrq Start OverFrq End Grid Frequency, Hz Fig.
  • Page 23 User Manual 2 Product Description =0, P =25%*P nom [%] Gradient: 20%*P Gradient: 20%*P , not less than 5%*P t (min) reset_derating 1max =15 min 2max (5 min) =5 min 3.45 min Fig. 2-9 Power Restoration in Condition of Transient Over-frequency (IT) Where the P is the minimum power obtained during the transient over-frequency.
  • Page 24 2 Product Description User Manual Parameter Description NL, EU, PL Recovery waiting time after 30 s 2-under under-frequency rising. Only configurable for curve Under-frequency rising recovery B, equal to the Start value 1-under point. by default. The following figure shows the under-frequency response. Between the Start value and the End value, all adjustable power generation systems shall reduce (for frequency increase) or increase (for frequency decrease) the active power Pm generated instantaneously, as shown on the...

  • Page 25: Reactive Power Regulation

    User Manual 2 Product Description If the grid frequency increases and is between 49.80 Hz and 50.20 Hz, the active power supplied to the grid will recover with a gradient that not exceeds 10 % of the maximum active power per minute. 2.3.5 Reactive Power Regulation The inverter is capable of operating in the following reactive power control modes for the purpose of providing support to the grid.
  • Page 26 2 Product Description User Manual Parameter DE, FR BE, LUX V1 Ref. 93 % 80 % 80 %–100 % 90 % 90 %–92 % V2 Ref. 97 % 95 % 80 %–100 % 92 % 92 %–100 % V3 Ref. 103 % 105 % 100 %–120 %...
  • Page 27 User Manual 2 Product Description Q/Sn Max. leading Q/Sn V3 Ref. V4 Ref. V1 Ref. V2 Ref. Max. lagging Q/Sn Grid voltage, V Fig. 2-13 Reactive Power Control Curve in Q(U) Curve (“NL”, “EU”, “PL”)  Q(U) curve for the country Italy (“IT”) Tab.
  • Page 28 2 Product Description User Manual V2s = 1.10 Vn V1s = 1.08 Vn V1i = 0.92 Vn V2i = 0.90 Vn Fig. 2-14 Reactive Power Control Curve in “IT” Q(U) Mode Power Related Control Mode Q(P) The power related control mode controls the active power factor (PF) of the inverter output as a function of its active power output.
  • Page 29 User Manual 2 Product Description 100% COS Ф Power (P/Prated, %) Reactive Fig. 2-15 Power Regulation Curve in Q(P) Mode  Q(P) curve for countries “NL”, “EU”, “PL” Tab. 2-19 “Q(P)” Mode Parameters Explanation (“NL”, “EU”, “PL”) Parameter Explanation Default Range QP_P1 Active power at point P1 (in %)

  • Page 30: Spi And Auto Test (Italy Only)

    2 Product Description User Manual  Q(P) curve for the country Italy (“IT”) Tab. 2-20 Italy “Q(P)” Mode Parameters Explanation Parameter Explanation Default Range Power A Active power at point A (in %) 20 % 20 %–100 % Power B Active power at point B (in %) 50 % 20 %–100 %...
  • Page 31 User Manual 2 Product Description Note: The local control will be automatically set to “ON” when a remote control command is reported to the inverter. Tab. 2-21 Frequency Protection Parameters in Conditions of SPI (“IT”) LCD Setting Remote Control Explanation 0 (OFF) 1 (ON) Min.

  • Page 32: Unpacking And Storage

    Check the inner contents for damage after unpacking. Check the delivery contents for completeness according to the packaging list. Contact SUNGROW or the supplier in case there is any damage or incompleteness. Do not dispose of the original packing case. It is recommended to store the inverter in it.
  • Page 33 Grid Monitoring:VDE 0126-1-1 阳 光 电 源 股 份 有 限 公 司 SUNGROW POWER SUPPLY CO., LTD. w w w. s u n g r o w p o w e r. c o m 中 国 制 造...

  • Page 34: Scope Of Delivery

    3 Unpacking and Storage User Manual 3.3 Scope of Delivery Standard Delivery Wall-mounting bracket Documents Inverter Crimp contact M4x80 screw set DRM / Meter connector M4x10 grounging screw AC connector set PV connector set Fig. 3-2 Delivery Contents The documents include the Quick User Manual, quality certificates, packaging list, warning labels and product test reports.

  • Page 35: Inverter Storage

    User Manual 3 Unpacking and Storage  The meter figures in this document have been created for the single-phase Energy Meter unless otherwise specified.  More detailed information on the Energy Meter can be found in the respective Quick Installation Guide. 3.4 Inverter Storage Proper storage is required if the inverter is not installed immediately.

  • Page 36: 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 37: Installation Environment Requirements

    User Manual 4 Mechanical Mounting 4.2.1 Installation Environment Requirements  The installation environment is free of inflammable or explosive materials.  The location should be not accessible to children.  The ambient temperature and relative humidity must meet the following requirements.

  • Page 38: Installation Clearance Requirements

    4 Mechanical Mounting User Manual 4.2.4 Installation Clearance Requirements Reserve enough clearance around the inverter to ensure sufficient space for heat dissipation. Clearance requirement and multiple installation: 400 mm 400 mm For multi-row installation, the distance between two adjacent rows must be at least 400 mm.
  • Page 39 User Manual 4 Mechanical Mounting 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 Wire stripper Phillips screwdriver Tool bit: M4 Specification: M4 Hydraulic plier Crimping tool Wrench for MC4 terminal Crimping...

  • Page 40: Installing The Inverter

    4 Mechanical Mounting User Manual 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 41 User Manual 4 Mechanical Mounting Wall-mounting bracket Fender washer Spring washer Self-tapping screw Expansion tube Mount the inverter to the bracket, and secure it with an M4x80 screw (torque: 1.5 Nm). To protect the inverter from theft, you can lock it with a padlock.
  • Page 42 4 Mechanical Mounting User Manual...

  • Page 43: Electrical Connection

    5 Electrical Connection 5.1 Safety Instructions Prior to any electrical connections, keep in mind that the inverter has dual power supplies. It is mandatory for the qualified personnel to wear personal protective equipments (PPE) during the electrical work. Danger to life due to a high voltage inside the inverter ...

  • Page 44: Terminal Description

    5 Electrical Connection User Manual 5.2 Terminal Description All electrical terminals are located at the bottom of the inverter. Com. Fig. 5-1 Terminal Description * Image shown here is for reference only. The actual product you receive may differ. Tab. 5-1 Terminal Descriptions Item Terminal Description...

  • Page 45: Additional Grounding Connection

    User Manual 5 Electrical Connection 5.3 Additional Grounding Connection  Since the inverter is a transformerless inverter, neither the negative pole nor the positive pole of the PV string can be grounded. Otherwise, the inverter will not operate normally.  Connect the additional grounding terminal to the protective grounding point before AC cable connection, PV cable connection, and communication cable connection.

  • Page 46: Ac Cable Connection

    An independent two-pole circuit breaker is installed on the output side of the inverter to ensure safe disconnection from the grid. The recommended specifications are as follows: Inverter Model Specification SG2K-S / SG2K5-S / SG3K-S / SG3K-D 25 A SG3K6-D / SG4K-D / SG4K6-D / SG5K-D 32 A SG6K-D...

  • Page 47: Assembling The Ac Connector

    45 mm, and strip the wire insulation by 12 mm– 16 mm. The cross-section are shown in the following table Cross-section Range / Model Seal Recommended SG2K-S / SG2K5-S / –6 mm 4 mm / 4 mm 10 mm–12 mm SG3K-S / SG3K-D SG3K6-D / SG4K-D / –6 mm...
  • Page 48 5 Electrical Connection User Manual Seal 10mm-12mm 12mm-16mm 16mm-21mm Fully insert the conductors into the corresponding cable holes and close the clamp. Observe the terminal layout on the block. Do not connect the phase wires to "PE" terminal or PE wire to "N" terminal. Otherwise, unrecoverable damage to the inverter may follow.

  • Page 49: Installing The Ac Connector

    User Manual 5 Electrical Connection Click 5.4.3 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.

  • Page 50: Dc Cable Connection

    5 Electrical Connection User Manual 5.5 DC Cable Connection Electric shock! The PV array will generate lethal high voltage once exposed to sunlight. Make sure the PV array is well insulated to ground before connecting it to the inverter. There is a risk of inverter damage! The following requirements must be met.
  • Page 51 User Manual 5 Electrical Connection Total PV Input Open-circuit Max. current for Model Power Limit Voltage Limit input connector 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 There are two PV input areas, each with its MPP tracker.
  • Page 52 5 Electrical Connection User Manual Open-circuit Max. current for Total PV Input Model Voltage Limit input connector Power Limit (PV1 / PV2) (PV1 / PV2) SG4K-D 5200 W 600 V/600 V 12 A/12 A SG4K6-D 6000 W 600 V/600 V 12 A/12 A SG5K-D 6500 W...

  • Page 53: Assembling The Pv Connector

    User Manual 5 Electrical Connection 5.5.2 Assembling the PV Connector SUNGROW provides corresponding plug connectors in the scope of delivery for quick connection of PV inputs. DC cables should be connected to the inverter via PV connectors which are included in the scope of delivery.

  • Page 54: Installing The Pv Connector

    5 Electrical Connection User Manual Assemble the cable ends Positive Crimp Contact with the crimping pliers. Negative Crimp Contact Lead the cable through cable gland, and insert into the insulator until it snaps into place. Gently pull the cable backward to ensure firm connection.

  • Page 55: Rs485 Communication Connection

    Arc or contactor over temperature may occur if the PV connectors are not firmly in place, and SUNGROW shall not be held liable for any damage caused. Connect the PV connectors to corresponding terminals until there is an audible click.

  • Page 56: Energy Meter Connection

    The Energy Meter should be installed next to the main switch. Solar switch Main Meter switch link Network Utility Sungrow meter meter grid PV strings Inverter Home Appliance Proceed as follows to connect the RS485 wires to the inverter. (Optional) If the RS485 cable is prepared by the customer, we recommend the shield twisted pair cable or shield Ethernet cable.
  • Page 57 User Manual 5 Electrical Connection Tab. 5-2 Pin Definitions of the RJ45 Plug RJ45 connector Color Description White-orange RS485- B TIA/EIA 568A Orange RS485+ A White-green RS485- B TIA/EIA 568B Green RS485+ A Pin 1 and pin 2 are configured to supply power for communication modules.
  • Page 58 5 Electrical Connection User Manual Sealing nut Unscrew waterproof from Meter terminal. Align the communication connector and the Meter terminal. Plug the connector and make them engage perfectly until a “Click” is heard or felt. Secure the screw nut to the inverter bottom.

  • Page 59: Commissioning

    Commissioning 6.1 Inspection before Commissioning Check the following items before starting the inverter:  The inverter DC switch and external circuit breaker are disconnected.  The inverter should be accessible for operation, maintenance and service.  Nothing is left on the top of the inverter. ...
  • Page 60 6 Commissioning User Manual The LCD screen will be activated 5 seconds later. Touch to choose the country and touch ENT to confirm.  If the country is set to “FR” France-50 Overseas-50 Overseas-60 (France), select the grid standard on the next screen. ...
  • Page 61 User Manual 6 Commissioning If any detection fails, the error/warning code will be displayed. Touch any button to quit this interface and enter the main screen. Observe the status of the indicator. Tab. 6-2 Indicator Status Description Status Description The inverter is running normally, or with a Steady on.

  • Page 62: Lcd Operation

    7 LCD Operation 7.1 Button Function The inverter offers two buttons. Please refer to the following table before any operation of the inverter. Tab. 7-1 Button Function Button Description Navigate down or increase the setting value. Confirm the selection or settings. Risk of burns due to hot components! Do not touch any hot parts (such as heat sinks) during operation.
  • Page 63  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.

  • Page 64: Menu Structure

    7 LCD Operation User Manual Viewing the Active Error/Warning If the status on the main screen is “Error xxx”, Touch to view the active error code. If the inverter is running with a warning, Touch to view the active warning code. Only one error or warning can be displayed on this screen.

  • Page 65: Viewing Running Info

    ) → Settings (Touch ENT) Touch to change the value and Touch ENT to move the cursor. Input the password. Please ask SUNGROW or your dealer for this password. Touch ENT to confirm the password and enter the submenu. Touch to navigate down and touch ENT to confirm the selection.

  • Page 66: Setting Protective Parameters

    7 LCD Operation User Manual 7.5.2 Setting Protective Parameters Protective parameters are designed for the thresholds that can trigger the protective function of the inverter. The thresholds are compliant with the requirements of local safety standards and the utility grid. If the protection function is triggered, the inverter will automatically disconnect from the grid with the ”Error xxx”...
  • Page 67 User Manual 7 LCD Operation Tab. 7-4 Default Protective Parameters for Countries in Europe LUX, Parameter NL, EU, PL 287.5 264.5 255.3 264.5 253.0 264.5 184.0 184.0 184.0 195.5 184.0 195.5 287.5 264.5 255.3 264.5 276.0 264.5 287.5 264.5 255.3 264.5 287.5 264.5...

  • Page 68: Total Export Setting

    7 LCD Operation User Manual Grid Protection Voltage Adjusting All SUNGROW inverters are compliant with the local standard related to grid protection requirements. In order to work with unstable utility grid, inverters are equipped with automatic protection voltage adjusting function (disabled by default).

  • Page 69: Adding Already Installed Inverter Power

    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. The range of export power will automatically change: When the existing inverter is disabled: 0 to (rated power of the inverter) When the existing inverter is enabled: ...

  • Page 70: Energy Adjustment

    7 LCD Operation User Manual 7.5.7 Energy Adjustment If the accumulative value “E-total” displayed on inverter screen is different from the value indicated on the metering device, you should adjust the energy deviation. (Energy Adj. value) = (Real measured value) - (E-total reading value) Touch ENT for modification.

  • Page 71: Viewing The Error Record

    Touch ENT to Password: 0 0 0 move the cursor. Input the password. Please ask SUNGROW or your dealer for this password. Touch to choose the country and touch ENT to confirm. If the country selected is not in the list, please choose Other and then set the protection parameters manually.
  • Page 72 7 LCD Operation User Manual If the country is set to “FR” France-50 Overseas-50 (France), select grid Overseas-60 standard on the next screen. If the country is set to “DE” (Germany), set the reactive response mode parameters. “DE” PF parameter setting: “DE”...

  • Page 73: Viewing Device Info

    Italian. Touch ENT to confirm “Auto Test” and start the auto test. Please ask SUNGROW or your dealer for this password. Touch ENT to start the auto test. If the inverter is in the status of “Error” or “Turn off”, it cannot start the test and a prompt interface will appear.
  • Page 74 7 LCD Operation User Manual (1) 81>.S1: over-frequency test (stage I) (2) 81<.S1: under-frequency test (stage I) (3) 59.S1: over-voltage test (stage I) (4) 27.S1: under-voltage test (stage I) (5) 81>.S2: over-frequency test (stage II) (6) 81<.S2: under-frequency test (stage II) Imp.: the default protection threshold (7) 59.S2: over-voltage test (stage II)

  • Page 75: Spi Local Control

    User Manual 7 LCD Operation thresholds (Imp.) compliant with standard CEI 0-21 and the actual values (Ril.) are for your reference only. Pass.: The inverter will restore the normally used settings and automatically reconnect to the grid. Fail: The inverter will report the error 105.
  • Page 76 7 LCD Operation User Manual The SPI remote control via RS485 connection to an external device can also change the thresholds. When the local control and remote control modes exist at the same time, the remote control takes priority over the local control.

  • Page 77: System Decommissioning

    8 System Decommissioning 8.1 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 78: Dismantling The Inverter

    8 System Decommissioning User Manual 8.2 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 79: Troubleshooting And Maintenance

    (stage I) 3. If the grid voltage is within the permissible range, contact SUNGROW. Transient over-voltage. 1. This is a short-term fault due to grid The grid transient condition. Wait a moment for inverter voltage exceeds recovery.
  • Page 80 Grid under-frequency. solution. The grid frequency is 3. If the grid frequency is within the below the protective permissible range, contact SUNGROW. value. (stage I) 1. Check whether AC circuit breaker is triggered. 2. Check whether AC cables are all firmly connected.
  • Page 81 1. Check the PV strings for ground fault. The leakage current 2. If the fault occurs repeatedly, contact exceeds inverter SUNGROW. allowable upper limit. 1. Check whether the selected country code is correct. 10-minute grid 2. Wait a moment for inverter recovery.
  • Page 82 2. If the grid frequency exceeds the The slave DSP detects allowable range of inverter protection that the grid frequency parameters, ask utility grid company for exceeds inverter solution. allowable upper limit. 3. If the grid frequency is within the allowable range, contact SUNGROW.
  • Page 83 SUNGROW. upper limit. Communication alarm 1. Wait 1 minute for inverter recovery. between master DSP 2. If the fault persists, contact SUNGROW. and slave DSP. Alarm for no inverter Contact SUNGROW. model setting. Stop the inverter and disconnect the AC &...
  • Page 84 AC connection grounding line, if there is access to the block nor the second ground, and the fault persists, please PE terminal on the contact SUNGROW. enclosure reliably connected. Bus hardware 1. Wait for inverter recovery after bus over-voltage fault.

  • Page 85: Maintenance

    Restart the inverter only after removing the fault that impairs safety performance. As the inverter contains no component parts that can be maintained, never arbitrarily replace any internal components. For any maintenance need, please contact SUNGROW. Otherwise, SUNGROW shall not be held liable for any damage caused.
  • Page 86 9 Troubleshooting and Maintenance User Manual Servicing of the device in accordance with the manual should never be undertaken in the absence of proper tools, test equipment or the latest revision of the manual which has been clearly and thoroughly understood.

  • Page 87: 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 88 10 Appendix User Manual Parameters SG2K-S SG2K5-S SG3K-S >0.99 at default value at nominal power Power factor (adj. 0.8 leading to 0.8 lagging) Protection PV reverse connection protection AC short circuit protection Leakage current protection Anti-islanding protection Yes (frequency shift)

  • Page 89: D Series

    User Manual 10 Appendix 10.1.2 –D Series Parameters SG3K-D SG3K6-D SG4K-D Input Data Max. PV input power 4000 W 4800 W 5200 W Max. PV input voltage 600 V Startup voltage 120 V Nominal input voltage 360 V MPP voltage range 90 V...560 V MPP voltage range for 160 V...480 V...
  • Page 90 10 Appendix User Manual Parameters SG3K-D SG3K6-D SG4K-D voltage fault ride Yes (only for “DE”, “NL”, “EU”, “PL”, “IT”) through (LVRT) High voltage fault ride Yes (only for “DE”, “NL”, “EU”, “PL”, “IT”) through (HVRT) DC switch III [AC], II [DC] Overvoltage Category Safety protection class System Data...
  • Page 91 User Manual 10 Appendix Parameters SG4K6-D SG5K-D SG6K-D No. of MPPTs Max. number of PV strings per MPPT (PV1/PV2) Max. PV input current 20 A (10 A / 10 A) Max. current for input 24 A (12 A / 12 A) connector Short-circuit current of PV 24 A (12 A / 12 A)

  • Page 92: 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 93: Contact Information

    User Manual 10 Appendix Exclusion of Liability In the following circumstances, SUNGROW has the right to refuse to honor the quality guarantee:  If the free warranty period for the whole machine/components have expired.  If the device is damaged during transport.
  • Page 94 10 Appendix User Manual service@sungrowpower.com +61 2 9922 1522 service@sungrowpower.com.au Brazil France Sungrow Do Brasil Sungrow France – Siege Social Sao Paulo Paris +55 11 2366 1957 service.france@sungrow.co latam.service@sa.sungrowpower.com Germany Greece Service Partner – Survey Digital Sungrow Deutschland GmbH Mü nchen...
  • Page 95 User Manual 10 Appendix Thailand Spain Sungrow Ibé rica S.L.U. Sungrow Thailand Co., Ltd. Navarra Bangkok service.spain@sungrow.co +66 891246053 service@th.sungrowpower.com Romania Turkey Service Partner - Elerex Sungrow Deutschland GmbH Turkey Istanbul Representative +40 241762250 Bureau service.romania@sungrow.co Istanbul +90 212 731 8883 service.turkey@sungrow.co...

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