Sungrow SG2.0RS-S User Manual
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Sungrow SG2.0RS-S User Manual

1-phase pv grid-connected inverter
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1-Phase PV Grid-Connected Inverter
User Manual
SG2.0RS-S / SG2.5RS-S / SG3.0RS-S / SG3.0RS /
SG3.6RS / SG4.0RS / SG5.0RS / SG6.0RS
SG2.0RS-S /
SG3.6RS / SG4.0RS / SG5.0RS /
SG6.0RS1-Phase PV Grid-
Connected InverterUser
ManualSG2.0-6.0RS-UEN-Ver13-
202108
SG2.0-6.0RS-UEN-Ver13-202108

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  • Page 1 1-Phase PV Grid-Connected Inverter User Manual SG2.0RS-S / SG2.5RS-S / SG3.0RS-S / SG3.0RS / SG3.6RS / SG4.0RS / SG5.0RS / SG6.0RS SG2.0RS-S / SG2.5RS-S / SG3.0RS-S / SG3.0RS / SG3.6RS / SG4.0RS / SG5.0RS / SG6.0RS1-Phase PV Grid- Connected InverterUser ManualSG2.0-6.0RS-UEN-Ver13-...

  • Page 3: All Rights Reserved

    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...

  • Page 4: About This Manual

    (PV) system. The reader 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: • SG2.0RS-S • SG2.5RS-S • SG3.0RS-S •...
  • Page 5 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. Indicates a hazard with a low level of risk that, if not avoided, could result in minor or moderate injury.

  • Page 7: Table Of Contents

    Contents All Rights Reserved .....................I About This Manual......................II 1 Safety .........................1 1.1 PV Panels......................1 1.2 Utility Grid ......................1 1.3 Inverter ......................2 2 Product Description ..................3 2.1 System Introduction ..................3 2.2 Product Introduction..................4 2.3 Symbols on the Product ..................6 2.4 LED Panel .....................7 2.5 Circuit Diagram ....................8 2.6 Function Description ..................9 3 Unpacking and Storage...
  • Page 8 5.4.1 Additional Grounding Requirements .............21 5.4.2 Connection Procedure.................21 5.5 AC Cable Connection ...................22 5.5.1 AC Side Requirements ................22 5.5.2 Assembling the AC Connector .............23 5.5.3 Installing the AC Connector..............25 5.6 DC Cable Connection ...................26 5.6.1 PV Input Configuration ................26 5.6.2 Assembling the PV Connectors ............27 5.6.3 Installing the PV Connectors ..............28 5.7 WiNet-S Connection ..................30 5.7.1 Ethernet Communication ..............30...
  • Page 9 7.10.2 Operation Parameters ...............61 7.10.3 Power Regulation Parameters............62 7.10.4 Communication Parameters...............66 7.10.5 Firmware Update ................66 8 System Decommissioning ................68 8.1 Disconnecting the Inverter................68 8.2 Dismantling the Inverter ................68 8.3 Disposal of the Inverter .................69 9 Troubleshooting and Maintenance ..............70 9.1 Troubleshooting ...................70 9.2 Maintenance ....................79 9.2.1 Maintenance Notices................79 9.2.2 Routine Maintenance ................80...

  • Page 11: 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.

  • Page 12: Inverter

    1 Safety User Manual Inverter Danger to life from electric shocks due to live voltage Do not open the enclosure at any time. Unauthorized opening will void warranty and warranty claims and in most cases terminate the operating license. Risk of inverter damage or personal injury •...

  • Page 13: Product Description

    2-1 Inverter Application in PV Power System Description Item Note Compatible with monocrystalline silicon, polycrystalline silicon, PV strings and thin-film modules without grounding. SG2.0RS-S, SG2.5RS-S, SG3.0RS-S, SG3.0RS, SG3.6RS, Inverter SG4.0RS, SG5.0RS, SG6.0RS. Metering device Meter cupboard with power distribution system.

  • Page 14: Product Introduction

    2 Product Description User Manual Description Item Note Utility grid TT，TN-C，TN-S, TN-C-S. House loads that consume electricity. Loads The following figure shows the common grid configurations. Product Introduction Model Description The model description is as follows (take SG3.0RS-S as an example): Appearance The following figure shows the dimensions of the inverter.
  • Page 15 User Manual 2 Product Description figure 2-2 Inverter Appearance Description Name Information about COM2 pin definition, supported DRM Label modes, etc. Complement to the included wall mounting bracket for hang- Hanger ing the inverter. The LED screen indicates the running information and the LED pannel LED indicator indicates the working state of the inverter.

  • Page 16: Symbols On The Product

    2 Product Description User Manual figure 2-3 Dimensions of the Inverter Inverter Model W (mm) H (mm) D (mm) SG2.0RS-S, SG2.5RS-S, SG3.0RS-S SG3.0RS, SG3.6RS, SG4.0RS, SG5.0RS, SG6.0RS Symbols on the Product Symbol Explanation Parameters on the DC side. Parameters on the AC on-grid side.

  • Page 17: Led Panel

    User Manual 2 Product Description Symbol Explanation Read the user manual before maintenance! Burn danger due to the hot surface that may exceed 60℃. Danger to life due to high voltages! Do not touch live parts for 10 minutes after disconnection from the power sources.

  • Page 18: Circuit Diagram

    2 Product Description User Manual table 2-1 State description of the LED indicator LED color State Definition The inverter is operating normally. The inverter is at standby or startup state (not Flashing feeding power into the grid). Blue A system fault has occured. Both the AC and DC sides are powered down.

  • Page 19: Function Description

    After communication connection is established, users can view inverter information, op- erational data and can set inverter parameters through the iSolarCloud. It is recommended to use the communication module from SUNGROW. Using a device from other companies may lead to communication failure or other un- expected damage.
  • Page 20 2 Product Description User Manual Feed-in Limitation Set the feed-in limitation value via iSolarCloud App. When the smart energy meter detects that the export power is greater than the limit value, the inverter will reduce the output power within the specified range. PID Recovery The inverter is equipped with PID phenomenon recovery function to improve the PV power generation.

  • Page 21: Unpacking And Storage

    • Check the inner contents for damage after unpacking. Contact SUNGROW or the transport company in case of any damage or incompleteness, and provide photos to facilitate services. Do not dispose of the original packing case. It is recommended to store the device in the original packing case when the device is decommissioned.

  • Page 22: Mechanical Mounting

    Mechanical Mounting Respect all local standards and requirements during mechanical installation. Safety during Mounting Make sure there is no electrical connection before installation. In order to avoid electric shock or other injury, make sure that holes will not be drilled over any electricity or plumbing installations. Risk of injury due to improper handling •...

  • Page 23: Environment Requirements

    User Manual 4 Mechanical Mounting 4.2.1 Environment Requirements • The installation environment must be 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 24: Clearance Requirements

    4 Mechanical Mounting User Manual 4.2.4 Clearance Requirements Reserve enough clearance around the inverter to ensure sufficient space for heat dissipation. Install the inverter at an appropriate height for ease of viewing the screen and LED indicator and operating switch(es). Installation Tools Installation tools include but are not limited to the following recommended ones.
  • Page 25 User Manual 4 Mechanical Mounting table 4-1 Tool specification Goggles Earplugs Dust mask Protective gloves Insulated shoes Utility knife Marker Wrist strap Wire cutter Wire stripper Hydraulic plier RJ45 crimping tool MC4 terminal Tube terminal Electric screwdriver Slotted screwdriver crimping tool (0.5 (M4, M6) crimping tool (4 (M2)

  • Page 26: Moving The Inverter

    4 Mechanical Mounting User Manual Heat gun Wrench (33 mm, 35 MC4 terminal Multimeter (≥ 600 wrench Vdc) Rubber mallet Hammer drill (φ10) Moving the Inverter Before installation, remove the inverter from the packing case and move it to the installation site.
  • Page 27 User Manual 4 Mechanical Mounting * The image shown here is for reference only. The actual product received may differ. step 2 Place the expansion tubes into the holes. Then secure the wall-mounting bracket to the wall firmly with the expansion bolt sets. step 3 Lift the inverter and slide it down along the wall-mounting bracket to make sure they match perfectly.

  • Page 28: Electrical Connection

    Electrical Connection 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) dur- ing the electrical work. Danger to life due to a high voltage inside the inverter! •...
  • Page 29 User Manual 5 Electrical Connection figure 5-1 Terminals (SG3.0RS for example) * The image shown here is for reference only. The actual product received may differ. table 5-1 Terminal Description Decisive Volt- Description Name Classification MC4 terminals for PV input. PV1+, PV1–, PV2+, DVC-C The terminal number depends on in-...

  • Page 30: Electrical Connection Overview

    5 Electrical Connection User Manual Description Label For external Demand Response Enabling Device R, C ("AU"/"NZ") RSD-1, RSD-2 Reserved Electrical Connection Overview The electrical connection should be realized as follows: (A) PV string (B) Inverter (C) Loads (D) Grid (E) Smart energy meter (optional) (F) AC circuit breaker (G) External device table 5-3 Cable Requirements...

  • Page 31: Additional Grounding Connection

    The ground connection of this additional grounding terminal cannot replace the connection of the PE terminal of the AC cable. Make sure those terminals are both grounded reliably. SUNGROW shall not be held liable for any damage caused by the violation.

  • Page 32: Ac Cable Connection

    5 Electrical Connection User Manual (1) Heat shrink tubing (2) OT/DT terminal step 2 Remove the screw on the grounding terminal and fasten the cable with a screwdriver. step 3 Apply paint to the grounding terminal to ensure corrosion resistance. - - End AC Cable Connection 5.5.1 AC Side Requirements...

  • Page 33: Assembling The Ac Connector

    AC Circuit Breaker An independent two-pole circuit breaker must be installed on the output side of the inverter to ensure safe disconnection from the grid. The recommended specifications are as follows. Recommended Specification Inverter Model SG2.0RS-S/SG2.5RS-S/SG3.0RS-S 25 A SG3.0RS/SG3.6RS/SG4.0RS/SG5.0RS 32 A SG6.0RS 40 A •...
  • Page 34 5 Electrical Connection User Manual step 3 Remove the cable jacket by less than 45 mm, and strip the wire insulation by 12 mm–16 mm. step 4 Open the clamp on the spring-loaded terminal and fully insert the wires into the correspond- ing holes.

  • Page 35: Installing The Ac Connector

    User Manual 5 Electrical Connection step 5 Ensure that the wires are securely in place by slightly pulling them. Tighten the swivel nut to the housing. - - End 5.5.3 Installing the AC Connector High voltage may be present in inverter! Ensure all cables are voltage-free before electrical connection.

  • Page 36: Dc Cable Connection

    MPPT operating voltage range, namely, 40 V to 560 V. 5.6.1 PV Input Configuration • The inverters SG2.0RS-S / SG2.5RS-S / SG3.0RS-S have one PV input with one MPP tracker. • The inverters SG3.0RS / SG3.6RS / SG4.0RS / SG5.0RS / SG6.0RS have two PV in- puts, each with independent MPP tracker.

  • Page 37: Assembling The Pv Connectors

    Do not connect the DC switch and AC circuit breaker before finishing electrical connection. SUNGROW provides corresponding PV connectors in the scope of delivery for quick connection of PV inputs. To ensure IP65 protection, use only the supplied connector or the connector with the same ingress of protection.

  • Page 38: Installing The Pv Connectors

    5 Electrical Connection User Manual 1: Positive crimp contact 2: Negative crimp contact step 3 Lead the cable through cable gland, and insert the crimp contact into the insulator until it snaps into place. Gently pull the cable backward to ensure firm connection. Tighten the ca- ble gland and the insulator (torque 2.5 N.m to 3 N.m).
  • Page 39 • Electric arc or contactor overtemperature may occur if the PV connectors are not firmly in place, and SUNGROW shall not be held liable for any damage caused due to this operation. step 4 Seal the unused PV terminals with the terminal caps.

  • Page 40: Winet-S Connection

    5 Electrical Connection User Manual If the DC input is connected inversely and the DC switch has been rotated to "ON", do not operate immediately. Otherwise, the equipment may be damaged. Please turn the DC switch to "OFF" and remove the DC connector to adjust the polarity of the strings when the string current is lower than 0.5A.
  • Page 41 User Manual 5 Electrical Connection step 3 Unscrew the housing from the communication module. step 4 Thread the network cable through the swivel nut and gasket. Afterwards, route the cable into the opening of the sealing. Finally, insert the cable through the housing. step 5 Insert the RJ45 plug into the front plug connector until there is an audible click and tighten the housing.

  • Page 42: Wlan Communication

    5 Electrical Connection User Manual step 6 Remove the waterproof lid from the COM1 terminal and install WiNet-S. step 7 Slightly shake it by hand to determine whether it is installed firmly. - - End 5.7.2 WLAN Communication step 1 Remove the waterproof lid from the COM1 terminal. step 2 Install the module.
  • Page 43 User Manual 5 Electrical Connection step 2 Remove the seal and lead the cable through the cable gland. step 3 Remove the cable jacket and strip the wire insulation. step 4 (Optional) When using a multi-core multi-strand wire cable, connect the wire head to the cord end terminal.

  • Page 44: Drm Connection

    5 Electrical Connection User Manual step 6 Insert the terminal plug into the COM2 terminal at the bottom side of the inverter and then in- stall the housing. step 7 Slightly pull out the cable and then fasten the swivel nut. Lock the connector with the screw. - - End DRM Connection In Australia and New Zealand, the inverter supports DRM0 as specified in the standard AS/...
  • Page 45 User Manual 5 Electrical Connection step 2 Remove the seal and lead the cable through the cable gland. step 3 Remove the cable jacket and strip the wire insulation. step 4 (Optional) When using a multi-core multi-strand wire cable, connect the wire head to the cord end terminal.
  • Page 46 5 Electrical Connection User Manual step 5 Plug the wires into the corresponding terminals as shown in the following figure. Ensure that the wires are securely in place by slightly pulling them. step 6 Insert the terminal plug into the COM2 terminal at the bottom side of the inverter and then in- stall the housing.
  • Page 47 User Manual 5 Electrical Connection - - End...

  • Page 48: Commissioning

    Commissioning Inspection before Commissioning Check the following items before starting the inverter: • All equipment has been reliably installed. • DC switch(es) and AC circuit breaker are in the "OFF" position. • The ground cable is properly and reliably connected. •...

  • Page 49: Creating A Plant

    "7.3 Account Registration". If you have got the account and password from the distributor/installer or SUNGROW, skip this step. step 3 Download the firmware package to the mobile device in advance. Refer to “Firmware Upa- date”. This is to avoid download failure due to poor on-site network signal.
  • Page 50 6 Commissioning User Manual figure 6-3 Selecting Plant/Inverter Type step 5 Scan the QR code on the communication device or manually enter the serial number of the communication device. Tap Next after the QR code is identified or the serial number entered is correct and then tap CONFIRM.

  • Page 51: Initializing The Device

    User Manual 6 Commissioning blinks quickly when this mode is turned on. Return to the App and the screen displays suc- cessful connection to the inverter WLAN. Tap NEXT. figure 6-6 Turn on EasyConnect Mode The EasyConnect mode can be used only when the router is 2.4 GHz. If the EasyConnect mode fails, refer to the WiNet-S quick guide for the instructions of other modes.
  • Page 52 6 Commissioning User Manual figure 6-8 Upgrade Reminder step 2 After download, it would take around 15 minutes to update. After successful upgrade, the screen will show the version numbers before and after the upgrade as well as the upgrade time.
  • Page 53 User Manual 6 Commissioning The parameter Country/Region must be set to the country (region) where the inver- ter is installed at. Otherwise, the inverter may report errors. step 4 When the country is set to Australia, additionally set the applicable network service provider and then the grid type.

  • Page 54: Configuring The Plant

    6 Commissioning User Manual Network Service Provider Grid Type • UE-ST-2008.1: ≤ 10 kVA for single- phase & 30 kVA for three-phase United Energy • UE-ST-2008.2: ＞ 30 kVA three-phase PowerWater AS/NZS 4777.2:2015 • TS129-2019: < 10 kW for single-phase &...
  • Page 55 User Manual 6 Commissioning figure 6-11 Display the Added Inverter step 2 Fill in the plant information. The fields marked with * must be filled in. figure 6-12 Entering Plant Information step 3 (Optional) Fill in the tariff information. The electricity price can be set to a specific value or Time-of-Use tariff.
  • Page 56 6 Commissioning User Manual figure 6-13 Entering Tariff Information step 4 Fill in the end user's e-mail address. The first time you fill in the end user's e-mail address, the system will create an account for the end user and send an email to the end user. The end user can activate the account via the email.
  • Page 57 Tab the inverter to view the live data about voltage, current, power or curve. figure 6-16 Live Data View Function Setting Contact Sungrow service to enable live data function of devices. Once enabled, live data function is available for 3 hours per day by default. To make it available for 24 hours, contact SUNGROW.
  • Page 58 6 Commissioning User Manual step 8 Tab BACK to the COMPLETED screen. Tab DASHBOARD to return and manually refresh the page until the newly created plant is displayed with status commissioned. - - End...

  • Page 59: Isolarcloud App

    App. * To achieve direct login via WLAN, the wireless communication module developed and manufactured by SUNGROW is required. The iSolarCloud App can also establish communi- cation connection to the inverter via Ethernet connection.

  • Page 60: Account Registration

    7 iSolarCloud App User Manual Account Registration The account distinguishes two user groups, end user and distributor/installer. • The end user can view plant information, create plants, set parameters, share plants, etc. • The distributor/installer can help the end user to create plants, manage, install, or main- tain plants, and manage users and organizations.

  • Page 61: Login

    User Manual 7 iSolarCloud App step 4 Fill in the registration information, including email, verification code, password and affirm- ance and country (region). The distributor/installer has the permission to fill in the company name and the code of upper level distributor/installer. The code of upper level distributor/installer can be obtained from the upper level distributor/installer.
  • Page 62 7 iSolarCloud App User Manual figure 7-1 Enabling the WLAN Hotspot step 2 Connect the mobile phone to the WLAN network named as "SG-xxxxxxxxxxx" (xxxxxxxxxxx is the serial number indicated on the side of the communication module). step 3 Open the App to enter the login screen. Tap Local Access to enter the next screen. step 4 Select WLAN and select the device (SN), then enter the password and tap LOGIN.

  • Page 63: Initial Settings

    User Manual 7 iSolarCloud App figure 7-3 WLAN Local Access step 6 After finishing the settings, tap TUNR ON DEVICE at the upper right corner and the device will be initialized. The App will send start instructions and the device will start and operate. step 7 After initialization settings, the App will return automatically to the home page.

  • Page 64: Function Overview

    7 iSolarCloud App User Manual The actual initializing procedure may differ due to different countries. Please fol- low the actual App guidance. For some countries, you should initialize parameters according to local grid re- quirements. For details, see "6.5 Initializing the Device".

  • Page 65: Home

    User Manual 7 iSolarCloud App figure 7-4 App Key Function Menu Home Home page of the App is shown in the following figure.

  • Page 66: Run Information

    7 iSolarCloud App User Manual figure 7-5 Home table 7-1 Home Page Description Description Name Present operation state of the inverter Inverter state Shows the PV power generation power, feed-in power, etc. Energy flow The line with an arrow indicates energy flow between con- chart nected devices, and the arrow pointing indicates energy flow direction.

  • Page 67: Records

    User Manual 7 iSolarCloud App table 7-2 Description of Run Information Description Item Shows voltage and current of every PV string. PV information Shows basic information such as running state, on-grid running time, Inverter negative voltage to grid, bus voltage, internal air temperature, inver- information ter efficiency, etc.
  • Page 68 7 iSolarCloud App User Manual figure 7-7 Chart The App displays power generation records in a variety of forms, including daily power gen- eration graph, monthly power generation histogram, annual power generation histogram and total power generation histogram. table 7-3 Description of Power Curve Description Item Daily...
  • Page 69 User Manual 7 iSolarCloud App figure 7-8 Fault Alarm Record Click to select a time segment and view corresponding records. Select one of the records in the list and click the record, to view the detailed fault info as shown in following figure. figure 7-9 Detailed Fault Alarm Information Event Record Tap Event Record to enter the screen, as shown in the following figure.

  • Page 70: More

    7 iSolarCloud App User Manual figure 7-10 Event Record Click to select a time segment and view corresponding records. 7.10 More Tap More on the navigation bar to enter the corresponding screen, as shown in the following figure. figure 7-11 More In addition to viewing the WLAN configuration and App software version, the More screen supports the following operations: •...

  • Page 71: Operation Parameters

    User Manual 7 iSolarCloud App figure 7-12 System Parameters Boot/Shutdown Tap Boot/Shutdown to send the boot/shutdown instruction to the inverter. For Australia and New Zealand, when the DRM state is DRM0, the "Boot" option will be prohibited. Date/Time The correct system time is very important. Wrong system time will directly affect the data logging and power generation value.

  • Page 72: Power Regulation Parameters

    7 iSolarCloud App User Manual AFCI Parameters(Optional) Tap Settings→Operation Parameters→AFCI Parameters to enter the corresponding screen, on which you can set "AFCI Parameters". figure 7-15 AFCI Setting 7.10.3 Power Regulation Parameters Active Power Regulation Tap Settings→Power Regulation Parameters→Active Power Regulation to enter the screen, as shown in the following figure.
  • Page 73 User Manual 7 iSolarCloud App Description Range Parameter Active Power Rising Rising gradient of inverter active power per Gradient minute Active Power Setting Switch for activating/deactivating the function On/Off Persistence of active power setting persistence Active Power Limit Switch for limiting active power On/Off Active Power Limit The ratio of active power limit to rated power in...
  • Page 74 7 iSolarCloud App User Manual • Lagging: the inverter is injecting reactive power into the grid. "Qt" Mode In the Qt mode, the reactive power can be regulated by the parameter Q-Var limits (in %). The system rated reactive power is fixed, the system injects reactive power according to the delivered reactive power ratio.
  • Page 75 User Manual 7 iSolarCloud App figure 7-18 Reactive Power Regulation Curve in Q(P) Mode "Q(U)" Mode The reactive power output of the inverter varies in response to the grid voltage. table 7-8 "Q(U)" Mode Parameter Explanation Explanation Range Parameter Select corresponding curve according to local Q(U) curve A, B, C regulations...

  • Page 76: Communication Parameters

    7 iSolarCloud App User Manual Explanation Range Parameter Value of Q/Sn at point P4 on the Q(U) mode curve (in QU_Q4 0.0 % to 60.0 % Active power for Q(U) function activation (in %) 20.0 %–100.0 % EnterPower Active power for Q(U) function deactivation (in %) 1.0 %–20.0 % ExitPower Yes, No, Yes...
  • Page 77 User Manual 7 iSolarCloud App step 2 Open the App, enter the account and password on the login screen. Tap Login to enter the home screen. step 3 Tap More→Firmware Download to enter corresponding screen on which you can view the device list.

  • Page 78: System Decommissioning

    System Decommissioning 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. step 1 Disconnect the external AC circuit breaker and secure it against reconnection.

  • Page 79: Disposal Of The Inverter

    User Manual 8 System Decommissioning step 1 Refer to "5 Electrical Connection" for the inverter disconnection of all cables in reverse steps. step 2 Dismantle the inverter referring to "4 Mechanical Mounting" in reverse steps. step 3 If necessary, remove the wall-mounting bracket from the wall. step 4 If the inverter will be reinstalled in the future, please refer to "3.2 Inverter Storage"...

  • Page 80: Troubleshooting And Maintenance

    Troubleshooting and Maintenance Troubleshooting Once the inverter fails, the fault information can be displayed on the App interface. If the in- verter is equipped with an LCD screen, the fault information can be viewed on it. The fault codes and troubleshooting methods of all PV inverters are detailed in the table be- low.
  • Page 81 App or the LCD. Modify the overvoltage protection values with the consent of the local electric power operator. 3. Contact Sungrow Customer Service if the preceding causes are ruled out and the fault persists. Generally, the inverter will be reconnected to the grid after the grid returns to normal.
  • Page 82 Grid Underfrequency 2. Check whether the protection parameters are appropriately set via the App or the LCD. 3. Contact Sungrow Customer Service if the preceding causes are ruled out and the fault persists. Generally, the inverter will be reconnected to the grid after the grid returns to normal.
  • Page 83 1. Measure the actual grid, and contact the lo- cal electric power company for solutions if the Grid Abnormal grid parameter exceeds the set range. 2. Contact Sungrow Customer Service if the preceding causes are ruled out and the fault persists. Generally, the inverter will be reconnected to the grid after the grid returns to normal.
  • Page 84 If so, disconnect the DC switch and adjust the polarity when the string current drops below 0.5 A. 2. Contact Sungrow Customer Service if the 532-547, PV Reverse Connection preceding causes are ruled out and the alarm...
  • Page 85 Resistance layer. 3. If the cable is normal and the fault occurs on rainy days, check it again when the weath- er turns fine. 4. Contact Sungrow Customer Service if the preceding causes are ruled out and the fault persists.
  • Page 86 2. Check whether the insulation between the Grounding Cable Fault ground cable and the live wire is normal. 3. Contact Sungrow Customer Service if the preceding causes are ruled out and the fault persists. 1. Disconnect the DC power supply, and...
  • Page 87 2. Reconnect the communication cable of the Inverter Parallel Com- meter. munication Alarm 3. Contact Sungrow Customer Service if the preceding causes are ruled out and the alarm persists. 7, 11, 16, 19–25, 30– 34, 36, 38, 40–42, 44–...
  • Page 88 432–434, abnormalities, and take corresponding correc- 500–513, tive measures when necessary. 515–518, If the fault persists, please contact Sungrow 900, 901, Power Customer Service. 910, 911 1. Check whether the corresponding string is of reverse polarity. If so, disconnect the DC switch and adjust the polarity when the string current drops below 0.5 A.

  • Page 89: Maintenance

    364-395 voltage Fault later to restart the inverter. If the fault still ex- ists, contact Sungrow Customer Service. 1. Check whether the number of PV modules of the corresponding string is less than other strings. If so, disconnect the DC switch and adjust the PV module configuration when the string current drops below 0.5 A.

  • Page 90: Routine Maintenance

    As the inverter contains no component parts that can be maintained, never arbi- trarily replace any internal components. • For any maintenance need, please contact SUNGROW. Otherwise, SUNGROW shall not be held liable for any damage caused. Servicing of the device in accordance with the manual should never be undertak- en in the absence of proper tools, test equipments or the latest revision of the manual which has been clearly and thoroughly understood.

  • Page 91: Appendix

    10 Appendix 10.1 Technical Data Parameter SG2.0RS-S SG2.5RS-S SG3.0RS-S Input (DC) Recommended max. PV in- 3.0 kWp 3.75 kWp 4.5 kWp put power Max. PV input voltage 600 V Min. operating PV voltage / 40 V / 50 V Start-up input voltage...
  • Page 92 10 Appendix User Manual Parameter SG2.0RS-S SG2.5RS-S SG3.0RS-S Max. efficiency / European 97.8 % / 96.9 % 97.8 % / 97.2 % 97.8 % / 97.3 % efficiency Protection Grid monitoring DC reverse polarity protection AC short circuit protection Leakage current protection...
  • Page 93 User Manual 10 Appendix Parameter SG3.0RS SG3.6RS SG4.0RS Input (DC) Recommended max. PV in- 4.5 kWp 5.4 kWp 6 kWp put power Max. PV input voltage 600 V Min. operating PV voltage / 40 V / 50 V Start-up input voltage Rated PV input voltage 360 V MPP voltage range...
  • Page 94 10 Appendix User Manual Parameter SG3.0RS SG3.6RS SG4.0RS AC short circuit protection Leakage current protection Surge Protection DC type II / AC type II DC switch PV string current monitoring Arc fault circuit interrupter Optional (AFCI) PID recovery function General Data Dimensions (W x H x D) 410 mm x 270 mm x 150 mm Weight...
  • Page 95 User Manual 10 Appendix Parameter SG5.0RS SG6.0RS MPP voltage range 40 V – 560 V No. of MPPTs Default No. of PV strings per MPPT Max. PV input current 32 A (16 A / 16 A) 40 A (20 A / 20 A) Max.

  • Page 96: Quality Assurance

    • The customer shall give SUNGROW a reasonable period to repair the faulty device. Exclusion of Liability In the following circumstances, SUNGROW has the right to refuse to honor the quality guarantee: • The free warranty period for the whole machine/components has expired.

  • Page 97: Contact Information

    The fault or damage is caused by installation, repairs, modification, or disassembly per- formed by a service provider or personnel not from SUNGROW. • The fault or damage is caused by the use of non-standard or non-SUNGROW compo- nents or software. •...
  • Page 98 Tokyo Seoul + 81 3 6262 9917 +82 70 7719 1889 service@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 Thailand Co., Ltd.
  • Page 99 User Manual 10 Appendix Vietnam Belgium, Netherlands and Luxembourg (Benelus) Sungrow Vietnam +31 853 018 234 (only for Netherlands) Hanoi service@sungrow-emea.com +84 918 402 140 service@vn.sungrowpower.com Poland +48 221530484 service@sungrow-emea.com...

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