Growatt WIT HU Series User Manual
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Growatt WIT HU Series User Manual

Growatt WIT HU Series User Manual

Hybrid inverter
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WIT 4-15K-HU Hybrid Inverter
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Summary of Contents for Growatt WIT HU Series

  • Page 1 WIT 4-15K-HU Hybrid Inverter User Manual...

  • Page 2: Table Of Contents

    Contents 1 Notes on this manual ..............1 1.1 Introduction ......................1 1.2 Target Group......................1 1.3 Product Range.......................1 2 Safety Precautions..............2 2.1 Safety Instructions ....................2 2.2 Symbol Conventions .................... 4 2.3 Label Description....................5 3 Product Description ..............6 3.1 Overview .......................
  • Page 3 Connection on the AC Side ................32 Connection on the PV Side ................35 Connection on the Battery Side ................ 37 Connecting Communications Cables ............... 39 6.6.1 COM1/COM2 Connection ................6.6.2 COM3/COM4 Connection (Connecting the signal terminals) ...... 43 6.6.3 USB interface ....................46 6.7 Post-installation Checks ...................
  • Page 4 11 Decommissioning the WIT Inverter ........136 12 Warranty ................137 12.1 Conditions ...................... 137 12.2 Disclaimer ...................... 137 13 Contact Us ................138...

  • Page 5: Notes On This Manual

    1.2 Target Group This document is intended for qualified technicians. Only qualified and well- trained technicians are allowed to install and operate the WIT inverter. Should any questions arise during installation, you can visit en.growatt.com to leave a message. 1.3 Product Range WIT 4-15K-HU (AC 380V/400V) inverters offering seven power options: 4kW, 5kW, 6kW, 8kW, 10kW, 12kW, and 15kW.

  • Page 6: Safety Precautions 2

    Safety Precautions 2 2.1 Safety Instructions 1) Please read this manual carefully before installation. Damages caused by failure to follow the instructions in the manual are beyond the warranty scope. 2) Only qualified and trained electrical technicians are allowed to perform operations on the WIT Inverter.
  • Page 7 Electrical Connections: Before connecting cables, ensure that the DC switches of the Ÿ WIT Inverter are OFF, and turn off the switch and breaker on the AC side and the battery side. Otherwise, high voltages may cause severe injuries. It must be operated by qualified and trained electrical Ÿ...

  • Page 8: Symbol Conventions

    Others: Upon receiving the product, check if the contents are intact and Ÿ complete. If any damage is found or any component is missing, please contact your distributor. The maximum PV input voltage cannot exceed 1000V. The Ÿ battery input voltage cannot exceed 60V. For the WIT Inverter that will not be put into operation in the Ÿ...

  • Page 9: Label Description

    2.3 Label Description Symbol Name Meaning High voltages exist after the WIT Inverter is powered on. Only qualified and trained High voltage electrical technicians are allowed to perform operations. Do not touch a running inverter because it Burn warning generates high temperatures on the shell. Indicates the position for connecting the PE Grounding cable.

  • Page 10: Product Description 3

    Product Description 3 The following figure shows the appearance of the WIT 8-15K-HU. The WIT 4-6K-HU has only one MPPT tracker compared to the WIT8-15K-HU, so there is a slight difference in the PV port at the NOTICE bottom. 3.1 Overview Front view: R S T R S T...

  • Page 11: Battery Switch Status Description

    Left view: Right view: Fig 3.3 Left view Fig 3.4 Right view Table 3.1 Component description descriptions descriptions Top cover plate Display screen Bottom cover plate Network Port Terminal Signal terminal Battery Terminal Blocks Load wiring terminal Power grid connection terminal Power grid connection terminal PE wiring terminal PV terminal...

  • Page 12: Basic Data

    NOTE: 1. Before using the battery to wake up The WIT, make sure the battery button is turned on. 2. Regardless of whether the battery is connected, the battery button should be turned on when The WIT is operating in any mode. Fig 3.5 Battery Switch-On Fig 3.6 Battery Switch-Off 3.3 Basic Data...
  • Page 13 unit：mm Fig 3.7 Inverter Dimensions unit：mm Fig 3.8 Package Dimensions...

  • Page 14: Nameplate

    3.4 Nameplate The figure below shows the nameplate of WIT 15K-HU as an example. The nameplate figure is for reference only. The actual nameplate prevails. For the specifications, please refer to Section 10 Product Specifications. Hybrid Inverter WIT 15K-HU 1000 150-850 Grid Data 30/15 kW...

  • Page 15: Wit 4-15K-Hu Operating Principles

    3.5 WIT 4-15K-HU Operating Principles 1) The hybrid inverter receives DC inputs from PV strings which go through the MPPT routes. The DC power is then converted into AC power through the inverter circuit to power the loads and feed power into the grid; 2) The PV strings can supply power to charge the battery through the MPPT routes;...

  • Page 16: Storing The Wit Inverter

    3.6 Storing the WIT Inverter 1> Put the WIT Inverter in the original package and place it in a dry and well- ventilated place. 2> Keep the storage temperature from –40°C to +70°C and the humidity from 0%– 95% RH. 3> A maximum of three WIT Inverters can be stacked. Do not stack the inverters without package.

  • Page 17: Clearing The Alarm

    NOTE: 1. The AFCI Function of the WIT Inverter is disabled by default. If you want to enable the AFCI, please contact Growatt support. 2. Do not connect the Maximum Power Point Trackers (MPPTs) on the DC side in parallel as it might trigger the AFCI mistakenly.

  • Page 18: Anti-Pid Function

    The Anti-PID function integrated in Growatt inverters can effectively reverse the PID effect by applying DC voltage to the PV modules during nighttime, enhancing solar energy harvest and...

  • Page 19: Inspection Upon Delivery

    4 Inspection upon delivery Unpacking and inspection 1> Before unpacking the WIT Inverter, check the shipping box for any externally visible damage. If any damage is found, contact the shipping company as soon as possible. 2> After unpacking the WIT Inverter, check if the scope off delivery is intact and complete.
  • Page 20 Table 4.1 Packing list Description Quantity Description Quantity AC Side Rail Crimp The WIT Inverter Terminals Wall mount kit RNB8-4S Terminal PV+(-) connector CT (100A/40mA) External lead-acid PV+(-) metal contact battery NTC cable Battery terminal SC50- Plug/2-Φ12 8/SC120-8 PV connector SC4-6 terminal disconnect tool M8*16 screw...

  • Page 21: Installation

    5 Installation 5.1 Basic Installation Requirements A. The installation location must be suitable for WIT's weight for a long period time. (Refer to Table 3.2 for the weight of the WIT Inverter). B. Ensure that the installation position is suitable for the dimensions of the WIT Inverter.

  • Page 22: Installation Environment Requirements

    J. Keep the WIT Inverter away from strong interference sources. K. Ensure that the WIT Inverter is not accessible to children. 5.2 Installation Environment Requirements A. Though the WIT Inverter is protected to IP66, do not expose it to direct sunlight, rain and snow.

  • Page 23: Moving The Wit Inverter

    ≥400mm ≥400mm Fig 5.5 D. Do not place the WIT Inverter in an enclosed and narrow space for operation. Fig 5.6 5.3 Moving the WIT Inverter Ÿ The inverter is heavy, please move it with care and keep balance to avoid personnel injury. Ÿ...

  • Page 24: Wall Mount Bracket Installation

    1>As shown in Fig 5.7, two persons are required to lift the inverter out of the package and transport it to the installation position. 2>When you are moving the inverter, please keep the balance. Note: There will be front and bottom mark on the package. Fig 5.7 5.4 Wall Mount Bracket Installation Before installing the inverter, you need install the wall mount bracket so that the...

  • Page 25: Installing The Inverter

    STEP 1: Use the wall mount plate as a template, drill holes into the wall and insert the expansion bolts as Fig 5.9 show. STEP 2: Tighten the bolts to attach the wall mount bracket onto the wall securely as illustrated below. 1.Draw a line 2.Drill：Depth 70mm 、Diameter φ12mm 3.Install the expansion screws...
  • Page 26 Screw Torque 50Kgf.cm 2.Stationary machine 1.Install the machine Fig 5.10 Wall-mounted installation Ensure that the wall meets the load-bearing requirements of the equipment. For details about the weight, see Table 3.2. NOTICE...

  • Page 27: Electrical Connections

    6 Electrical Connection Fig 6.1 Wiring diagram of the system with a single WIT 15K-HU inverter (Gen mode) NOTE: 1.Connect the signal wires of the generator and the meter to the relevant positions of the CN10 terminal according to Table 6.6. 2.
  • Page 28 Fig 6.2 Wiring diagram of the system with a single WIT 15K-HU inverter and two meters (AC couple mode) NOTE: Connect the signal wires of the meter to the relevant positions of the CN10 terminal according to Table 6.6. Proform related Settings on the client. Take ShinePhone as an example: Tap Control >...
  • Page 29 Fig 6.3 Wiring diagram of the system with single WIT 15K-HU inverters in smart load mode NOTE: 1. Connect the signal wires of the meter to the relevant positions of the CN10 terminal according to Table 6.6. 2. Proform related Settings on the client. Take ShinePhone as an example: Tap Control >...
  • Page 30 Grid Grid PV 1 Load Secondary Load PV 2 P1:Grid side P2:PCS side BMS1 Bypass Breaker Breaker RS485 Grid PV 1 Load Breaker PV 2 Load Breaker BMS1 Primary Load Grid PV 1 Load PV 2 BMS1 Fig 6.4 Wiring diagram of the system with three WIT 15K-HU inverters connected in parallel NOTE: 1.
  • Page 31 WIT 4-15K-HU LOAD GRID Grid N BAR Primary Load E BAR (a) AU/NZ area wiring WIT 4-15K-HU LOAD GRID Grid Primary Load E BAR (b) Other area wiring Fig 6.5 N-PE Wiring in Different Areas...
  • Page 32 Fig 6.6 Communication network port Detailed information...
  • Page 33 REPO.WIT CT_T- (Black) CT_T+ (White) DG_START+ CT_S-(Black) DG_START- CT_S+ (White) NTC.BAT1 OUT CT_R- (Black) CT_R+ (White) Fig 6.7 Signal termianal...

  • Page 34: Shell Connecting The Ground Cables

    6.1 Shell Connecting The Ground Cables 1) It is essential to connect the ground cable to the WIT inverter before connecting other cables to prevent personal injury or device damage. 2) All non-current-carrying metal parts and the enclosures of the devices of the energy storage system, including the rack and the enclosures of the combing box, the distribution panel, the inverter and the battery should be properly grounded.

  • Page 35: Internal Connecting The Ground Cables

    6.2 Internal Connecting The Ground Cables Ÿ Before connecting cables, ensure that the DC switches on the WIT Inverter are OFF. Turn off the switches and breakers on the GRID side, GEN side and the battery side. Otherwise, the high voltages of the WIT Inverter may result in electric shocks.

  • Page 36: Connection On The Ac Side

    2) Connect a ground cable to the copper grounding bar. Fig 6.10 shows the position of the grounding bar inside the right cover plate; R S T R S T R S T unit: mm Tubular terminals Fig 6.10 Grounding Schematic 6.3 Connection on the AC Side Ÿ...
  • Page 37 Preparation: 1> Ensure the grid voltage and the grid frequency are within the acceptable range; 2> Disconnect the DC switches and the AC breakers on the grid side, generator side and the battery side. The circuit breaker on the AC side: AC circuit breaker needs to be installed on the grid side, ensuring a safe disconnection between the WIT Inverter and the upstream input when an exception occurs.
  • Page 38 2. Cold-pressed terminals are delivered with the package. Select terminals based on the cable specifications; Ÿ Any device damage caused by failure to seal the output terminal gaps as instructed is beyond the scope of warranty and Growatt shall not be liable for the damage. WARNING...

  • Page 39: Connection On The Pv Side

    Ensure that the following conditions are met; Otherwise, fire Ÿ WARNING hazard or inverter damage may occur. Growatt is not liable for the consequence and it is beyond the warranty scope. NOTE: 1. When exposed to sunlight, PV modules will generate voltage. High voltages presented in the PV strings connected in series could be fatal.
  • Page 40 Ensure secure connection by tightening the locking nut. Fig 6.13 PV Terminal Procedure for connecting cables on the PV side: 1. Strip 6-8 mm of the insulation layer of the PV cables; 2. Insert the exposed core wires into the crimping area of the wiring terminal and crimp them using a crimping plier;...

  • Page 41: Connection On The Battery Side

    6.5 Connection on the Battery Side Before connecting cables, ensure that the DC switches of the Ÿ WIT Inverter are OFF, and turn off the breakers on the AC side and the battery side. Otherwise, the high voltages of the WIT Inverter may cause electric shocks.
  • Page 42 Procedure for connecting the main battery power: 1. Strip the insulation layer of the DC cable, Select an appropriate cable stripping length based on the OT terminal。 2. Use crimping pliers to crimp the battery cable on the battery terminal, and then cover the heat shrink tube for insulation protection;...

  • Page 43: Connecting Communications Cables

    6.6 Connecting Communications Cables 6.6.1 COM1/COM2 Connection WIT 4-15K-HU Inverter includes 8 RJ45 ports. It is used for parallel connection via PARA-IN and PARA-OUT communication terminals, battery communication via BMS1 terminals, and external equipment communication via RS485 and DRMS function Connect the communication cables to the corresponding terminals as required.
  • Page 44 3> Connect the communication cable terminals according to the single board silkscreen as shown in Fig 6.17. 4> Tighten the PG head after connecting. Detailed information of COM1 CN1/BMS-1 CN2/BMS-2 CN3/RS485-1 CN4/RS485-2 R S T CN5/METER CN6/DI CN7/PARA_IN CN8/PARA_OUT R S T 1 2 3 4 5 6 7 8 9 10 11 12 13 14 CN3/RS485-1 CN4/RS485-2...
  • Page 45 Table 6.5 Communication network port terminal description Definition of battery communication terminal Silk screen Definition of signal Function and Note BAT RS485_B BAT RS485_A BAT1 DI_1 BAT1 CAN_H Communication of battery1 BMS1 (mandatory) BAT1 CAN_L BAT1 DI_2 BAT1 WAKE- BAT1 WAKE+ BMS2 Disabled RS485_1B...
  • Page 46 Definition of battery communication terminal Silk screen Definition of signal Function and Note RS485_1B GND.S RS485-1: CT/ShineBus/ RS485_1B RS485-2 ShineMaster (1/4/5) RS485_1A RS485-3: EMS/VPP (7/8) RS485_3B RS485_3A RS485_2B GND.S RS485_2: METER1 output (export limitation meter METER wiring port for a single RS485_2A inverter) DRM1/5...

  • Page 47: Com3/Com4 Connection (Connecting The Signal Terminals)

    Definition of battery communication terminal Silk screen Definition of signal Function and Note GND.S Sc_A/H PL_CANH PARA-IN Parallel input PL_CANL Sc_B/L GND.S Master_CAN GND.S Sc_A/H PL_CANH PARA-OUT Parallel output PL_CANL Sc_B/L Slave_CAN GND.S 6.6.2 COM3/COM4 Connection (Connecting the signal terminals) This terminals is used for oiler start/stop, machine emergency stop, battery temperature rise and external CT access signals.
  • Page 48 unit:mm 25±2 10±2 Fig 6.18 Signal terminal connections 4) Install the Bottom cover plate after completing all the above steps. Torque:50Kgf.cm Fig 6.19 Install the Bottom cover plate...
  • Page 49 Detailed information: CN1/BMS-1 CN2/BMS-2 CN3/RS485-1 CN4/RS485-2 R S T R S T CN5/METER CN6/DI CN7/PARA_IN CN8/PARA_OUT R S T 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Fig 6.20 Signal Terminal Signal Terminal Interface Definition Description silkscreen...

  • Page 50: Usb Interface

    6.6.3 USB connection The WIT-XHU series inverter is equipped with a USB interface as standard, which can be connected to a USB to WiLAN-X2 monitoring module for remote monitoring. In addition, you can also quickly upgrade the inverter software through the U disk. Steps to install the monitoring module: 1>...
  • Page 51 Position Item Check item Check the cable specifications; ensure Ground cable on the that the cable has been securely battery side fastened Battery side Check the cable specifications; ensure BAT+, BAT- that the cable has been securely fastened Check the cable specifications; ensure Ground cable on the that the cable has been securely AC side...

  • Page 52: Commissioning 7

    Shinephone APP as an example，When the inverter is powered in, you can set inverter time and date referring to Section 8.1.1.Tap Control > Set Inverter Time, then enter the password "growatt+date".For instance, if the date is Feb. 28, 2024, the password would be "growatt20240228".

  • Page 53: Mode Of Operation

    7.1.2.2 Set the Date & Time Automatically Connect the WIT Inverter to the server following the procedure specified in Section 8.1.2 when the inverter is powered on, then the WIT Inverter will update its date and time automatically. 7.2 Mode of operation 7.2.1 Waiting Mode When the PV voltage is greater than 150V, the WIT Inverter will be powered on and enters the waiting mode.

  • Page 54: Operating Mode

    7.2.2 Operating Mode 7.2.2.1 Operating Mode of WIT 4-15K-HU Load First: In Load First mode, the WIT inverter prioritizes supplying the solar power and battery energy to the loads. If Export Limitation is disabled, the surplus solar power can be fed to the grid, but the battery energy will not be exported to the grid;...
  • Page 55 Secondary Load Grid Meter Primary Load Zero export to GRID: In this mode, there is no output at the inverter's GRID port. The solar and battery power can only by supplied to Primary Loads via the LOAD port. The meter is not required.
  • Page 56 7.2.2.2 System Operating Strategies of WIT 4-15K-HU TOU (Time of use): Configure the system to work in the preset mode during different time segments based on the peak-valley periods and electricity price. Setting items include: the operating mode, enable/disable AC Charging function (charge from grid). During the time not specifically configured, it will operate according to the system settings.
  • Page 57 Grid Peak Shaving: Set the forward power flow threshold A: once the load power on the external meter is greater than this value, the inverter will reduce charging power and boost power out until it reaches the maximum operating power of the WIT inverter. Set the reverse power flow threshold B: once the grid feed-in power on the external meter is greater than this value, the inverter will reduce output power and boost charging power until it reaches the maximum operating power of the WIT inverter.
  • Page 58 Micro-grid (PV-ESS-DG Power System): A generator is connected to the GEN port: If the grid power is normal, the WIT inverter will work in the grid-tied mode: 1. If the power generated by the grid-tied inverter is sufficient to support the loads, the surplus power will be used to charge the battery;...

  • Page 59: Fault Mode

    7.2.3 Fault Mode The intelligent control system of the WIT Inverter monitors and adjusts the system status in real time. When the WIT Inverter detects an alarm, the corresponding status light will turn red and the OLED will display the alarm. When the WIT Inverter detects a fault, the system status indicator and the corresponding status light will turn red and the OLED will display the fault.

  • Page 60: Led And Oled Display Panel

    7.3 LED and OLED Displays Panel The LED and OLED display panel demonstrating the running status of the WIT Inverter is shown in the Fig 7.6. The symbol description is shown in Table 7.1; The user interfaces are shown in Fig 7.7, and the LED indicator description is shown in Table 7.2.
  • Page 61 Output Power ROWATT 12.3 startup page display page AFCI Fault Programming update page alarm page Fig 7.2 User interfaces Table 7.2 Indicator description Status Meaning The system is not operating Steady green The system is operating properly Blinking green at long The system is in standby mode or intervals performing an upgrade...
  • Page 62 Status Meaning Off-grid mode is disabled Off-grid mode is enabled and has no Steady green faults or alarms Off-grid mode is enabled and a fault Steady red or alarm is reported on the AC side Battery voltage is below the operating voltage The SOCs connected to the battery Steady green...

  • Page 63: Monitoring

    8 Monitoring 8.1 Remote Monitoring Growatt WIT 4-15K-HU Hybrid inverters support Bluetooth/remote monitoring, which can be enabled by installing a datalogger. For more information on operation and configuration methods, see the following link. Compatible Installation & Operation Guide Linkage Datalogger...
  • Page 64 2.Tap “ShineWiLan-X2”, View connection guide, as the fig shows.
  • Page 65 3. After confirming that the Bluetooth of the Datalogger is enabled, scan the two- dimensional code of the Datalogger for connection, as the figure shows.
  • Page 66 4. tap "Connect" after the target Bluetooth device is displayed. After successful connection, the screen is shown in the figure. 5.When the device is successfully connected, tap the Device you want to check in the Device List to view the relevant status information and set relevant parameters as required.
  • Page 67 Tap Quick Setting, set time, language, etc., as the figure shows.
  • Page 68 Tap System Configuration, you can turn on/off the inverter, set the percentage of active power, etc., as the figure shows. Tap on the Basic Settings, you can set the baud rate, view the network communication protocol version, as the figure shows.
  • Page 69 Tap Grid Code, you can set power factor related parameters, Frequency/Watt, etc., as the figure shows. Tap EMS, you can set the use time, AC charging enable and other related information.as the figure shows.
  • Page 70 Tap Peak Shaving to Enable/disable Demand management Enable and set Demand Mange Charge Power Limit as the figure shows. Tap Device Information, and then select the section you want to know, you can view the relevant content on the screen, as the figure shows.

  • Page 71: Remote Monitoring On The App (Shinephone)

    8.1.2 Remote Monitoring on the APP (ShinePhone) NOTE: (1) Download and install the latest version of ShinePhone. (2) See https://server.growatt.com/?lang=en for details. (3) Shinephone and Server accounts are universal. Account Registration on ShinePhone Run the APP and tap “Register” on the login page. Fill in the information as required.
  • Page 72 Add Plant After logging in to ShinePhone, tap on "Plant" and follow the steps shown, Fill in the information as required. Fields marked with * are mandatory. Connect the Datalogger to the network on shinephone Perform operations according to the steps shown in the figure. Note that the Bluetooth of the Datalogger must be enabled, that is, the blue light of the Datalogger is on.
  • Page 73 Home Screen of ShinePhone 1.Dashboard: displays the critical information of all power plants under the account, such as the total yield, the total revenue and the status of the device. Please refer to the figures below:...
  • Page 74 2. Plant: displays the plant list and the basic information about each PV plant, as shown in the figure below. You can select your target plant to view detailed information. Detail Page of the WIT Inverter: To access details about the WIT Inverter or related devices: (1) Tap “Plant”...
  • Page 75 (4) On the “Events” screen, you can view the fault/warning message and suggested trouble-shooting measures.
  • Page 76 (5) On the “Control” screen, you can configure the WIT Inverter. The password is in the format of “growatt + the current date”, e.g. growatt20240228. Set lower frequency limit Ø Tap Control >Safety parameter setting >UV1/UV2/UV3 Frequency; You can set...
  • Page 77 Ø Set frequency Upper limits Tap Control > Safety parameter setting >OV1/OV2/OV3 Frequency; You can set the upper frequency limit of The WIT. Ø Set lower voltage limit Tap Control >Safety parameter setting>UV1/UV2/UV3 Voltage; You can set the lower voltage limit of The WIT.
  • Page 78 Set upper voltage limit Ø Tap control >Safety parameter setting >OV1/OV2/OV3 Voltage; You can set the upper voltage limit of The WIT. Grid related settings Ø Tap Control >Safety parameter setting> Grid related settings, you can set the voltage Over/lower threshold of grid connection and the frequency Over/lower threshold of grid connection, as the figure shows.
  • Page 79 Ø Loading, restarting, and unloading rates Tap Control > Safety parameter setting > Loading, restarting, and unloading rates; you can set Loading, restarting, and unloading rates. Ø Settings related to OF derating Tap Control > Safety parameter setting > Loading, restarting, and unloading rates;...
  • Page 80 Ø Settings related to UF increasing Tap Control > Safety parameter setting > Loading, restarting, and unloading rates; You can set UF derating. Ø Grid Reconn Wait Time Tap Control > Safety parameter setting > Grid Reconn Wait Time; You can set Grid Reconn Wait Time.
  • Page 81 Ø Frequency change rate enable Tap Control > Safety parameter setting > Frequency change rate enable; can set Frequency change rate enable. Ø Set Inverter On/Off Tap Control > General settings > Set Inverter On/Off; you can power on/off the inverter, as the figure shows.
  • Page 82 Ø Set the Time of the Inverter Tap Control > General settings > Setting Time; you can set the local time, as the figure shows. Ø System Mode Tap Control > General settings > System Mode; you can set the System Mode, as the figure shows.
  • Page 83 Set Reactive Power Ø Tap Control>General settings> Set reactive power. You can set different reactive power modes; as the figure shows. Enable the grid side electricity meter Ø Tap Control > General settings > Enable the grid side electricity meter, you can Enable/Disable grid side electricity meter.
  • Page 84 Ø Settings related to AC charging Tap Control > General settings > Settings related to AC charging, You can set the parameters related to AC charging. Set the Battery Enable Ø Tap Control > Battery Setting > BMS1/BMS2/BMS3 Enabled, you can enable/disable Battery_1, Battery_2 and Battery_3, as the figure shows.
  • Page 85 Set the Battery Ø Tap Control > Battery Setting > Battery 1 related settings, you can set the Battery related parameters (the battery capacity, ranging from 0 to 290Ah; the maximum charging/discharging power, ranging from 0 to 15kw; the maximum charging/discharging current, ranging from 0 to 200A;...
  • Page 87 Set the Off grid related settings Ø Tap Control > Off grid parameter settings > Off grid Related Setting, you can enable/disable the off-grid mode, set the off-grid frequency (50Hz/60Hz) and the off-grid voltage (220V/230V/ 240V/277V/127V), complying with the safety regulations.as the figure shows.
  • Page 88 Single machine anti backflow setting Ø Tap Control > Single machine anti backflow setting > Single machine anti backflow related settings, You can Enable/Disable the Single machine anti backflow function. Set the Single phase Export Limitation Ø Tap Control > Single machine anti backflow setting > Single phase anti backflow enable, you can enable/disable the Single phase anti backflow function, as the figure shows.
  • Page 89 Set the Maximum spontaneous self use Ø Tap Control > Advanced > Maximum spontaneous self use, you can enable/disable the Maximum spontaneous self use function, as the figure shows. Equipment mode selection and time setting Ø Tap Control > Advanced> Equipment mode selection and time setting; 6 time segments are configurable.
  • Page 90 Demand Management/Peak Shaving Ø Tap Control > Advanced > Demand Management/Peak Shaving, you can enable/disable the Demand Management Enablement Function、Peak Shaving Backup SOC Enable Function and setting PeakinShaving Backup SOC, as the figure shows. Microgrid system Ø Tap Control > Advanced > Microgrid system, you can select Types of Access for GEN Port Devices，include“Generator”、“PV inverter”and “Smart Load”;...
  • Page 92 Safety function control Ø Tap Control > Advanced > Safety function control, you can Enable/Disable Low voltage crossing etc.
  • Page 93 Parallel parameter setting Ø Tap Control > Advanced > Parallel parameter setting, you can Enable/Disable Parallel parameter setting. (6) On the “Edit” screen, you can change the device name as the figure shows.
  • Page 94 "My device list", "My room" and "My scene 4.Service: includes the common faults and troubleshooting suggestions, as shown in the figure below. Should you encounter any problem about our product, you can contact the Growatt after-sales support or refer to the related documents...

  • Page 95: Remote Monitoring On The Shineserver Webpage

    8.1.3 Remote Monitoring on the ShineServer Webpage 1. Open the browser, then enter https://server.growatt.com/login?lang=en in the address box to access the login page. Click “Register an Account” if you do not have an account.
  • Page 96 2. After the Registration Page is displayed, fill in the information as required and click to agree to the Privacy Policy. Fields marked with the “·” icon are mandatory. Click next, it will bring you to the “Add Plant” page. Then click “Back to Login”...
  • Page 97 3. On the Login screen, enter the username and the password to log in to the home screen. 4. After accessing the home screen, the “Add Plant” window will pop up. Fill in the information as required (marked with “·”) and click “Yes”. If the plant has been created, you can select the target plant on the home screen.
  • Page 98 5. Click the target plant and the detailed page will be displayed, click “Add Data Logger” on the upper right corner to add the datalogger connected to the inverter. 1)Enter the serial number (SN) of the datalogger. 2)Select the target power plant. You might need to enter the verification code of the datalogger as prompted.
  • Page 99 6. After adding the datalogger successfully, you can click Dashboard to view details about related devices. Dashboard: 1. Running status and energy display 1) Plant List: select the target plant from the drop-down list 2) Device Type: Select the device from the drop-down list 3) Input/Search Number: Upon the initial search, enter the serial number of the specific device;...
  • Page 100 2. Energy Trend 1) System Production: displays the power for self-consumption and the power exported to the grid 2) Date: select a specific date, you can view the energy data in a specific period, day, month or year 3) Load Consumption: displays the power for self-consumption and the power drawn from the grid 4) Display options: to show/hide the content by clicking the corresponding color circle.
  • Page 101 4. My PV devices This section displays all devices involved in the selected PV plant (online devices are shown first, followed by offline devices). Energy 1. Parameter comparison 1) Device type: Select the device type for comparison, such as the WIT inverter or the meter.
  • Page 102 On the Log page, you can view the error code and the fault description. Setting 1. Account management 1) Modify your account information 2) Change the password: you can change the password on this page 2. Download A range of documents are available for download.
  • Page 103 Device 1. Datalogger 1) Serial number: each datalogger has a specific SN, which can be used to search for the device; 2) User name and the PV plant to which the datalogger is connected; 3) Connection status: connected or disconnected; 4) Data update interval;...
  • Page 104 1) Enter the serial number to find the device; 2) Device model; 3) User name and the PV plant to which the device is coinnected; 4) Daily and monthly energy yield; 5) Serial number of the selected device; 6) Operating status: operating, standby, disconnectedor faulty; 7) Serial number of the datalogger connected to thedevice;...
  • Page 106 10.2) High grid voltage limit (voltage upper threshold of grid connection). 10.3) Low grid voltage limit (voltage lower threshold of grid connection).
  • Page 107 10.4) High grid frequency limit (frequency upper threshold of grid connection) . 10.5) Low grid frequency limit (frequency lower threshold of grid connection).
  • Page 108 10.6) Load, restart load, and down load rate settings. 10.7) Setting the start point of overfrequency load shedding: Load shedding after higher than the set frequency.
  • Page 109 10.8) Set underfrequency loading enable: you can set whether to allow the underfrequency loading function to be enabled. 10.9) Set the frequency rate of change enable.
  • Page 110 10.10) Powering on/off the device: you can power on/off the device remotely. 10.11) Set the time: you can set the time for the device.
  • Page 111 10.12) Setting the default working mode of the system: selecting the working mode according to the customer's needs, the working modes are Load Priority, Battery Priority, Grid Priority, Pure PV Energy Storage, Idle Grid Priority for Energy Storage, PTO, Grid Priority (ECO). 10.13) Setting the reactive power: The corresponding PF mode can be set.
  • Page 112 10.14) Setting the network side meter enable: you can choose whether to enable the network side meter function or not. 10.15) AC charging: you can set whether to enable the mains charging function or not.
  • Page 113 10.16) AC charge power: you can set the AC charge power. 10.17) AC discharging power: you can set the AC discharge power.
  • Page 114 10.18) AC stop charging SOC: the battery charge cut-off SOC can be set (100 recommended). 10.19) Discharge stop SOC: you can set the battery discharge cut-off SOC (recommended 10), the discharge cut-off SOC is divided into grid- connected discharge stop SOC and off-grid discharge stop SOC.
  • Page 115 10.20) Enable Battery: You can choose to enable or disable battery. 10.21) Battery Settings: Battery related parameters can be set, including battery capacity, maximum charging/ discharging power, maximum charging/ discharging current, maximum battery charging voltage, battery charging cut-off voltage, battery discharging cut-off voltage, off-grid cut-off voltage.
  • Page 116 10.22) Mode switching: You can choose to switch the operating mode manually or automatically. In general, it is recommended that you select the "Auto" mode switch. 10.23) Setting off-grid enable: you can set whether or not the inverter operates in off-grid mode.
  • Page 117 10.24) Off-grid voltage: 220V/230V can be set. 10.25) Off-grid frequency: two options: 50Hz/60Hz.
  • Page 118 10.26) Anti-reverse flow settings: You can enable/disable the anti-reverse flow feature in accordance with applicable local regulations and set the anti- reverse flow power when the feature is enabled. 10.27) Set Parallel Enable: you can set whether to enable the parallel function or not.
  • Page 119 10.28) Setting the working mode and time period 10.29) Disable/Enable Demand Management/Peak Shaving...
  • Page 120 10.30) GEN port access device type: can be set as generator/PV inverter/smart load. 10.31) Generator Enable: Option to enable or disable the GEN.
  • Page 121 10.32) Tanker power: Tanker power can be set. 10.33) Enable/Disable Electricity Meter 2...
  • Page 122 10.34) AC Couple Enable: you can set whether to enable the AC Couple function. Wattmeter Enter the serial number of the meter or Datalogger to search for the desired meter Once the search is complete, the type of meter, the model of the Datalogger working with the device, the status of the meter, and the serial number of the WIT inverter to which the meter is connected are displayed.

  • Page 123: System Maintenance

    9 System Maintenance 9.1 Routine Maintenance 9.1.1 Clean the Chassis Ÿ Before performing any operation, disconnect the AC and DDC power supply and wait for 5 minutes after the system is powered off. Ÿ Wipe the dust off the chassis and clean the chassis witth a DANGER moistened cloth.
  • Page 124 Fig 9.1 Fig 9.2 Position of the fan fixing plate 3> Disconnect the fan connector, remove the fan fixirng plate with a screwdriver, and remove the fan. 4> Clean the fan cover, fan blades, and the heat sink, or replace the fan. (1) Use an air pump to clean the heat sink, and use a bru:sh or wet cloth to clean the fan and the its cover;...

  • Page 125: Troubleshooting

    1. Power off the system and check the AC SPD function AC SPD Warning fuse. abnormal 2. If the fault persists, contact Growatt. 1. Power off the system and check the Warning 208 DC fuse blows fuse. 2. If the fault persists, contact Growatt.
  • Page 126 2. If the DC voltage is within the threshold specified range and the error message persists, contact Growatt support. 1. Check the polarity of the PV terminals. PV string is reversely PV Reversed 2. If the error message persists, contact connected Growatt support.
  • Page 127 1. Check if the L line and the N line of the Meter is reversely meter are reversely connected. Warning 309 connected 2. If the error message persists, contact Growatt support. The voltage 1. Check if the PE cable is reliably difference between connected after shutdown. Warning 310 the N line and the PE 2.
  • Page 128 2. Check if the PV voltage is within the connection are not specified range. 3. Restart the inverter. If the error message persists, contact Growatt support. The inverter failed to 1. Check if the battery is turned on. Warning 500 communicate with 2.
  • Page 129 Battery temperature the battery is within the specified range. Warning 506 is out of range 2. If the error message persists, contact Growatt support. 1. Figure out the cause according to the BMS reported a fault; Warning 507 BMS error code.

  • Page 130: Error

    The error code indicates that the device is damaged or the configurations are abnormal. Only qualified and trained electrical technicians are allowed to rectify the faults. The error message will disappear after the fault is rectified. If the problem persists, please contact Growatt. Table 9.2 Error codes Error Code...
  • Page 131 PV panels have low grounded. PV Isolation Low insulation 2. If the error message persists, please resistance contact Growatt support. 1. After shutdown, check if the PV string is reversely connected to the inverter. PV string reversely PV Reversed 2. Restart the inverter.
  • Page 132 Growatt support. 1. Restart the inverter. Bus voltage Error 404 2. If the error message persists, please sampling abnormal contact Growatt support. 1. Restart the inverter. Error 405 Relay fault 2. If the error message persists, please contact Growatt support.
  • Page 133 Description Suggestion 1. Restart the inverter. Communication Error 417 2. If the error message persists, please protocol mismatch contact Growatt support. DSP and COM 1. Restart the inverter. Error 418 firmware version 2. If the error message persists, please mismatch contact Growatt support.
  • Page 134 2. Check if the battery is in the sleep mode. the inverter 3. If the error message persists, please contact Growatt support. 1. Figure out the fault based on the BMS The BMS reports that error code. Error 501 the battery failed to 2.
  • Page 135 BAT Charge OCP 1. Check if the PV voltage is oversized. Error 509 (Overcurrent 2. If the error message persists, please Protection) contact Growatt support. 1. Check if the battery discharge BAT Discharge OCP current configuration is proper. Error 510 (Overcurrent 2.

  • Page 136: Product Specifications 10

    Product Specifications 10 Table 10.1 WIT 4/5/6/8/10/12/15K-HU Specifications Model 4K-HU 5K-HU 6K-HU 8K-HU 10K-HU 12K-HU 15K-HU Specifications Input data(PV) Max. recommended PV power(for 6.4kW 9.6kW 12.8kW 16kW 19.2kW 24kW module STC) Max. DC voltage 1000V Start voltage 180V Nominal voltage 600V MPP voltage range 150V-850V...
  • Page 137 Model 4K-HU 5K-HU 6K-HU 8K-HU 10K-HU 12K-HU 15K-HU Specifications Nominal AC 220V/230V L-N, 380V/400V L-L, -15% ~ 10% voltage/range Nominal AC grid 45~55 Hz/55~65 Hz frequency/range 50.1A/ 40A/ 13.4A/ 16.7A/ 20.0A/ 26.6A/ 33.3A/ Max. input/output 20A@ 6.7A@ 8.4A@ 10.0A@ 13.3A@ 16.7A@ current 220V...
  • Page 138 Model 4K-HU 5K-HU 6K-HU 8K-HU 10K-HU 12K-HU 15K-HU Specifications Overload 2x rated power, 10 S Capability THDv <3%（Linear full load） Switch time ≤10ms Efficiency Max. efficiency 97.60% European 97.00% efficiency MPPT efficiency 99.90 % Protection devices DC reverse polarity adjuvant protection Battery reverse adjuvant...
  • Page 139 Model 4K-HU 5K-HU 6K-HU 8K-HU 10K-HU 12K-HU 15K-HU Specifications Noise emission ≤50dB (typical) Altitude 3000m Topology Transformerless Cooling Smart air cooling Protection degree IP66 Relative humidity 0~95% PV connection AC connection Cable glands +terminals Battery connection OT terminal Interfaces Display OLED+LED/APP RS485/CAN/USB RS485/CAN/USB...
  • Page 140 Handle the WIT Inverter that will not be operated in the future properly. 1> Disconnect the external AC circuit breaker and prevent accidental reconnection due to improper operation. 2> Set the DC switches to the OFF position. 3> Disconnect the battery side switch. 4>...
  • Page 141 Growatt guarantees maintenance and replacement of the defective product under warranty. 1. Growatt will ask users to provide product information by filling a form before making warranty repairs, including the date of purchase and installation, the erial number of the WIT Inverter, fault description and other information.
  • Page 142 If you have technical problems with our products, please contact Growatt for technical support. To provide you with the necessary assistance, please have the following information ready: 1. Model number of the WIT Inverter 2. Serial number of the WIT Inverte 3.
  • Page 143 Download Manual Shenzhen Growatt New Energy Co., Ltd. 4-13/F, Building A, Sino-German (Europe) Industrial Park, Hangcheng Blvd, Bao'an District, Shenzhen, China service@growatt.com en.growatt.com For local customer support, please visit https://en.growatt.com/support/contact GR-UM-476-A-00 (PN: 044.0140400)

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