Growatt WIT 50K-A User Manual
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Growatt WIT 50K-A User Manual

Storage/hybrid inverter
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Shenzhen Growatt New Energy Co., Ltd
4-13/F, Building A, Sino-German (Europe) Industrial Park,
Hangcheng Ave, Bao'an District, Shenzhen, China
T
+86 755 2747 1942
E
service@ginverter.com
W
www.ginverter.com
GR-UM-299-A-02
WIT 50-100K Storage/Hybrid Inverter
User Manual

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  • Page 1 Growatt New Energy Download Manual WIT 50-100K Storage/Hybrid Inverter User Manual Shenzhen Growatt New Energy Co., Ltd 4-13/F, Building A, Sino-German (Europe) Industrial Park, Hangcheng Ave, Bao'an District, Shenzhen, China +86 755 2747 1942 service@ginverter.com www.ginverter.com GR-UM-299-A-02...

  • Page 2: Table Of Contents

    Contents Notes on this manual ................1 1.1 Introduction ........................ 1 1.2 Target Group ....................... 1 1.3 Product Range......................1 Safety Precautions ................2 2.1 Safety Instructions ..................... 2 2.2 Symbol Conventions ....................3 2.3 Label Description......................4 3 Product Description ................5 3.1 Overview ........................
  • Page 3 6.4 Connection on the Battery Side ................32 Table 10.4 WIT 50/63/75/100K-HEspecification............112 6.4.1 Connecting the Main Power Cable of the Battery.......... 32 Table 10.5 WIT 50/63/75/100K-AU specification ............116 6.4.2 Connecting the Battery BMS-AC Terminal ............33 Table 10.6 WIT 50/63/75/100K-HU specification ............119 6.5 Connecting Communication Cables ..............

  • Page 4: Notes On This Manual

    This document is intended for qualified technicians. Only qualified and well-trained WARNING technicians are allowed to install and operate the WIT inverter. Should any questions arise during installation, you can visit www.growatt.com to leave a message, or call our 24- hour service hotline at +86 755 2747 1942. Installation: Ÿ...

  • Page 5: Symbol Conventions

    Symbol Description Ÿ Each WIT Inverter must be equipped with an AC circuit breaker. Multiple WIT Inverters cannot connect to the same AC circuit breaker. CAUTION indicates a hazard with potential risk which, if not avoided, Ÿ Do not connect the load between the WIT Inverter and the circuit could result in minor or moderate injury.

  • Page 6: Product Description

    3 Product Description Left view: The front view and the bottom view of all models are identical. NOTICE 3.1 Overview Front view: Fig 3.3 Left view of WIT 50-100K-A and WIT 50-100K-H Fig 3.1 Front view Bottom view: Fig 3.4 Left view of WIT 50-100K-AE, WIT 50-100K-AU, WIT 50-100K-HE Fig 3.2 Bottom view and WIT 50-100K-HU...

  • Page 7: Basic Data

    Right view: Table 3.1 Component description Description Description Display AC junction box Base Power grid connection terminal Load wiring terminal Heat sink Nameplate 16-pin terminal (BMS COM) 30 pin terminal (COM2) 16-pin terminal (COM1) USB interface box DC Switch PV terminal Battery supply terminal (BMS AC) Battery terminal DRMS port...

  • Page 8: Nameplate

    3.3 Nameplate 3.4 Operating Principle 3.4.1 Operating Principle of WIT 50-100K-A The following figure shows the nameplate of WIT 100K-HU and WIT 100K-AU as examples. The nameplate figure is for reference only. The actual nameplate prevails. For 1> Convert DC power into AC power consistent with the voltage and power quality detailed specifications, please refer to Section 10 Product Specifications.

  • Page 9: Operating Principle Of Wit 50-100K-Ae And Wit 50-100K-Au

    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...

  • Page 10: Clearing The Alarm

    Fig 4.2 WIT 50-100K-H Scope of Delivery 425”. In this case, please reboot the system and perform Step 1 to Step 3. If it failed again, please disconnect all power sources and contact Growatt support. 3.8 Anti-PID Function PID refers to the potential induced degradation. It occurs when a large amount of charge accumulates on the surface of the PV modules, causing the surface passivation to deteriorate.

  • Page 11: Installation 5

    Installation 5 5.1 Basic Installation Requirements A. Ensure that the installation surface is solid enough to bear the weight of the WIT Inverter. (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. C.

  • Page 12: Installation Environment Requirements

    J. Keep the WIT Inverter away from strong interference sources. C. Do not operate the WIT Inverter in an enclosed or narrow space. 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 13: Mounting The Wit Inverter

    5.4.2 Wall-mounting Installation The WIT 50-100K Storage/Hybrid Inverters can be mounted on the wall. For wall- mounted installation, you need to purchase the mounting bracket from Growatt. Determine the hole positions for installing the mounting bracket using the marking-off template and drill holes. Align the mounting bracket with the hole positions and insert nuts (φ12) into the holes.

  • Page 14: Electrical Connection 6

    Electrical Connection 6 Fig 5.12 Wall-mounting installation Ensure that the wall meets the load-bearing requirements of the equipment. For details about the weight of the inverter, see Table 3.2. NOTICE Wiring diagram of the system with a single WIT 50-100K-HU inverter...
  • Page 15 Wiring diagram of the system with two WIT 50-100K-HU inverters Wiring diagram of the system with three WIT 50-100K-HU inverters connected in parallel connected in parallel...

  • Page 16: Connecting The Ground Cables

    6.1 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 should be properly grounded, including the rack and the enclosures of the combiner box, the distribution panel, the inverter and the battery.

  • Page 17: Connection On The Ac Side

    Recommended cable specification them. Otherwise, the loose connection may cause overheating that WARNING will damage the device. Ensure that the terminals are properly WIT 50K-A/-H 35mm connected before powering on the WIT Inverter. Ÿ After connecting the cables, apply the fireproof mud evenly on the...

  • Page 18: Connection On The Pv Side

    Ÿ Ensure that the following conditions are met; Otherwise, fire hazard cable specifications; or inverter damage may occur. Growatt is not liable for the WARNING 3. WIT 50-100K-AE, WIT 50-100K-HE, WIT 50-100K-AU and WIT 50-100K-HU models consequence and it is beyond the warranty scope.

  • Page 19: Connection On The Battery Side

    NOTE: 1. For a single WIT Inverter, connect the ground cable of the inverter. For a system with multiple WIT Inverters connected in parallel, connect the ground cables of all inverters and the metal racks of the PV modules to the same area to ensure equipotential bonding.

  • Page 20: Connecting The Battery Bms-Ac Terminal

    Procedure for connecting the main battery power: Route the cable Connect to the terminal 1. Connect the ground cable to the battery power ground bar, as shown in Fig 6.6; 2. Strip 18-20 mm of the insulation layer of the DC cables; 3.

  • Page 21: External Communication Connection

    BMS-COM BMS-COM Wakeup+ Wakeup- RS485A3 RS485B3 CANH CANL CAN.GND Fig 6.8 BMS-COM communication terminals Ttable 6.4 Battery communication terminal description Fig 6.9 BMS-COM communication connection Definition of battery communication terminal 6.5.2 External Communication connection NOTE: Number Definition of signal Note When connecting external devices, such as the PC, please use isolated communication devices.

  • Page 22: Parallel Communication Connection

    6.5.3 Parallel Communication Connection COM1 The parallel communication terminal (COM2) of the WIT Inverter uses a 30-pin terminal. RS485A4 The corresponding terminal is included in the accessary kit. Follow these steps to establish the connection: RS485B4 RS485A1(IN) 1. Connect the communication cables to the corresponding terminals as required. For details, see Table 6.6 and Table 6.7;...
  • Page 23 Table 6.6 Parallel communication terminal description Table 6.7 Parallel communication terminal description Pin definition of the parallel communication terminal Pin definition of the parallel communication terminal （WIT 50-100K-HE, WIT 50-100K-HU, WIT 50-100K-AE, WIT 50-100K-AU） (WIT 50-100K-A and WIT 50-100K-H) Number Definition of signal Note Number...

  • Page 24: Monitoring Device Terminal

    6.5.4 Monitoring Device Terminal Route the cable Open the cover The WIT inverter is equipped with a USB port that allows for remote monitoring when connected to a monitoring device, such as a USB-to-WiFi module, ShineWiFi-X, Shine4G- X, ShineLan-X, and others. Additionally, you can perform software updates using a USB flash drive.

  • Page 25: Post-Installation Checks

    6.6 Post-installation Checks Position Item Check item The following table lists the post-installation items to be checked: Ensure that the connection is correct and Position Item Check item BMS-COM secured; the sealing rubber ring is properly seated into the gland Ground cable connected Check the cable specifications;...

  • Page 26: Commissioning

    Section 8.1.1. Tap Control > Set Inverter Time, then enter the password “growatt+date”. For instance, if the date is July 18, 2023, the password would be “growatt20230718”. After that, tap “Yes”.

  • Page 27: Mode Of Operation

    NOTE: 1. It is recommended to charge batteries with grid power during off-peak times and discharge battery power during peak hours to lower your electric bills. 2. The working modes listed above are applicable to the grid-tied power system. For the off-grid system, the WIT Inverter converts battery power to power the loads.

  • Page 28: Led And Oled Display Panel

    7.4 LED and OLED Displays Panel The LED and OLED display panel demonstrating the running status of the WIT Inverter is shown in the Fig 7.1. The symbol descriptions are provided in Table 7.1; The user Output Power interfaces are shown in Fig 7.2, and the LED indicator descriptions are available in Table ROWATT 123.4 7.2.

  • Page 29: Monitoring

    8.1 Remote Monitoring Status Meaning Growatt WIT 50-100K Storage/Hybrid inverters support remote monitoring, which can be Off-grid mode is disabled enabled by installing a datalogger. The operation and configuration methods vary based on different datalogger models. For details, please refer to the links below.
  • Page 30 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. 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.
  • Page 31 (5) On the “Control” screen, you can configure the WIT Inverter. The password is in the format of “Growatt + the current date”, e.g. Growatt20230718. Ø Set Working Modes for Different Time Periods Tap Control > Mode Selection and Time Setting; 6 time segments are configurable. You (4) On the “Log”...
  • Page 32 Ø Set Inverter On/Off Ø Set the Working Mode and the On-/Off-grid mode Tap Control > Set Inverter On/Off; you can power on/off the inverter, as the figure Tap Control > Mode selection and On/off grid mode setting. Two options are available: shows.
  • Page 33 Ø Set the Off-grid Parameters Ø Set AC Charging and Discharging Power Tap Control > Off-grid Setting, you can enable/disable the off-grid mode, set the off- Tap Control > AC Charging and Discharging Power, you can configure the AC grid frequency (50Hz/60Hz) and the off-grid voltage (220V/230V/240V/277V/127V), charging/discharging power and choose whether to remember your settings, as the complying with the safety regulations.
  • Page 34 Ø Set the Reactive Power Ø Set the Single-phase Export Limitation Tap Control > Set reactive power, you can select the corresponding PF mode and Tap Control > Single Export, you can enable/disable the single-phase export limitation whether to remember your settings, as the figure shows. function, as the figure shows.
  • Page 35 Ø Set the Maximum Charging/Discharging Current Ø Set the EOD voltage Tap Control > Max. Charging/Discharging Current, you can set the maximum Tap Control > EOD Voltage, you can set the battery discharge cutoff voltage, ranging charging/discharging current, ranging from 0 to 200A, as the figure shows. from 600 V to 1000V, as the figure shows.
  • Page 36 (6) Edit: you can change the device name as the figure shows. 3. GroHome: displays the home energy system, including four sections: “PV linkage”, “My device list”, “My room” and “My scenario”.

  • Page 37: Remote Monitoring On The Shineserver Webpage

    1. Open the browser, then enter https://server.growatt.com/login?lang=en in the address contact the Growatt after-sales support or refer to the related document. box to access the login page. Click “Register an Account” if you do not have an account. 2. After the Registration Page is displayed, fill in the information as required and click to agree to the Privacy Policy.
  • Page 38 3. On the Login screen, enter the username and the password to log in to the home screen. 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) Enter the verification code of the datalogger 4.
  • Page 39 6. After adding the datalogger successfully, you can click Dashboard to view details about 2. Energy Trend related devices. 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...
  • Page 40 2. Plant Management 2. Download A range of documents are available for download. Click Plant Management and you can view all PV plants associated with the current account. 1) Edit: Click the “Edit” icon (indicated in the figure above) to modify the PV plant information 2) Delete: Click the “Delete”...
  • Page 41 2. WIT 10.2) Powering on/off the device: you can power on/off the device remotely 1) Enter the serial number to find the device; 2) Device model; 3) User name and the PV plant to which the device is connected; 4) Daily and monthly energy yield; 5) Serial number of the selected device;...
  • Page 42 10.6) Low grid voltage limit (voltage lower threshold of grid connection) 10.4) Mode switch: you can choose to switch the working mode manually or automatically. If “Manual” is selected, you can set the device to operate in on-grid or off-grid mode. Generally, you are advised to select “Automatic” mode switch. 10.7) High grid frequency limit (frequency upper threshold of grid connection) 10.5) High grid voltage limit (voltage upper threshold of grid connection)
  • Page 43 10.8) Low grid frequency limit (frequency lower threshold of grid connection) 10.10) Off-grid frequency: two options are available: 50Hz/60Hz 10.9) Set off-grid mode on/off: you can set whether to operate the inverter in the off-grid 10.11) Off-grid voltage: you can set the value to 220V/230V/240V/277V/127V mode...
  • Page 44 10.12) Save the PF Command: you can set whether to save the PF command setting 10.14) Charge cutoff SOC: you can set the battery charge cutoff SOC (100 is recommended) 10.13) AC charging power: you can set the inverter's maximum 10.15) Enable AC charging: output power...
  • Page 45 10.16) AC discharge power: you can set the battery discharge power 10.18) Set Reactive Power: you can set the corresponding PF mode and select whether to save the configured values 10.17) Discharge cutoff SOC: you can set the battery discharge cutoff SOC (10 is 10.19) Export Limitation: You can enable/disable the export limitation function according recommended) to the local applicable regulations and set the export limit power rate if it is...
  • Page 46 10.22) Charge Max. Current: you can set the battery maximum charge current 10.20) Single-phase Export Limitation 10.21) Set PF value: you can set the PF value, ranging from -1 to 1. 10.23) Discharge Max. Current: you can set the battery maximum discharge current...
  • Page 47 10.24) Equalization voltage: you can set the battery maximum charge voltage 10.26) Customized PF curve: you can set the power percentage and the power factor for each point of the PF curve 10.25) EOD voltage: you can set the battery discharge cutoff voltage Meter 1) Enter the serial number of the meter or the datatlogger to search for the desired meter 2) Meter type...

  • Page 48: System Maintenance

    9 System Maintenance 9.1 Routine Maintenance 风扇盖 9.1.1 Clean the Chassis Å¡¿ªÐýÅ¥ Before performing any operation, disconnect the AC and DC power Ÿ supply and wait for 5 minutes after the system is powered off. Wipe the dust off the chassis and clean the chassis with a moistened Ÿ...

  • Page 49: Troubleshooting

    1. After shutdown, check the AC SPD. Growatt support. AC SPD Warning AC SPD function abnormal 2. If the fault persists, contact Growatt. 1. Check if the meter is properly connected. 1. Power off the system and check the Warning 308 Meter disconnected 2.
  • Page 50 1. Check if the power of the load 3. Restart the inverter. If the error Lithium battery overload exceeds the BAT rated discharge power. Warning 508 message persists, contact Growatt protection 2. If the error message persists, contact support. Growatt support.

  • Page 51: Error

    Off-grid bus voltage too Warning 605 2. Restart the inverter. If the error 1. After shutdown, check the message persists, contact Growatt connection of the PV string. support. An arc fault has been AFCI Fault 2. Restart the inverter.
  • Page 52 Error 412 permissible range 2. If the error message persists, please disconnected 2. If the error message persists, please contact Growatt support.. contact Growatt support. 1. Check the grid frequency and restart Grid ROCOF (Rated of 1. Restart the inverter.
  • Page 53 1. Check if the power of the load Error 427 2. If the error message persists, please abnormal exceeds the battery rated discharge contact Growatt support. Error 507 Battery overload protection power. 2. If the error message persists, please 1. Restart the inverter.

  • Page 54: Product Specifications 10

    Product Specifications 10 Error Code Description Suggestion Table 10.1 WIT 50/63/75/100K-A Specification 1. Restart the inverter. Model High DC component in WIT 50K-A WIT 63K-A WIT 75K-A WIT100K-A Error 606 2. If the error message persists, please output voltage Specifications contact Growatt support.

  • Page 55: Warranty

    Model Model WIT 50K-A WIT 63K-A WIT 75K-A WIT100K-A WIT 50K-A WIT 63K-A WIT 75K-A WIT100K-A Specifications Specifications Voltage accuracy Relative humidity 0~100% Frequency accuracy 0.1Hz Altitude 4000m Nighttime power THDv consumption Unbalanced load 100% three-phase unbalanced Standby power 250W consumption ≤110%，continuous;...
  • Page 56 Table 10.2 WIT 50/63/75/100K-H Specification Model WIT 50K-H WIT 63K-H WIT 75K-H WIT100K-H Model Specifications WIT 50K-H WIT 63K-H WIT 75K-H WIT100K-H Specifications Power factor (@nominal >0.99 power) Input data (DC) Adjustable power factor (1 leading～1 lagging) Max. recommended PV 109200W 124800W 156000W...
  • Page 57 Model Model WIT 50K-H WIT 63K-H WIT 75K-H WIT100K-H WIT 50K-H WIT 63K-H WIT 75K-H WIT100K-H Specifications Specifications EN 62920-2017 AC short-circuit protection AC surge protection Yes(Type II) EN50549-1, NRS 097-2-1, G99:2020, UKCA, VDE 4105, VDE4110, CEI 0-21:2019+V1:2020, CEI 0- Ground fault monitoring Grid connection standards 16:2019+V1:2020, TOR Type A, VDE 0126, NC RFG,...
  • Page 58 Table 10.3 WIT 50/63/75/100K-AE Specification Model WIT 50K-AE WIT 63K-AE WIT 75K-AE WIT100K-AE Specifications Model WIT 50K-AE WIT 63K-AE WIT 75K-AE WIT100K-AE Rated AC output Specifications 50/60 Hz frequency Battery data (DC) 90.9A@220V 114.5A@220V 136.4A@220V 181.8A@220V Max. output current 87A@230V 109.6A@230V 130.4A@230V 173.9A@230V...
  • Page 59 Table 10.4 WIT 50/63/75/100K-HE Specification Model WIT 50K-AE WIT 63K-AE WIT 75K-AE WIT100K-AE Specifications Model WIT 50K-HE WIT 63K-HE WIT 75K-HE WIT100K-HE General data Specifications Dimensions (W /H / D) in 820*1350*510mm Input data (DC) Max. recommended PV Weight 130kg 109200W 124800W 156000W...
  • Page 60 Model Model WIT 50K-HE WIT 63K-HE WIT 75K-HE WIT100K-HE WIT 50K-HE WIT 63K-HE WIT 75K-HE WIT100K-HE Specifications Specifications 151.5A/75.6A 190.9A/95.5A 227.3A/113.6A 303A/151.5A MPPT efficiency 99.90% 99.90% 99.90% 99.90% @220V @220V @220V @220V Rated output current Protection devices 144.9A/72.5A 182.6A/91.3A 217.4A/108.7A 289.9A/144.9A @230V @230V...
  • Page 61 Table 10.5 WIT 50/63/75/100K-AU Specification Model WIT 50K-HE WIT 63K-HE WIT 75K-HE WIT100K-HE Specifications Model WIT 50K-AU WIT 63K-AU WIT 75K-AU WIT100K-AU Nighttime power Specifications consumption Battery data (DC) Standby power 250W Continuous charging / consumption 56700W 71400W 85100W 113500W discharging power Topology Transformerless...
  • Page 62 Model Model WIT 50K-AU WIT 63K-AU WIT 75K-AU WIT100K-AU WIT 50K-AU WIT 63K-AU WIT 75K-AU WIT100K-AU Specifications Specifications Nominal AC output WIFI Optional 50/60 Hz frequency General data 90.9A@220V 114.5A@220V 136.4A@220V 181.8A@220V Max. output current 87A@230V 109.6A@230V 130.4A@230V 173.9A@230V Dimensions (W /H / D) in 820*1350*510mm Voltage accuracy Weight...
  • Page 63 Table 10.6 WIT 50/63/75/100K-HU Specification Model WIT 50K-HU WIT 63K-HU WIT 75K-HU WIT100K-HU Specifications Model WIT 50K-HU WIT 63K-HU WIT 75K-HU WIT100K-HU 151.5A/75.6A 190.9A/95.5A 227.3A/113.6A 303A/151.5A Specifications @220V @220V @220V @220V Rated output current Input data (DC) 144.9A/72.5A 182.6A/91.3A 217.4A/108.7A 289.9A/144.9A @230V @230V...
  • Page 64 Model Model WIT 50K-HU WIT 63K-HU WIT 75K-HU WIT100K-HU WIT 50K-HU WIT 63K-HU WIT 75K-HU WIT100K-HU Specifications Specifications Nighttime power MPPT efficiency 99.90% 99.90% 99.90% 99.90% consumption Protection devices Standby power 250W consumption PV reverse protection Topology Transformerless PV input DC switch Cooling Fan cool Protection degree...
  • Page 65 7> Remove the WIT inverter from the bracket if it is wall-mounted. 8> Dispose of the inverter according to locally applicable disposal regulations. Growatt shall not be liable for any consequences of the following circumstances: 1. Unauthorized removal of the product, such as removing the tamper-proof label and the upper cover of the WIT Inverter.
  • Page 66 If you have technical problems with our products, please contact Growatt for technical support. Please have the following information ready in order to provide you with the necessary assistance: 1. Model number of the WIT Inverter 2. Serial number of the WIT Inverter 3.

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