Growatt WIT 50-100K-US User Manual

Growatt WIT 50-100K-US User Manual

Storage/hybrid inverter
Table of Contents

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WIT 50-100K-US Storage/Hybrid Inverter
User Manual
Growatt USA, Inc
9227 Reseda Blvd, #435 Northridge, CA 91324, USA
T 866-686-0298
E usaservice@ginverter.com
W www.growatt-america.com
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Summary of Contents for Growatt WIT 50-100K-US

  • Page 1 WIT 50-100K-US Storage/Hybrid Inverter User Manual Growatt USA, Inc 9227 Reseda Blvd, #435 Northridge, CA 91324, USA T 866-686-0298 E usaservice@ginverter.com W www.growatt-america.com...
  • Page 2: Table Of Contents

    Contents 1. Notes on this manual ........................4 1.1 Introduction ...........................4 1.2 Target Group .........................4 1.3 Product Range ........................4 2. Safety Precautions .......................... 4 2.1 Safety Instructions ........................ 5 2.2 Symbol Conventions ......................6 2.3 Label Description ........................7 3. Product Description ........................8 3.1 Overview ..........................8 3.2 Basic Data ...........................
  • Page 3 6.5.4 Monitoring Device Terminal ................... 43 6.5.5 DRMS Port ......................43 6.5.6 Rapid Shutdown Device (RSD) ................44 6.6 Post-installation Checks ..................... 46 7. Commissioning ..........................47 7.1 Commissioning the WIT Inverter ..................47 7.1.1 Set the Communication Address ................47 7.1.2 Set the Time and Date ....................47 7.2 Mode of operation ......................
  • Page 4: Notes On This Manual

    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 www.growatt.com to leave a message, or call our 24-hour service hotline at 866-686-0298.
  • Page 5: Safety Precautions

    2. Safety Precautions 2.1 Safety Instructions Please read this manual carefully before installation. Damages caused by failure to follow the instructions in the manual are beyond the warranty scope. Only qualified and trained electrical technicians are allowed to perform operations on the WIT Inverter.
  • Page 6: Symbol Conventions

    Each WIT Inverter must be equipped with an AC circuit breaker. Multiple ● WIT Inverters cannot connect to the same AC circuit breaker. Do not connect the load between the WIT Inverter and the circuit breaker. ● If the cable is thick, do not shake the cable terminals after tightening them. ●...
  • Page 7: Label Description

    NOTICE indicates that under certain circumstances, improper operations could result in property damage. Remind operators to check the instructions before installing or operating the WIT Inverter. 2.3 Label Description Symbol Name Meaning High voltages exist after the WIT Inverter is powered on. High voltage Only qualified and trained electrical technicians are allowed to perform operations.
  • Page 8: Product Description

    3. Product Description The front view and the bottom view of all models are identical. 3.1 Overview Front view: Fig 3.1 Front view Bottom view: Fig 3.2 Bottom view...
  • Page 9 Left view: Fig 3.3 Left view of WIT 50-100K-A-US and WIT 50-100K-H-US Fig 3.4 Left view of WIT 50-100K-AE-US, WIT 50-100K-AU-US, WIT 50-100K-HE-US and WIT 50-100K-HU-US...
  • Page 10 Right view: Fig 3.5 Right view of WIT 50-100K-A-US, WIT 50-100K-AE-US and WIT 50-100K-AU-US Fig 3.6 Right view of WIT 50-100K-H-US, WIT 50-100K-HE-US, WIT 50-100K-HU-US...
  • Page 11: Basic Data

    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 Flexible handle (4 groups)
  • Page 12: Nameplate

    3.3 Nameplate Fig 3.7 Nameplate NOTE: The figure above shows the nameplate of WIT 100K-HU-US as an example nameplate figure is for reference only. The actual nameplate prevails. For the specifications, please refer to Section 10 Product Specifications.
  • Page 13: Operating Principle

    3.4 Operating Principle 3.4.1 Operating Principle of WIT 50-100K-A-US 1> Convert DC power into AC power consistent with the voltage and power quality requirements of the utility grid through an inverter circuit to supply power to the loads and feed power into the grid;...
  • Page 14: Operating Principle Of Wit 50-100K-He-Us And Wit 50-100K-Hu-Us

    Charge the battery from the grid through a rectifier circuit; 2> 3> Convert the battery power into AC power through the inverter circuit to provide power to critical loads connected to the LOAD port. Fig 3.10 WIT 50-100K-AE-US, WIT 50-100K-AU-US Grid-connected conceptual diagram 3.4.4 Operating Principle of WIT 50-100K-HE-US and WIT 50-100K-HU-US 1>...
  • Page 15: Supported Grid Types

    Fix the time and date before connecting the inverter to the grid. For details, see 7.1 Commissioning the WIT Inverter. 3.6 Supported Grid Types Grid connection modes for WIT 50-100K-US Storage/Hybrid Inverters are shown in Fig 3.12. Fig 3.12 380V /400V system (Type Y/△) 3.7 AFCI Function 3.7.1 AFIC Function Description...
  • Page 16: Anti-Pid Function

    If it fails, the inverter will report “Error 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.
  • Page 17: 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 of delivery is intact and complete. If any damage is found or any component is missing, contact your distributor.
  • Page 18 NOTE: For the WIT 50-100K-H-US, WIT 50-100K-HE-US, WIT 50-100K-HU-US inverters, 14 pairs of PV terminals and 14 pairs o3.2f metal contacts are delivered with the 50kW models; 16 pairs of PV terminals and 16 pairs of metal contacts are delivered with 63kW models; 20 pairs of PV terminals and 20 pairs of metal contacts are delivered with 75kW and 100kW models.
  • Page 19: Installation

    5.Installation 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) Ensure that the installation position is suitable for the dimensions of the WIT Inverter. Do not install the WIT Inverter in areas with flammable or thermolabile materials.
  • Page 20: Installation Environment Requirements

    5.2 Installation Environment Requirements A. Though the WIT Inverter is protected to IP66, do not expose it to direct sunlight, rain and snow. Please refer to the figures below: Fig 5.3 B. It is recommended an awning be installed over the WIT Inverter to extend its service life and avoid performance de-rate.
  • Page 21: Moving The Wit Inverter

    5.3 Moving the WIT Inverter To prevent personal injury caused by a falling inverter, keep balance and be ● careful when moving the WIT Inverter as it is heavy. Plan 1 Hoisting: 1> As shown in Fig 5.6 below, unpack the WIT Inverter (remove the top panel and the support plates).
  • Page 22: Mounting The Wit Inverter

    Plan 3 Lifting: 1> Unpack the WIT Inverter (remove the top panel and the support plates) and pull out the handles, as shown in Fig 5.8 below. It requires four people to lift the WIT Inverter and move it to the installation position;...
  • Page 23: Wall-Mounted 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 24 NOTE: The marking-off template and mounting bracket are optional accessories. Customers who purchase the mounting bracket will have a marking-off template delivered with the bracket. Fig 5.12 Wall-mounted installation Ensure that the wall meets the load-bearing requirements of the equipment. For details about the weight, see Table 3.2.
  • Page 25: Electrical Connections

    6.Electrical Connections Wiring diagram of the system with a single WIT 50-100K-HU-US inverter...
  • Page 26 Wiring diagram of the system with two WIT 50-100K-HU-US inverters connected in parallel...
  • Page 27 Wiring diagram of the system with three WIT 50-100K-HU-US inverters connected in parallel...
  • Page 28 Wiring diagram of the system with a single WIT 50-100K-HU-US inverter and two meters...
  • Page 29: 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, including the rack and the enclosures of the combiner box, the distribution panel, the inverter and the battery should be properly grounded.
  • Page 30 ● Each WIT Inverter must be equipped with an AC circuit breaker. Multiple WIT Inverters cannot connect to the same AC circuit breaker (not applicable to off-grid mode). Please do not connect loads between the WIT Inverter and the circuit breaker. ●...
  • Page 31 Device type Recommended cable specification WIT 50K-A/-H-US 1AWG WIT 63K-A/-H-US 1AWG WIT 75K-A/-H-US 2/0AWG WIT 100K-A/-H-US 2/0AWG 2.Recommended AC power cable specifications for WIT 50-100K-AE-US, WIT 50-100K-AU-US, WIT 50-100K-HE-US and WIT 50-100K-HU-US models. Recommended cable on the AC side Recommended cable on the load Device type side WIT 50K...
  • Page 32: Connection On The Pv Side

    NOTE: 1. Determine the stripped length according to the wiring position (recommendation: 22-26 mm for power cables and 22-26 mm for ground cables). Remove the protective plugs and install the cable conduits correctly. Then route the cables through the holes at the bottom of the AC junction box, referring to Fig 6.4.
  • Page 33 ● Ensure that the following conditions are met; Otherwise, fire hazard or inverter ● damage may occur. Growatt is not liable for the consequence and it is beyond the warranty scope. NOTE: 1. The solar irradiance on the PV modules generates voltage and high voltages presented in the PV strings connected in series could be fatal.
  • Page 34: Connection On The Battery Side

    Table 6.1 Maximum current of a single MPPT route Device type Max. current of a single MPPT route WIT 50-100K-H-US 16A*2 WIT 50-100K-HE-US 16A*2 WIT 50-100K-HU-US 16A*2 Table 6.2 Cable specifications on the PV side Device type Recommendation cable specifications WIT 50-100K-H-US 12AWG WIT 50-100K-HE-US...
  • Page 35: Connecting The Battery Bms-Ac Terminal

    2. Disconnect the DC switches on the WIT inverter, the AC breaker and the DC switch on the battery; 3. Take out the battery terminals from the accessory kit delivered with the package. See Packing List in Section 4; 4. Open the cover plate on the right side of the inverter, the position of which is shown in Fig 6.1. Procedure for connecting the main battery power: 1.
  • Page 36: Connecting Communication Cables

    6.5 Connecting Communication Cables 6.5.1 Battery Communication Connection The BMS-COM terminal of the WIT 50-100K-US Inverter is a 16-pin connector. The matching male terminals are delivered with the package. 1. Connect the communication cables to the corresponding terminals as required. For details, see Table 6.4;...
  • Page 37 Fig 6.8 BMS-COM communication terminal Fig 6.9 BMS-COM communication connection...
  • Page 38: External Communication Connection

    When connecting to external devices, such as the PC, please use isolated communication devices. The external communication terminal of the WIT 50-100K-US Inverter is a 16-pin connector. The matching terminal is in the accessory kit. The connection procedure is as follows: 1.
  • Page 39: Parallel Communication Connection

    Fig 6.11 COM1 communication connection 3. The external communication terminals of the WIT 50-100K-US Inverters are described in Table 6.5. Short Pin 5 and pin 10 when the host computer is used. Table 6.5 External communication terminal description Definition of battery communication terminal...
  • Page 40 1.Connect the communication cables to the corresponding terminals as required. For details, see Table 6.6 and Table 6.7; 2.Remove the dustproof cover from the COM2 terminal and insert the 30-pin terminal (the client side) to the corresponding position. Fig 6.12 Parallel communication terminal Fig 6.13 COM2 communication connection...
  • Page 41 Table 6.6 Parallel communication terminal description Definition of parallel communication terminal (WIT 50-100K-A-US and WIT 50-100K-H-US) Number Definition of signal Note 24V.S Output 24V signal GND.S CAN1_H CAN1_L Parallel communication CAN1 signal (input) GND.S CAN2_H Parallel communication CAN2 signal (input) CAN2_L RS485_1A Parallel communication 485-1 signal (input)
  • Page 42 Table 6.8 Description of parallel signal terminal interface Definition of parallel signal terminal interface (WIT 50-100K-HE-US, WIT 50-100K-HU-US, WIT 50-100K-AE-US, WIT 50-100K-AU-US) Number Definition of signal Note 24V.S External output 24V signal GND.S CAN1_H CAN1_L Parallel communication CAN1 signal (input) GND.S CAN2_H Parallel communication CAN2 signal (input)
  • Page 43: Monitoring Device Terminal

    Fig 6.14 Connecting the monitoring device 6.5.5 DRMS Port The WIT 50-100K-US Inverters have a DRMS port. Users can choose to connect this terminal if required by local regulations. The connection procedure is as follows: Connect the communication cable to the port as required. The DRMS port is a standard RJ45 terminal block, so you can follow the Ethernet cable connection method.
  • Page 44: Rapid Shutdown Device (Rsd)

    Increase power generation (subject to constraints from other active DRMs) 6.5.6 Rapid Shutdown Device (RSD) The Rapid Shutdown Device (RSD) is used to shut down the WIT 50-100K-US system and stop the PV side from supplying power to the inverter. The RSD is a normally closed (NC) contact.
  • Page 45 Fig 6.15 Rapid shutdown device (RSD) Installation: 1. Unscrew the four plastic screws assembled on the RSD in the accessory kit using a cross-head screwdriver. 2. Drill four holes in the wall using an electrical drill with an M6 drill bit. 3.
  • Page 46: Post-Installation Checks

    6.6 Post-installation Checks The following table lists the post-installation items to be checked: Position Item Check item Ground cable connected Check the cable specifications; ensure that the cable has been to the chassis securely fastened Ground cable on the AC Check the cable specifications;...
  • Page 47: 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 48: 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 180V, the WIT Inverter will be powered on and enters the waiting mode.
  • Page 49: Fault Mode

    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 50: Led And Oled Display Panel

    NOTE: When the DC input voltage is less than or equal to 150Vdc or the battery voltage is lower than 600V, the WIT Inverter enters the shutdown mode automatically. 7.3 LED and OLED Display Panel The LED and OLED display panel demonstrating the running status of the WIT Inverter is shown in the Fig 7.1.
  • Page 51 Fig 7.2 User interfaces...
  • Page 52 Table 7.2 Indicator description Status Meaning The system is not operating Steady green The system is operating properly Blinking green at The system is in standby mode or performing an upgrade long intervals Steady red System failure The PV voltage dose not reach the operating voltage Steady green The PV voltage reaches the operating voltage Steady red...
  • Page 53: Monitoring

    8. Monitoring 8.1 Remote Monitoring WIT 50-100K-US Inverters support remote monitoring on the APP with a USB-WiFi module. 8.1.1 Remote Monitoring on the APP (ShinePhone) 1. Scan the following QR code or search for “ShinePhone” in Google/Apple Store to download and install the mobile APP.
  • Page 54 Home Screen of ShinePhone 1. Dashboard: displays the basic 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: 2. Plant: displays the plant list and the basic information about each PV plant, as shown in the figure below.
  • Page 55 Three sections - “Events”, “Control” and “Edit”, are available at the bottom. (4) On the “Log” screen, you can view the fault/warning message and suggested solutions. (5) On the “Control” screen, you can configure the WIT Inverter. The password is in the format of Growatt + the current date, e.g. Growatt20230719.
  • Page 56 Set Working Modes for Different Time Periods Tap Control > Mode Selection and Time Setting; 6 time segments are configurable. You can set the start and end time of each period and the corresponding working mode, including Load First, Battery First and Grid First based on the electricity rates and the power consumption. You can choose to enable or disable the working mode for each preset period.
  • Page 57 Set the Time of the Inverter Tap Control > Set Inverter Time; you can set the local time, as the figure shows. Set the Working Mode and the On-/Off-grid mode Tap Control > Mode selection & On/off grid mode setting. Two options are available: Automatic mode and Manual mode.
  • Page 58 Set the Grid Parameters Tap Control > Grid parameters, you can set the voltage upper/lower threshold of grid connection and the frequency upper/lower threshold of grid connection, as the figure shows. Set the Off-grid Parameters Tap Control > Off-grid Setting, you can enable/disable EPS mode, set the off-grid frequency (50Hz/60Hz) and the off-grid voltage (220V/230V/240V/277V/127V), complying with the safety regulations.
  • Page 59 Set Whether to Apply the Following PF Command Tap Control > Whether to apply the following PF command, you can select whether to apply the following PF command, as the figure shows. 图 8.27 图 8.28 Set AC Charging and Discharging Power Tap Control >...
  • Page 60 Set the Storage Parameters Tap Control > Storage Parameter Setting, you can enable/disable the AC charging function, the charging cutoff SOC (100 is recommended) and the discharging cutoff SOC (10 is recommended), as the figure shows. Set the Reactive Power Tap Control >...
  • Page 61 remember your settings, as the figure shows. Set the Export Limitation Parameters Tap Control > Export Limitation, you can enable/disable the export limitation function according to local regulations. If the Export Limitation function is enabled, you can set the Export power limit, as the figure shows. Set the Single-phase Export Limitation Tap Control >...
  • Page 62 Set the Power Factor Tap Control > Set power factor, you can set the PF value, ranging from -1 to 1, as the figure shows. Set the Maximum Charging/Discharging Current Tap Control > Max. Charging/Discharging Current, you can set the maximum charging/discharging current, ranging from 0 to 200A, as the figure shows.
  • Page 63 Set the Equalization Voltage Tap Control > Equalization Voltage, you can set the battery maximum charging voltage, ranging from 600 V to 1000V, as the figure shows. Set the EOD voltage Tap Control > EOD Voltage, you can set the battery discharge cutoff voltage, ranging from 600 V to 1000V, as the figure shows.
  • Page 64 Set the Custom Pf Curve Tap Control > Custom Pf curve, you can set the power percentage and the power factor of each point, as the figure shows. (6) Edit: you can change the alias of the WIT Inverter as the figure shows.
  • Page 65 3. GroHome: displays the home energy system, including four sections: “PV linkage”, “My device list”, “My room” and “My scenario”.
  • Page 66 4. Support: 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 document.
  • Page 67 5. Me: You can check the account information, configure the datalogger or view notifications, as shown in the figure below.
  • Page 68: System Maintenance

    9. System Maintenance 9.1 Routine Maintenance 9.1.1 Clean the Chassis Before performing any operation, disconnect the AC and DC power 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 cloth. ●...
  • Page 69 Fig 9.1 Position of the fan fixing plate 3> Disconnect the fan connector, remove the fan fixing plate with a screwdriver, and remove the fan, as shown in Fig 9.2: Fig 9.2 Position of the fan NOTE: WIT 50-100K-A-US, WIT 50-100K-H-US,WIT 50-100K-AE-US, WIT 50-100K-HE-US models have five external fans;...
  • Page 70: Troubleshooting

    PV string/PID quick-connect 1. Check the wiring of the string terminals after shutdown. Warning 201 terminals abnormal 2. If the error message persists, contact Growatt support. 1. Check the DC SPD after shutdown. DC SPD function abnormal Warning 2. If the error message persists, contact Growatt support.
  • Page 71 No utility grid connected or utility 1. Check if the grid is down. Warning 300 grid power failure 2. If the error message persists, contact Growatt support. Grid voltage is beyond the 1. Check if the grid voltage is within the specified range. Warning 301 permissible range 2.
  • Page 72: 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.
  • Page 73 3. If the error message persists, please contact Growatt support. 1. Restart the inverter. An excessively high leakage GFCI High 2. If the error message persists, please contact Growatt current has been detected support. 1. Disconnect the DC switch immediately and check the voltage.
  • Page 74 Error 311 2. If the error message persists, please contact Growatt support. 1. Restart the inverter. DCI bias abnormal 2. If the error message persists, contact Growatt Error 400 support. 1. Restart the inverter. High DC component in 2. If the error message persists, contact Growatt...
  • Page 75 Growatt support. 1. Restart the inverter. Auxiliary power supply 2. If the error message persists, please contact Error 415 abnormal Growatt support. 1. Restart the inverter. DC/AC overcurrent 2. If the error message persists, please contact Error 416 protection Growatt support.
  • Page 76 3. If the error message persists, please contact Growatt support. 1. Figure out the fault based on the BMS error The BMS reports that the code. battery failed Error 501 2. If the error message persists, please contact charge/discharge Growatt support.
  • Page 77 Off-grid BUS Volt Low Error 601 2. If the error message persists, please contact Growatt support. 1. Check if a voltage is present at the AC port. Abnormal Volt at the 2. If the error message persists, please contact...
  • Page 78: Product Specifications

    10. Product Specifications Table 10.1 WIT 50/63/75/100K-A-US specification Model WIT 50K-A-US WIT 63K-A-US WIT 75K-A-US WIT100K-A-US Specifications Battery data(DC) Continuous charging 56700W 71400W 85100W 113500W discharging power Battery voltage range 750-1000V(for 3P3W ) 768V Rated battery voltage Max. charging discharging current 75.6A 95.2A 113.5A...
  • Page 79 Frequency accuracy 0.1Hz THDv Unbalanced load 100% three-phase unbalanced ≤110%,continuous; Overload capacity 110%~120%:10min >120%,200ms Efficiency Max. battery charge/discharge 98.20% 98.20% 98.20% 98.20% efficiency Protection devices reverse polarity protection DC surge protection Yes(Class II) Yes(Class II) Yes(Class II) Yes(Class II) Insulation resistance monitoring RCD detection AC short-circuit...
  • Page 80 consumption Topology Transformerless Transformerless Transformerless Transformerless Cooling Smart air cooling Smart air cooling Smart air cooling Smart air cooling Protection degree IP66 IP66 IP66 IP656 Warranty 5/10 years (Optional) 5/10 years (Optional) 5/10 years (Optional) 5/10 years (Optional) Standard compliance Safety UL 1741:2021, UL 1741 SA/SB:2020, CSAC22.2 NO107.1-2016 FCC Part 15...
  • Page 81 Table 10.2 WIT 50/63/75/100K-H-US specification Model WIT 50K-H-US WIT 63K-H-US WIT 75K-H-US WIT100K-H-US Specifications Input data (DC) Max. recommended PV power (for module 109200W 124800W 156000W 156000W STC) Max. DC voltage 1100V 1100V 1100V 1100V Start-up voltage 195V 195V 195V 195V Nominal voltage 550V...
  • Page 82 Max. output current 66.2A 83.4A 99.3A 132.4A Power factor >0.99 (@nominal power) Adjustable power (1 leading~1 lagging) factor THDi <3% <3% <3% <3% AC grid connection 3P+PE type Backup power (AC) Rated AC output 50000W 63000W 75000W 100000W power Max. AC apparent 60000VA 75600VA 90000VA...
  • Page 83 String monitoring Anti-PID function Optional Optional Optional Optional AFCI protection Optional Optional Optional Optional Display communication Display OLED+LED/APP RS485 Optional Optional Optional Optional WiFi Optional Optional Optional Optional General data Dimensions (W /H / 53.2*33.5*20.1(in) D) in mm Weight 294lb 294lb 309lb 309lb...
  • Page 84 Table 10.3 WIT 50/63/75/100K-AE-US specification Model WIT 50K-AE WIT 63K-AE WIT 75K-AE WIT100K-AE Specifications Battery data (DC) Continuous charging / 56700W 71400W 85100W 113500W discharging power Battery voltage range 750-1000V(for 3P3W ) Recommended battery voltage 768V Max. charging discharging current 75.6A 95.2A 113.5A...
  • Page 85 THDv Unbalanced load 100% three-phase unbalanced ≤110%,continuous; Overload capacity 110%~120%:10min >120%,200ms Switch time from on-grid to off-grid <200ms mode Switch time from off-grid to on-grid mode Efficiency Max. battery charge/discharge 98.20% 98.20% 98.20% 98.20% efficiency Protection devices Battery reverse protection DC surge protection Yes(Class II)...
  • Page 86 Relative humidity 0~100% Altitude 4000m 4000m 4000m 4000m Nighttime power consumption Standby power 250W 250W 250W 250W consumption Topology Transformerless Transformerless Transformerless Transformerless Cooling Smart air cooling Smart air cooling Smart air cooling Smart air cooling Protection degree IP66 IP66 IP66 IP66 5/10 years...
  • Page 87 Table 10.4 WIT 50/63/75/100K-HE-US specification Model WIT 50K-HE WIT 63K-HE WIT 75K-HE WIT100K-HE Specificatio Input data (DC) Max. recommended PV power (for module 109200W 124800W 156000W 156000W STC) Max. DC voltage 1100V 1100V 1100V 1100V Start-up voltage 195V 195V 195V 195V Nominal voltage 550V...
  • Page 88 Max. output current 120.3A/66.2A 151.6A/83.4A 180.5A/99.3A 240.7A/132.4A Power factor(@nominal >0.99 power) Adjustable power (1 leading~1 lagging) factor THDi <3% <3% <3% <3% AC grid connection 3P+PE/3P+N+PE type Stand alone power) Rated AC output 50000W 63000W 75000W 100000W power Max. AC apparent 60000VA 75600VA 90000VA...
  • Page 89 monitoring RCD detection AC short-circuit protection AC surge protection Yes(Class II) Yes(Class II) Yes(Class II) Yes(Class II) Ground fault monitoring Grid monitoring String monitoring Anti-PID function Optional Optional Optional Optional AFCI protection Optional Optional Optional Optional Display communication Display OLED+LED/APP RS485 Optional Optional...
  • Page 90 Table 10.5 WIT 50/63/75/100K-AU-US specification Model WIT 50K-AU WIT 63K-AU WIT 75K-AU WIT100K-AU Specificatio Battery data(DC) Continuous charging / 56700W 71400W 85100W 113500W discharging power Battery voltage range 750-1000V(for 3P3W ) Rated battery voltage 768V Recommended battery voltage 75.6A 95.2A 113.5A 151.3A BMS communication...
  • Page 91 THDv Unbalanced load 100% three-phase unbalanced ≤110%,continuous; Overload capacity 110%~120%:10min >120%,200ms Switch time from <20ms on-grid to off-grid Switch time from off-grid to on-grid Efficiency Max. battery charge/discharge 98.20% 98.20% 98.20% 98.20% efficiency Protection devices Battery reverse protection DC surge protection Yes(Class II)...
  • Page 92 Altitude 4000m 4000m 4000m 4000m Nighttime power consumption Standby power 250W 250W 250W 250W consumption Topology Transformerless Transformerless Transformerless Transformerless Cooling Smart air cooling Smart air cooling Smart air cooling Smart air cooling Protection degree IP66 IP66 IP66 IP66 5/10 years 5/10 years 5/10 years 5/10 years...
  • Page 93 Table 10.6 WIT 50/63/75/100K-HU-US specification Model WIT 50K-HU WIT 63K-HU WIT 75K-HU WIT100K-HU Specificatio Input data (DC) Max. recommended PV power (for module 109200W 124800W 156000W 156000W STC) Max. DC voltage 1100V 1100V 1100V 1100V Start-up voltage 195V 195V 195V 195V Nominal voltage 550V...
  • Page 94 Power factor(@nominal >0.99 power) Adjustable power (1 leading~1 lagging) factor THDi <3% <3% <3% <3% AC grid 3P+PE connection type Stand alone power) Rated AC output 50000W 63000W 75000W 100000W power Max. AC apparent 60000VA 75600VA 90000VA 120000VA power Rated output voltage 277V/480V Nominal AC 50/60 Hz...
  • Page 95 protection AC surge protection Yes(Class II) Yes(Class II) Yes(Class II) Yes(Class II) Ground fault monitoring Grid monitoring String monitoring Anti-PID function Optional Optional Optional Optional AFCI protection Optional Optional Optional Optional Display communication Display OLED+LED/APP RS485 Optional Optional Optional Optional WiFi Optional Optional...
  • Page 96: Decommissioning The Wit Inverter

    11. Decommissioning the WIT Inverter 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>...
  • Page 97: Warranty

    9. Damage due to force majeure, such as lightning, floods, storms, fire. In the event of a product malfunction or failure caused by the circumstance mentioned above, Growatt can provide paid maintenance services after conducting a fault diagnosis if required.
  • Page 98: Contact Us

    13. Contact Us If you have technical problems with our products, please contact Growatt for technical support. We require the following information 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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