Growatt Solar Pump Inverter 750W-5500W User Manual
Introduction
The solar pumping system diagram illustrates the flow: Solar Panel array connects to the Solar Pump Inverter. The inverter then powers the Pump, which draws water from a Groundwater source or Water Tank. The system can also connect to the Utility Grid. The output can be used for Irrigation or Animal Husbandry. The diagram shows arrows indicating the direction of power and water flow.
The manual uses symbols to denote electrical values and safety precautions. These include: Grounding Wire of Equipment (symbol: ⏚), AC Value (symbol: ~), DC Value (symbol: —), Phase (symbol: ⏐), and a warning symbol (symbol: ⓘ) indicating 'Before operating inverter, please read the instruction.' Another symbol (symbol: ⚠) with a 5-minute delay indicates 'In order to avoid electric shock, break off machine with PV terminal and AC terminal for at least 5 minutes, then contact the wire of machine output terminal and input terminal.' A final warning symbol (symbol: ⚠) states 'Warning: when machine works, the temperature of metal shell may be very high.'
This solar pump inverter switches power from solar panels and the grid to the AC power needed to control the pump. It features a Boost circuit for MPPT solar charging to maximize solar power and allows setting the priority of PV and utility grid input. It is suitable for submersible pumps, ground pumps, swimming pool pumps, and other pumps using three-phase asynchronous motors.
Features
- Rated power 750W to 5500W
- Inbuilt MPPT solar controller
- Inbuilt BOOST circuit for broader PV voltage range
- Automatic selection of photovoltaic and AC power
- IP65 protection level
- Built-in full protection and self-diagnosis
- Soft start function
- Comprehensive LCD and LEDs display real-time system status
- Remote monitoring through GPRS/4G (optional)
Product Overview
The Growatt Solar Pump Inverter features a front panel with: 1. LCD display, 2. LED indicators (POWER, ALARM, FAULT), 3. Function buttons, 4. AC input terminal, 5. PV input terminal, 6. Water level sensor port, 7. AC output terminal, and 8. GPRS communication port (optional).
When selecting an installation location, consider the following: Do not mount on flammable materials. Mount on a solid metal surface. Ensure the environment is shady and cool, avoiding direct sunlight. Install in a waterproof and dustproof box. Mount at eye level for easy LCD visibility. The inverter should be adhered to the wall vertically. Maintain sufficient clearance (e.g., ≥100cm above, ≥30cm to sides, ≥300cm below) for heat dissipation and wire access.
The mounting dimensions for different models are provided: Single phase 220V 750W-2.2kW and 3 phase 220V 750W-2.2kW models have dimensions of 252x220mm (WxH) with mounting holes at 220x220mm. Single phase 220V 4kW and 3 phase 380V 2.2kW-5.5kW models have dimensions of 272x230mm (WxH) with mounting holes at 220x260mm. Mounting is suitable for concrete or other non-combustible surfaces only.
A safety nut installation is depicted.
Installation
Unpacking and Inspection
Before installation, inspect the unit and package contents. The package should include: The unit (x1), User manual (x1), and Attachment (x1).
Wiring Introduction
The inverter features AC input, DC input, water level sensor connection terminals, GPRS (optional), and AC output terminals.
The terminal introduction table details the connections: PV (PV+, PV-), AC Input (L, N, PE), AC Output (1, 2, L, PE for 3PH; 1, L, PE for 1PH), COM terminal (1, 2 for water tank sensor 2; 3, 4 for water well sensor 1; 5, 6 are unused), and GPRS connection terminal (1: +5V, 2: TXD-232, 3: RXD-232, 4: GND).
Note that input socket polarity and AC output socket sequencing may differ between models. Risk of electric shock: disconnect solar panel, pump inverter AC and DC, and allow 5 minutes for internal capacitance discharge before any work.
Assemble DC Connector
To assemble the DC connector: Strip the cable (6-8mm), insert the bare wire into the core tube of the connector, crimp using a hex crimping die, and insert the core tube into the slot until it clicks. Tighten nuts to finish wiring.
Assemble AC Output Connector
For Growatt SPI 750-5500TL series, there are two AC output connector types. Type I (3-phase) uses AC connector 1, 2, L, PE for pump connection via 4 wires (U, V, W, PE). Type II (1-phase) uses AC connector L, 1, PE for pump connection via 3 wires (L, N, PE).
Assembly involves removing connector parts, guiding the pressure screw sealing and threaded sleeve over the cable, inserting stripped conductors into screw terminals (U, V, W, PE for Type I; L, N, PE for Type II), pushing the threaded sleeve into the socket element, screwing the pressure screw tightly, and finally inserting the connector into the inverter receptacle and locking the housing.
Assemble AC Input Connector
Similar to AC output, assembly involves preparing the connector parts, guiding the pressure screw sealing and threaded sleeve over the cable, inserting stripped conductors (L, N, PE) into the socket element's screw terminals, and securing the connector.
Push the threaded sleeve in to the socket element, screw the pressure screw tightly onto the threaded sleeve until it clicks. Insert the AC connection plug into the inverter receptacle and lock the housing.
Wiring of Water Level Sensor
The diagram shows the wiring of water level sensors. Water Level Sensor 2 connects to COM terminals 1 and 2 for the water tank. Water Level Sensor 1 connects to COM terminals 3 and 4 for the water well. The overall system includes Utility Grid, Solar Panel, AC Output, Water Pump, Water Tube, Water Tank, and Water Well.
Connect water level sensor 1 to detect water shortage. It connects to COM terminals 3 and 4. If sensor 1 detects low water level, the inverter delays output for 5s, then turns off pump protection. Normal operation resumes after water recovery and a 20s wait. Connect water level sensor 2 to detect if the water tank is full. It connects to COM terminals 1 and 2. If sensor 2 detects high water level, the inverter delays output for 5s and turns off. When the level drops below the set point, it waits 20s before restarting.
Recommended Diameter of Wire
The table provides recommended wire diameters (in mm²) for various Growatt SPI models based on output current, voltage, and cable length (30m to 210m).
| Model | Recommended output current(A) | Output voltage(V) | length≤ 30m | length≤ 60m | length≤ 90m | length≤ 120m | length≤ 150m | length≤ 180m | length≤ 210m |
| SPI 750TL-G2 | 5.1 | 1PH 220V | 1 | 1.5 | 2.5 | 4 | 4 | 4 | 6 |
| SPI 1500TL-G2 | 10.2 | 1PH 220V | 1.5 | 2.5 | 2.5 | 6 | 6 | 6 | 6 |
| SPI 2200TL-G2 | 14 | 1PH 220V | 2.5 | 2.5 | 4 | 6 | 6 | 6 | 6 |
| SPI 4000TL-G2 | 25 | 1PH 220V | 2.5 | 2.5 | 4 | 6 | 6 | 6 | 6 |
| SPI 750TL3-LV | 4.2 | 3PH 220V | 1 | 1.5 | 2.5 | 4 | 4 | 4 | 4 |
| SPI 1500TL3-LV | 7.5 | 3PH 220V | 1.5 | 2.5 | 2.5 | 4 | 4 | 6 | 6 |
| SPI 2200TL3-LV | 10 | 3PH 220V | 1.5 | 2.5 | 2.5 | 6 | 6 | 6 | 6 |
| SPI 4000TL3-LV | 16 | 3PH 220V | 1.5 | 2.5 | 2.5 | 6 | 6 | 6 | 6 |
| SPI 2200TL3-HV | 5.5 | 3PH 380V | 1.5 | 2.5 | 2.5 | 6 | 6 | 6 | 6 |
| SPI 4000TL3-HV | 9.5 | 3PH 380V | 1.5 | 2.5 | 2.5 | 6 | 6 | 6 | 6 |
| SPI 5500TL3-HV | 14 | 3PH 380V | 2.5 | 2.5 | 4 | 6 | 6 | 6 | 6 |
Units: mm²
Notice: The environment temperature for the recommended wire dimension should ≤50°C. For large-power wall-mounted models with multiple-channel DC input, the DC wire dimension for each channel should be selected according to the table.
Operation
Display Panel
The solar pump inverter uses an LCD operation panel with 3 LED lights (POWER, ALARM, FAULT) and 5 keys.
The panel includes: POWER (Green LED: inverter running), ALARM (Yellow LED: warning or terminal mode), FAULT (Red LED: system failure). Keys are: Operation/Stop Key (short press to start/stop control, 2s press to stop control), Confirm/Programming Key (short press to enter programming mode or confirm alterations, 2s press to enter programming menu), Increment Key (increase parameter/value, increase output frequency), Decrement Key (decrease parameter/value, decrease output frequency), and Return Key (return to initial display).
LCD Display Information
The LCD displays operation data, control parameters, and historical parameters. Information switches by pressing UP/DOWN keys. Displayed items include: Output frequency (Running/Set), Input PV voltage, Output voltage, Output current, and Relative value of rated power.
Parameters Setting
Work Mode Setting
The inverter supports three work modes: Manual (P00.01=0), Fully-automatic terminal (P00.01=1, default), and GPRS (P00.01=2, optional). Manual mode requires key operation to start/stop. Fully-automatic mode traces maximum power point when sunlight is strong. GPRS mode allows remote control via cellphone.
To set Work Mode: Enter parameter modification interface (long press Enter key). Navigate to P00 group, then P00.01. Press Enter key to view/edit. Use Down key to select value (0 for manual, 1 for terminal). Press Enter key to save.
Rated Parameters Setting for the Motor
Ensure wiring is correct before setting motor parameters. Parameters include: P02.01 Motor rated power, P02.02 Motor rated frequency, P02.04 Motor rated voltage, P02.05 Motor rated current. After setting, set P00.01=1 for automatic mode.
The process involves navigating to the parameter group (e.g., P02), selecting the specific parameter (e.g., P02.01 for Rated Power), editing the value using Up/Down keys, and pressing Enter to save. For example, to set Rated Power to 4.0kW, navigate to P02.01, use Up/Down keys to change the displayed value to 4.0kW, and press Enter to save. Similarly, for Rated Current (P02.05), edit the value and save.
After setting parameters, turn off DC and AC switches. Wait for screen to turn off, then turn on DC switch. The inverter will auto-start the pump after 60 seconds.
Warning: Do not change parameters randomly, as it may cause system malfunction.
Function Parameters
The Function Parameters table lists parameters like Operation code channel (P00.01), MAX. Output frequency (P00.03), MAX. running frequency (P00.04), Function restore parameter (P00.18), Rated power of asynchronous motor (P02.01), Rated frequency of asynchronous motor (P02.02), Rated voltage of asynchronous motor (P02.04), and Rated current of asynchronous motor (P02.05), along with their scope, introduction, and default values.
| SN | Name | Scope | Introduction | Default Value |
| P00.01 | Operation code channel | 0~2 | 0: keyboard operation code channel (LED is off) 1: terminal operation code channel (LED flashes) 2: communication operation code channel (LED is solid on) | 1 |
| P00.03 | MAX.Output frequency | P00.04~400.00 | Seting the maximum output frequency | 50.00Hz |
| P00.04 | MAX.running frequency | 0.00~ P00.03 | Seting the maximum running frequency | 50.00Hz |
| P00.18 | Function restore parameter | 0~1 | 0: No operation 1: Restore the default value | 0 |
| P02.01 | Rated power of asynchronous motor | 0.1 ~ 3000.0 | 0.1~3000.0kW | Model confirmation |
| P02.02 | Rated frequency of asynchronous motor | 0.01 ~ P00.03 | 0.01~P00.03 | 50.00Hz |
| P02.04 | Rated voltage of asynchronous motor | 0 ~ 1200V | 0~1200V | Model confirmation |
| P02.05 | Rated current of asynchronous motor | 0.8 ~ 6000A | 0.8~6000A | Model confirmation |
Troubleshooting
The inverter has complete protection. When a failure occurs, the inverter will take protective measures. The general protection is to stop the motor from running and forbid it to restart within a certain period.
| Code | Description | Possible Reasons | Countermeasures |
| Power off | No failure | W | |
| Inc OVP Dec OVP Con OVP | Overvoltage | Input voltage is too high | Check the voltage of solar array |
| Vbus low | Undervoltage | 1. Input voltage is too low; 2. Illumination intensity is too weak | Check the voltage of solar array |
| Inc OCP Dec OCP con OCP | Overcurrent | 1. The load of pump is too large; 2. The voltage of solar array is too low; 3. The motor wiring is too long | 1.Replace for a smaller pump; 2.Check voltage of solar array; 3.Shorten the wiring between inverter and motor |
| Overload Tel | Water pump is overload | Load is too large | Decrease maximum operation frequency |
| Overload VVVF | Inverter is overload | The inverter load is too large | Decrease power grade of water pump |
| IGBT shortcut | Module overcurrent | Output short circuit or grounding module damage | 1.Check the wiring 2.Get after-sells support |
| Inv Overtemp REC Overtemp | Module is overtemperature | 1. Air flue is blocked 2. Environment temperature is too high 3. The time of overload runing is too long. | 1. Clean air flue or improve ventilation 2.Degree the environment temperature |
| Scarce Phase Out | Output default phase | Equipment or circuit damage | Get after-sells support |
| Shortcut GND 1 | Grounding short circuit | The output line may be connected with ground | Check the wiring |
| Curr Test Fault | Current detection failure | 1.The control board connection is in poor contact 2.The hall component is damaged The magnifying circuit is abnormal | Get after-sells support |
| Lack load | Water pump conducts "dry-operation" | Water pump's connection wires are all open circuit. Water pump does not match inverter | 1. Check water level. 2. Check whether the water pump wiring condition and water pump power meet the requirements of inverter capacity |
| No Water | Water shortage | Water shortage warning | When water is provided, it can recover automatically |
| Water Full | Water full | Water full warning | When water level decreases, it can recover automatically |
| Com Fault | Communication failure | Device or circuit damage | Reset Get after-sells support |
Warning: Try to find out the failure reason before attempting a reset. If it can't reset or suffers failure again after reset, please try find out the reason first. Continuously resetting could damage the inverter.
Specifications
The specifications table details various Growatt SPI models (SPI 750TL-G2 to SPI 5500TL3-HV) across DC Input, AC Input, AC Output, Control Performance, Protection Functions, and Others. Key specifications include Max. DC voltage, Recommended MPPT voltage, Max. DC current, Input voltage, Rated input current, Input frequency, Rated output power, Rated output current, Output voltage, Output frequency, Motor type, display type (LCD), communication options (GPRS/WIFI), dimensions, net weight, operating temperature range (-25~60°C, with derating above 45°C), environmental protection rating (IP65), cooling (natural), altitude limit (3000m, with derating above 2000m), and relative humidity (0~100%).
| MODE | SPI 750TL-G2 | SPI 1500TL-G2 | SPI 2200TL-G2 | SPI 4000TL-G2 | SPI 750TL3-LV | SPI 1500TL3-LV | SPI 2200TL3-LV | SPI 4000TL3-LV | SPI 2200TL3-HV | SPI 4000TL3-HV | SPI 5500TL3-HV |
| DC INPUT | |||||||||||
| Max.DC voltage | 450V | 450V | 450V | 450V | 450V | 450V | 450V | 450V | 800V | 800V | 800V |
| Starting voltage | 80V | 80V | 80V | 80V | 80V | 80V | 80V | 80V | 220V | 220V | 220V |
| Recommended MPPT voltage | 100~400V | 100~400V | 100~400V | 100~400V | 100~400V | 100~400V | 100~400V | 100~400V | 220~750V | 220~750V | 220~750V |
| Max. DC current | 9A | 12A | 12A | 20A | 9A | 12A | 12A | 20A | 12A | 20A | 20A |
| Number of input channels | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 2 | 2 | 2 |
| AC INPUT | |||||||||||
| Input voltage | 1PH 220~240V (-15%~+10%) | 1PH 220~240V (-15%~+10%) | 1PH 220~240V (-15%~+10%) | 1PH 220~240V (-15%~+10%) | 3PH 380V (-15%~+10%) | 3PH 380V (-15%~+10%) | 3PH 380V (-15%~+10%) | ||||
| Rated input current | 9.5A | 16A | 24A | 38A | 9.5A | 16A | 24A | 38A | 6A | 14A | 20A |
| Input frequency | 47~63 Hz | 47~63 Hz | 47~63 Hz | 47~63 Hz | 47~63 Hz | 47~63 Hz | 47~63 Hz | 47~63 Hz | 47~63 Hz | 47~63 Hz | 47~63 Hz |
| AC input terminal | L,N, PE | L,N, PE | L,N, PE | L,N, PE | L,N, PE | L,N, PE | L,N, PE | L,N, PE | R,S,T,PE | R,S,T,PE | R,S,T,PE |
| AC OUTPUT | |||||||||||
| Rated output power | 750W | 1500W | 2200W | 4000W | 750W | 1500W | 2200W | 4000W | 2200W | 4000W | 5500W |
| Rated output current | 5.1A | 10.2A | 14A | 25A | 4.2A | 7.5A | 10A | 16A | 5.5A | 9.5A | 14A |
| Output wiring mode | 1P1L | 1P1L | 1P1L | 3P3L | 3P3L | 3P3L | 3P3L | 3P3L | 3P3L | 3P3L | 3P3L |
| Output voltage | 0~220V | 0~220V | 0~220V | 0~220V | 0~220V | 0~220V | 0~220V | 0~220V | 0~380V | 0~380V | 0~380V |
| Output frequency | 0~50/60Hz | 0~50/60Hz | 0~50/60Hz | 0~50/60Hz | 0~50/60Hz | 0~50/60Hz | 0~50/60Hz | 0~50/60Hz | 0~50/60Hz | 0~50/60Hz | 0~50/60Hz |
| CONTROL PERFORMANCE | |||||||||||
| Control mode | V/F | V/F | V/F | V/F | V/F | V/F | V/F | V/F | V/F | V/F | V/F |
| Motor type | Asynchronous motor (1PH 220V) | Asynchronous motor (1PH 220V) | Asynchronous motor (1PH 220V) | Asynchronous motor (1PH 220V) | Asynchronous motor (3PH 220V) | Asynchronous motor (3PH 220V) | Asynchronous motor (3PH 220V) | Asynchronous motor (3PH 220V) | Asynchronous motor (3PH 380V) | Asynchronous motor (3PH 380V) | Asynchronous motor (3PH 380V) |
| PROTECTION FUNCTIONS | |||||||||||
| Output overcurrent | YES | YES | YES | YES | YES | YES | YES | YES | YES | YES | YES |
| Output overlode | YES | YES | YES | YES | YES | YES | YES | YES | YES | YES | YES |
| Output short-circuit | YES | YES | YES | YES | YES | YES | YES | YES | YES | YES | YES |
| Dry/Overflow protection | YES | YES | YES | YES | YES | YES | YES | YES | YES | YES | YES |
| OTHERS | |||||||||||
| Display | LCD | LCD | LCD | LCD | LCD | LCD | LCD | LCD | LCD | LCD | LCD |
| Comunication | GPRS/WIFI (OPTION) | GPRS/WIFI (OPTION) | GPRS/WIFI (OPTION) | GPRS/WIFI (OPTION) | GPRS/WIFI (OPTION) | GPRS/WIFI (OPTION) | GPRS/WIFI (OPTION) | GPRS/WIFI (OPTION) | GPRS/WIFI (OPTION) | GPRS/WIFI (OPTION) | GPRS/WIFI (OPTION) |
| Certificate Standard | CE | CE | CE | CE | CE | CE | CE | CE | CE | CE | CE |
| Dimensions (W×D×H), mm | 370×335×135 | 370×335×135 | 370×335×135 | 370×335×135 | 450×365×150 | 450×365×150 | 450×365×150 | 450×365×150 | 450×365×150 | 450×365×150 | 450×365×150 |
| Net weight, kg | 9.5 | 9.5 | 9.5 | 9.5 | 16.5 | 16.5 | 16.5 | 16.5 | 16.5 | 16.5 | 16.5 |
| Operation temperature range | -25~60°C (with derating above 45°C) | -25~60°C (with derating above 45°C) | -25~60°C (with derating above 45°C) | -25~60°C (with derating above 45°C) | -25~60°C (with derating above 45°C) | -25~60°C (with derating above 45°C) | -25~60°C (with derating above 45°C) | -25~60°C (with derating above 45°C) | -25~60°C (with derating above 45°C) | -25~60°C (with derating above 45°C) | -25~60°C (with derating above 45°C) |
| Environmental Protection Rating | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 |
| Cooling | Natural cooling | Natural cooling | Natural cooling | Natural cooling | Natural cooling | Natural cooling | Natural cooling | Natural cooling | Natural cooling | Natural cooling | Natural cooling |
| Altitude | 3000m (with derating above 2000m) | 3000m (with derating above 2000m) | 3000m (with derating above 2000m) | 3000m (with derating above 2000m) | 3000m (with derating above 2000m) | 3000m (with derating above 2000m) | 3000m (with derating above 2000m) | 3000m (with derating above 2000m) | 3000m (with derating above 2000m) | 3000m (with derating above 2000m) | 3000m (with derating above 2000m) |
| Relative humidity | 0~100% | 0~100% | 0~100% | 0~100% | 0~100% | 0~100% | 0~100% | 0~100% | 0~100% | 0~100% | 0~100% |
