SP2 Single Phase to Three Phase Solar Pump Inverter
220V single-phase input to stable 220V three-phase output for 0.75-3kW pumps. Use efficient three-phase pumps on farms, wells, and rural sites without three-phase grid power.
Built-in Phase Converter
Converts 220V single-phase input to 220V three-phase output without a separate phase converter cabinet.
Superior Frequency Stability (+/-0.5Hz)
Stable output helps protect pump motors, reduce vibration, and keep flow more consistent.
Ultra-Wide MPPT Range (170-800V)
Works with flexible solar panel strings and adjusts pump speed as sunlight changes.
Plug-and-Play Installation
Connect PV input, optional grid input, and three-phase pump output. The controller manages phase conversion and MPPT automatically.
Warranty
3 Years
PV Range
170-800V
Support
Free Setup
5,000+
Systems Installed
23+
Countries Served
99.5%
System Uptime
15+
Years Experience
50,000+
Units Supplied
ISO
Certified Production
Quick Decision
Choose SP2 when the pump is three-phase but the site only has 220V single-phase power
SP2 is not a general 220V inverter page. It solves a specific buyer problem: keeping a three-phase pump while using single-phase grid input or solar input.
3-Phase Pump + 220V Single-Phase Site
Use SP2 to convert the site power path to a stable 220V three-phase pump output.
Solar Upgrade for Existing Pumps
Add solar pumping to a small three-phase pump without replacing the motor.
Small Irrigation & Village Wells
Best for 1-4HP pump applications where three-phase grid infrastructure is unavailable.
Not for 380V or Large Pumps
For 380V three-phase or industrial loads, move to SP4.
Installation Video
1-Minute Installation Demo
Watch how easy it is to install the SP2 controller. No complex programming is needed for standard pump matching.
Installation Steps Overview
- Step 1:Connect solar panel DC input (170-800V)
- Step 2:Connect 220V single-phase AC grid input (optional)
- Step 3:Connect 3-phase pump motor output
- Step 4:Power on. The controller automatically detects and starts.
Pro tip: Send the pump nameplate before ordering. SolarSeeker engineers confirm the SP2 model, PV array, and wiring path before shipment.
Application Fit
When do you need the SP2 phase converter?
SP2 is the right path for buyers who need single phase to three phase solar pump inverter control in small pump systems.
You have a 3-phase pump + single-phase power
Already purchased a three-phase submersible pump but only have 220V single-phase power supply? SP2 converts your single-phase power to stable three-phase output without an external phase converter.
You want a cost-effective alternative to replacing the pump
Three-phase pumps in the 1-4HP range are often efficient and durable. SP2 lets dealers and contractors keep the existing pump plan while solving the power mismatch.
Rural areas without three-phase infrastructure
In remote agricultural or residential areas, three-phase utility power is often unavailable. SP2 allows higher-efficiency three-phase motors to run on the local 220V single-phase supply or solar array.
You are upgrading an existing grid-based pump to solar
SP2 can help add solar power to an existing three-phase pump system, reducing electricity cost while keeping compatibility with the current motor.
Do not need SP2? Choose these alternatives
If you have a 220V single-phase pump
If you have a 220V three-phase pump and three-phase input
Compare with SP3 220V three phase solar pump inverter.
If you have a 380V three-phase pump
Technical Parameters
SP2 technical specifications
Core parameters for phase conversion applications. Send the pump nameplate if current, voltage, or motor wiring is uncertain.
| Input Voltage (AC Grid) | 220V Single-Phase (180-280V tolerance) |
| Input Voltage (Solar DC) | 170-800V DC |
| Output Voltage | 220V Three-Phase |
| MPPT Range | 170-800V (99% efficiency) |
| Frequency Stability | +/-0.5Hz (5x better than competitors) |
| Motor Power Range | 0.75-3kW (1-4HP) |
| Protection Features | Dry run, overvoltage, overcurrent, thermal, phase sequence |
| Protection Rating | IP20 (indoor installation) |
| Operating Temperature | -10C to +50C |
| Warranty | 3 Years Standard Warranty |
Model Selection
SP2 model selection guide
Choose the right SP2 model for your three-phase pump application.
| Model | Motor Power | Input Current | Output Current | Solar Panel | Application |
|---|---|---|---|---|---|
| SP2-0.75 | 1HP (0.75kW) | 4.5A | 3.4A | 1.5kW | Small residential wells |
| SP2-1.5 | 2HP (1.5kW) | 8.0A | 6.8A | 3.0kW | Residential/light agriculture |
| SP2-2.2 | 3HP (2.2kW) | 11.5A | 10.0A | 4.4kW | Medium agriculture/irrigation |
| SP2-3.0 | 4HP (3kW) | 15.2A | 13.6A | 6.0kW | Large agriculture/commercial |
Sizing Recommendation
Recommended solar panel wattage = motor power x 2.0 for phase conversion systems. Example: for a 2.2kW motor, use a 4.4kW solar array for optimal performance.
Quick Inquiry
Get an SP2 model recommendation in 1 working day
Send the pump nameplate and site power condition. SolarSeeker confirms whether SP2 is the right path or whether SP1, SP3, or SP4 is safer.
Best for distributors, pump dealers, EPC contractors, and irrigation projects.
Comparison
SP2 vs. traditional phase converters
Why SP2 is the better choice when the project is a solar pump application, not a general workshop motor load.
| Feature | SP2 Solar Controller | Traditional Phase Converter | Rotary Phase Converter |
|---|---|---|---|
| Frequency Stability | +/-0.5Hz | +/-2Hz | +/-3Hz |
| Solar MPPT | Built-in 170-800V | Not Available | Not Available |
| Installation Time | 1 Minute | 30-60 Minutes | 2-4 Hours |
| Cost (Total System) | $599-$999 | $800-$1500+ | $1200-$2500+ |
| Protection Features | 6-in-1 Protection | Basic (2-3) | Minimal |
| Energy Efficiency | 99% | 85-90% | 70-80% |
| Grid Voltage Tolerance | 180-280V | 200-240V | 210-230V |
Before Quotation
What pump information should you send?
For SP2, the pump phase and voltage matter more than usual. A clear nameplate photo prevents wrong model selection and avoids site commissioning problems.
Pump voltage & phase
Confirm 220V three-phase output is correct.
Rated power/current
Choose SP2-0.75, 1.5, 2.2, or 3.0.
Total head & flow
Check whether the pump operates in the right range.
PV panel wattage
Size around motor power x 2.0.
Fast recommendation path
- 1Send a pump nameplate photo and project country.
- 2SolarSeeker checks voltage, phase, current, head, and flow.
- 3You receive the SP2 model, PV array suggestion, and wiring notes.
Related Products
Compare SP2 with the correct SolarSeeker product path
SP1 220V Single Phase
For 220V single-phase pumps. No phase conversion needed.
Compare SP1
SP3 220V Three Phase
For 220V three-phase pump systems where phase conversion is not required.
Compare SP3
SP4 380V Three Phase
For 380V industrial pumps and higher-power irrigation systems.
Compare SP4
Solar Pump Cabinet
For outdoor protection, wiring integration, and OEM project builds.
Cabinet optionsFAQ
SP2 single phase to three phase solar pump inverter FAQ
What is the SP2 solar pump inverter used for?
SP2 is used when a project has a 220V three-phase pump but the site only has 220V single-phase power or solar input. It converts the power path and controls the pump with MPPT solar pumping logic.
Can SP2 run a 380V three-phase pump?
No. SP2 outputs 220V three-phase. For 380V three-phase pumps, use SP4 380V three phase solar pump inverter.
What SP2 model should I choose for a 2.2kW pump?
For a 2.2kW or 3HP 220V three-phase pump, choose SP2-2.2. The recommended solar panel capacity is about 4.4kW, depending on head, flow, and local sunlight conditions.
Is SP2 the same as a traditional phase converter?
No. A traditional phase converter only creates three-phase output. SP2 is designed for solar pump systems, so it also includes MPPT control, pump protection, frequency control, and automatic operation logic.
Can SP2 work with grid and solar together?
SP2 supports solar DC input and optional 220V single-phase AC grid input. The final wiring path should be confirmed from the pump nameplate and project conditions before installation.
What information should I send for an SP2 quotation?
Send a clear pump nameplate photo, pump power, voltage, phase, rated current, total head, flow requirement, cable distance, solar panel plan, and project country. This lets SolarSeeker confirm whether SP2 is correct.
Next Step
Ready to solve your phase conversion challenge?
Send the pump nameplate and site power condition. SolarSeeker will confirm the SP2 model, PV array size, wiring path, and whether another SP series model fits better.