SP4 380V Three Phase Solar Pump Inverter
Industrial MPPT inverter for 380V three-phase pumps in large irrigation, deep wells, commercial buildings, mining, water treatment, and municipal pumping projects.
5,000+
Systems Installed
23+
Countries Served
99.5%
System Uptime
15+
Years Experience
50,000+
Units Supplied
ISO
Certified Production
Quick Decision
Choose SP4 when the project uses a 380V three-phase pump or needs industrial-scale solar pumping
SP4 is the 380V industrial path in the SolarSeeker SP series. It is built for larger pump power, long operating hours, field maintenance, and cabinet-level project integration.
380V Three-Phase Pump
Use SP4 for 380V three-phase pump motors in irrigation and industrial pumping.
High Head or Large Flow
Fits deep wells, long pipelines, large irrigation blocks, and municipal systems.
Field Maintenance Matters
The 111-777 display code system helps technicians identify faults quickly.
Not for Small 220V Pumps
Installation Video
See how SP4 installation works
Watch the step-by-step wiring guide. For industrial projects, SolarSeeker still recommends confirming the pump nameplate, cabinet design, and protection settings before commissioning.
Connect Solar Panels
Wire the PV array to DC input.
Connect Pump Motor
Wire AC output to 380V three-phase pump.
Check Parameters
Confirm rated current, head, and protection settings.
Start Pumping
Monitor flow, current, and fault codes.
Fault Diagnosis Display
SP4 parameter and fault code display images
These original display images help field teams understand common protection states without opening high-voltage panels or guessing from unclear error messages.
Low Frequency Fault
Inverter output frequency below 10Hz for over 60 seconds.
Solution: Check solar panel connection and sunlight intensity.
Dry Run Protection
Pump current below dry-run protection threshold.
Solution: Verify water source availability and pump submersion depth.
Under Voltage Fault
DC or AC input voltage below inverter rated voltage.
Solution: Increase solar panel array or check panel wiring connections.
Over Voltage Fault
DC or AC input voltage exceeds inverter rated voltage.
Solution: Reduce solar panel series count or verify panel specifications.
Water Tank Full
Float switch signals tank is full for over 5 seconds.
Status: System auto-paused to prevent overflow.
Water Well Empty
Water source empty for over 5 seconds, detected by X3 sensor.
Solution: Wait for water source replenishment or check water level sensor.
Industrial Applications
Built for large-scale industrial operations
SP4 handles high-power pumping challenges in agriculture, commercial buildings, municipal systems, and industrial facilities.
Large-Scale Agriculture
- 500+ acre irrigation systems
- Deep well pumping over 200m
- Multiple pump arrays
Commercial Buildings
- High-rise water supply
- HVAC cooling systems
- Fire suppression systems
Industrial Processing
- Water treatment plants
- Mining operations
- Manufacturing facilities
Model Selection
Choose your SP4 model
Select the right controller based on 380V three-phase pump motor power and project conditions.
| Model | Motor Power | Recommended Solar (kW) | Typical Applications |
|---|---|---|---|
| SP4R75 | 0.75kW (1HP) | 1.5kW | Small commercial, multi-unit residential |
| SP4-1.5 | 1.5kW (2HP) | 2.5kW | Medium irrigation, small factory |
| SP4-2.2 | 2.2kW (3HP) | 3.5kW | Large farm, commercial building |
| SP4-4.0 | 4.0kW (5HP) | 6.0kW | Large irrigation, water treatment |
| SP4-7.5 | 7.5kW (10HP) | 12kW | Industrial, large-scale agriculture |
| SP4-15 | 15kW (20HP) | 24kW | Large industrial, mining, municipal |
| SP4-30+ | 30-250kW | 45-375kW | Mega projects, custom solutions |
Industrial sizing note
Recommended solar capacity depends on pump power, head, flow, cable distance, daily water demand, and region. For SP4-30+ projects, request a custom selection sheet before ordering.
Industrial Quote
Get an SP4 model and cabinet recommendation
Send the pump nameplate, head, flow, and site conditions. SolarSeeker checks SP4 model, PV array, protection settings, and whether a solar pump cabinet is needed.
Best for EPC contractors, irrigation projects, factories, mining, municipal water, and OEM partners.
Technical Comparison
Why SP4 outperforms common alternatives
The original comparison table is preserved and rewritten for cleaner WordPress display.
| Feature | SolarSeeker SP4 | Competitor A | Competitor B |
|---|---|---|---|
| Output Voltage | 380V Three-Phase | 380V | 380V |
| Frequency Stability | +/-0.5Hz | +/-1.5Hz | +/-2.0Hz |
| Input DC Voltage | 270-800V | 270-600V | 250-450V |
| MPPT Range | 270-800V | 270-400V | 280-450V |
| Power Range | 0.75-250kW | Up to 200kW | Up to 150kW |
| MPPT Efficiency | >99% | 96-98% | 95-97% |
| Fault Diagnosis | Simple 111-777 Codes | Complex E01-E50 | Manual Testing |
| Operating Temp. | -20C to +50C | -10C to +45C | 0C to +40C |
Before Quotation
What data should you send for SP4 sizing?
SP4 projects are high-power systems, so model selection should include pump data, site conditions, protection design, and cabinet layout.
Pump nameplate
Power, voltage, phase, current, frequency.
Hydraulic demand
Head, flow, well depth, pipe distance.
PV array plan
Panel wattage, series/parallel plan, site sunlight.
Cabinet environment
Outdoor, desert, coastal, dusty, humid, or indoor.
Industrial selection path
- 1Send the pump nameplate, head, flow, and project country.
- 2SolarSeeker checks SP4 model, PV capacity, protection settings, and cabinet need.
- 3You receive the model recommendation, solar array suggestion, and wiring notes.
Related Products
Compare SP4 with the correct SolarSeeker product path
380V Solar Pump Inverter
Voltage category page for 380V pump selection and SP4 path.
Open category
SP3 220V Three Phase
For 220V three-phase commercial pump systems.
Compare SP3
Solar Pump Cabinet
For outdoor protection, wiring integration, and OEM industrial builds.
Cabinet optionsSolar Irrigation System
Application path for large irrigation and farm water projects.
View solutionFAQ
SP4 380V three phase solar pump inverter FAQ
What is SP4 used for?
SP4 is used for 380V three-phase pump systems that need industrial solar pumping control. It fits large irrigation, deep wells, mining, commercial buildings, water treatment, and municipal pumping projects.
Can SP4 run a 220V pump?
SP4 is designed for 380V three-phase pumps. For 220V pump systems, compare SP1, SP2, and SP3 before ordering.
What SP4 model should I choose for a 15kW pump?
For a 15kW or 20HP 380V three-phase pump, use SP4-15 as the starting point. Final selection should confirm rated current, head, flow, cable distance, and solar array size.
Does SP4 need a solar pump cabinet?
For outdoor, desert, coastal, dusty, humid, or high-power installations, a solar pump cabinet is strongly recommended. It helps integrate protection, wiring, switching, ventilation, and monitoring.
What do the SP4 111-777 fault codes mean?
The display codes show common protection or system states, such as low frequency, dry run, under voltage, over voltage, water tank full, and water well empty. The page images show each code and field action.
What information should I send for an SP4 quotation?
Send the pump nameplate, pump power, voltage, phase, rated current, head, flow, well depth, cable distance, PV panel plan, cabinet environment, and project country.
Next Step
Ready to power your industrial pumping system?
Send the pump nameplate and project data. SolarSeeker will confirm the SP4 model, PV array size, protection settings, and cabinet configuration.