SP4 380V Three Phase Solar Pump Inverter
SP4 is the SolarSeeker inverter path for 380V three phase pump projects. It is built for farm irrigation, deep wells, long pipe runs, water treatment, flood control, and other sites where a small 220V drive is no longer the right fit.
Use SP4 when the pump nameplate shows 380V three phase output and the project needs wider DC input headroom, fewer complex settings for installers, and a practical fault display for field service.
Quick Decision
SP4 is for 380V three phase pumps and higher-power solar pumping projects
If the pump is 380V three phase, SP4 is usually the first SolarSeeker model path to check. If the pump is 220V, start from SP1, SP2, or SP3 instead.
Choose SP4 for 380V pump motors
Use SP4 when the pump output requirement is 380V three phase and the project needs an inverter for direct solar pumping.
Use the 900V DC headroom
The wide DC input range gives engineers more room for PV string design on higher-power systems.
Built for hot field conditions
SP4 is specified for operation up to 50°C, useful for farm, desert, cabinet, and outdoor pump rooms.
Field Installation
A 380V pump project needs more than a model number
For SP4 projects, SolarSeeker checks the pump nameplate, PV array voltage, cable distance, cabinet environment, dry-run protection, and installer service access before shipment. This is especially important for deep wells, irrigation blocks, flood control, and long daily runtime.
Pump and pipe load
Confirm rated current, head, flow, pipe length, and whether the pump starts under heavy pressure.
PV and cabinet design
Check string voltage, surge protection, wiring access, ventilation, and whether an outdoor cabinet is needed.
Why SP4
What makes SP4 easier to sell and service than a generic solar pump inverter?
Most 380V solar pump inverters can start and run a pump. The difference is what happens during weak sun, hot cabinets, wrong sizing, and field troubleshooting.
Up to 900V DC input
SP4 gives engineers a wider DC input ceiling than common 800V-class units, helping large PV arrays keep better voltage headroom.
Start waiting function
The inverter can wait until solar energy is strong enough before restarting, reducing repeated start-stop cycles in the morning or under moving clouds.
Simpler parameter setup
The operating interface keeps most complex parameters away from daily installation work, so dealers and technicians spend less time searching menus.
50°C operation
The higher operating temperature rating gives more margin for Southeast Asia, desert farms, pump rooms, and outdoor cabinet installations.
Readable fault display
Field teams can identify common conditions such as undervoltage, overvoltage, dry run, well empty, and tank full from clear display codes.
Cabinet project support
For higher-power installations, SolarSeeker can support inverter and cabinet matching instead of leaving the dealer to solve wiring and protection alone.
Model Selection
Choose the SP4 model from pump power and rated current
Use motor kW as the first filter, then confirm rated current, pump curve, cable distance, PV string design, and site temperature before ordering.
| Model path | Typical motor range | Common application | Before quote |
|---|---|---|---|
| SP4007 / SP4011 | 5.5-11kW pump projects | Small farm irrigation, orchard water, livestock water, pond or transfer pumps | Confirm pump current and PV string voltage |
| SP4015 / SP4022 | 15-22kW inverter class | Flood control, irrigation pumps, village supply, commercial pumping | Check cabinet ventilation and protection devices |
| SP4030 / SP4075 | 30-75kW high-power pumps | Large orchards, deep wells, high-flow irrigation, industrial water transfer | Review cable length, pressure, cabinet layout, and service access |
| SP4110 / SP4200+ | 110-250kW project range | Center pivot irrigation, municipal pumping, mining, water treatment | Treat the inverter, cabinet, PV field, and pump line as one system |
Selection note: for high-power 380V pumps, do not copy another project’s model only from kW. Send the pump nameplate and site data so SolarSeeker can check current, PV voltage, protection settings, and cabinet needs.
Product Comparison
SP4 compared with common 380V solar pump inverter alternatives
GD100-PV and SI23 are useful references because many buyers already know them. SP4 covers the same core pumping functions, then adds more room for field installation and daily service.
| Buyer question | SolarSeeker SP4 | Typical GD100-PV / SI23 path |
|---|---|---|
| How much DC voltage margin is available? | Up to 900V DC input for wider PV string design. | Often treated as an 800V-class DC input choice. |
| What happens under weak sunlight? | Start waiting function helps reduce repeated start-stop cycles. | May require more parameter tuning or site adjustment. |
| How difficult is commissioning? | Simplified interface reduces complex daily parameters for installers. | More menu work can slow down dealer and installer handover. |
| Can it handle hot pump rooms? | Operation up to 50°C. | Commonly specified around 45°C. |
| Is support available for full project builds? | SolarSeeker can check inverter, pump, PV array, protection, and cabinet layout together. | Often purchased as a drive only, leaving project integration to the buyer. |
Project Proof
SP4 cases across small farm pumps and high-power irrigation systems
The right SP4 model depends on the pump load and site risk. These project examples show how the same 380V inverter path can cover different power levels.
Egypt / SP4007
5.5kW olive garden irrigation
A 7.5kW inverter matched to a 5.5kW 380V pump with a 900V DC upper MPPT range.
Philippines / SP4015
11kW flood-prevention pump
A 15kW inverter path for a public pumping project with installer and service requirements.
Mexico / SP4075
55kW lemon orchard pump
A 75kW inverter selected around pump current, pressure, pipework, and PV string plan.
Paraguay / SP4200
185HP center pivot irrigation
A 200kW cabinet project where layout, protection, and service access were part of the engineering decision.
Before You Order
What should you send for SP4 sizing?
A 380V pump project should be checked before the inverter ships. These details help SolarSeeker recommend the right SP4 model, PV array direction, cabinet protection, and basic settings.
Pump nameplate
Voltage, phase, kW/HP, rated current, frequency, and pump type.
Water demand
Head, flow, pipe distance, water source, and daily runtime target.
PV module data
Panel wattage, Voc, Vmp, planned series/parallel layout, and available space.
Site environment
Temperature, dust, humidity, cabinet location, cable length, and service access.
SP4 quotation path
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1
Send pump and site data
A photo of the pump nameplate is usually the fastest starting point.
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2
SolarSeeker checks the model path
We check SP4 model size, PV voltage, cabinet needs, and protection logic.
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3
You receive a practical recommendation
The reply can include inverter model, PV array direction, and cabinet notes.
Related Product Paths
Check the correct SolarSeeker path before you quote
SP4 is the 380V inverter model page. Use the related pages below when the buyer needs a category view, cabinet build, 220V alternative, or full irrigation solution.
380V Solar Pump Inverter
Category page for 380V three phase inverter selection.
Solar Pump Cabinet
Useful for outdoor, dusty, high-power, and protection-heavy SP4 projects.
SP3 220V Three Phase
Use this path when the pump is 220V three phase instead of 380V.
Solar Irrigation System
For project buyers who need pump, inverter, PV array, and installation planning together.
FAQ
SP4 380V three phase solar pump inverter FAQ
What is SP4 used for?
SP4 is used for 380V three phase solar pump systems. Typical projects include farm irrigation, deep wells, water treatment, flood control, industrial transfer, and high-flow water supply.
Can SP4 run a 220V pump?
SP4 is not the first choice for 220V pumps. For 220V single phase pumps use SP1, for single-to-three phase conversion use SP2, and for 220V three phase pumps use SP3.
Why does the 900V DC input range matter?
A higher DC input ceiling gives engineers more room when arranging PV modules in series. That can simplify wiring and provide better voltage headroom on large 380V pump systems.
Does SP4 need a solar pump cabinet?
Not every SP4 project needs a complete cabinet, but many outdoor or high-power sites benefit from cabinet-level protection, ventilation, surge protection, service access, and cleaner wiring.
What information is needed for an SP4 quotation?
Send the pump nameplate, head and flow requirement, water source, cable distance, site temperature, PV module data, and any cabinet or protection requirement. SolarSeeker can then check the model and PV array direction.
How does SP4 reduce repeated starting under weak sunlight?
SP4 includes a start waiting function. When solar energy is not strong enough, the inverter can wait before restarting, which helps reduce unnecessary start-stop cycles in changing sunlight.
Before Quotation
Send These Details Before Quotation
SP4 model selection should be checked against pump current, PV input and field protection. This is especially important for deep wells and larger irrigation systems.
Confirm SP4 size from rated current, not only kW
Check PV input and cabinet needs before shipment
Suitable for distributors and EPC teams quoting larger systems
SP4 pump nameplate
Send 380V three phase pump power, rated current, frequency and motor nameplate photo.
Head and flow target
Well depth, pipe distance, elevation, pressure and daily water target help confirm the system path.
PV array design
Panel power, Voc, Vmp, quantity and string layout must stay inside SP4 input limits.
Cabinet or inverter only
Tell us if you need only SP4, or also cabinet, breakers, wiring, sensors and protection parts.
Site protection level
Dust, heat, rain, humidity, cable distance and maintenance access affect cabinet and installation choices.
Project role and schedule
Dealer stock, EPC delivery, farm project or OEM order affects documents, packing and support.
Simple message format: SP4 pump nameplate + rated current + head/flow + PV array + cabinet need + quantity. If some data is missing, send what you have first and SolarSeeker can help check the rest.
Planning a 380V pump project?
Send the pump nameplate and basic site details. SolarSeeker will help confirm the SP4 model, PV array direction, protection needs, and whether a cabinet should be quoted with the inverter.