380V Solar Well Pump Systems
380V Solar Pump Inverters for Deep Well and Large Irrigation Projects
Not every solar pumping project fits a 220V unit. If your pump runs on a 380V three-phase motor — or your site demands higher flow, deeper lift, or longer cable runs — this is where the selection process really starts.
This page covers 380V solar pump inverter systems for deep wells, large farm irrigation, industrial water transfer, desert water supply, EPC contracts, and high-power off-grid pump installations.
380V
Three Phase Output
SP4
Main Product Line
250kW
High Power Range
MPPT
Solar Pump Control
5,000+
Systems Installed
23+
Countries Served
99.5%
System Uptime
15+
Years Experience
50,000+
Units Supplied
ISO
Certified Production
When to Go 380V
When does a solar well pump need 380V three-phase power?
The answer is simpler than it sounds: if the pump motor is rated for 380V three-phase, you need a 380V inverter. Beyond voltage, factors like total dynamic head, cable distance, motor power, and daily water demand all push a project out of 220V territory.
That’s why searches for terms like “water pump for solar,” “solar well pump system,” or “off-grid water well pump” often end up here. The product choice depends on real site data — voltage, phase, kW, head, and flow — not just a broad pump category.
This page helps you confirm whether a 380V system is the right fit, and routes confirmed projects to the SP4 inverter, the IP65 solar pump cabinet, the submersible pump selector, or directly to our engineering team for sizing.
Deep Well Pump Loads
High lift, long cable runs, and continuous duty hours are where 380V three-phase motors earn their keep.
Large Irrigation
Field irrigation that runs daily and covers real acreage needs a pump system that can keep up, reliably.
Industrial Pump Systems
Water transfer, process water, commercial buildings, and municipal supply all run on three-phase motors as standard.
Solar PV Operation
SP4 takes DC from your PV array and converts it to a controlled 380V three-phase AC output for the pump motor.
Our Main 380V Product
Most 380V pump projects start with the SP4
The SP4 is SolarSeeker’s core 380V three-phase solar pump inverter. If your pump is three-phase and you’re running it from solar panels, SP4 is almost certainly what you need — but confirm the details before ordering.
Recommended Product
SP4 — 380V Three Phase Solar Pump Inverter
SP4 is built for 380V three-phase pump motors in deep wells, large irrigation schemes, commercial water systems, and industrial pumping. If you need a high-power water pump running on solar, this is the inverter to start with.
- 380V three-phase output matches industrial pump motors
- Built-in MPPT control for direct solar PV operation
- Covers deep wells, farm irrigation, and EPC projects
- Compatible with IP65 cabinet and field accessories
220V or 380V?
How to tell whether your project needs a 380V solar pump inverter
Voltage, motor type, well depth, and project scale all point you toward the right product. Use this table to find where your situation fits — and which page to go to next.
| Buyer Situation | Usually a 220V Project | Usually a 380V / SP4 Project | Best Next Page |
|---|---|---|---|
| Pump motor | Small 220V single-phase or 220V three-phase pump | 380V three-phase well pump or industrial motor | SP4 |
| Power demand | Home, small farm, low to medium daily flow | High flow, high head, continuous irrigation, or industrial duty | Engineer sizing |
| Well depth | Moderate head and shorter cable distance | Deep well with high head and long cable runs | Pump selection |
| Project type | Residential wells and small farms | EPC contracts, large farms, desert sites, municipal or industrial pumping | Cabinet |
| Search intent | solar well pump, small water pump for solar | 380V solar pump inverter, industrial solar water pumping, deep well pump system | Full catalog |
Common Search Terms, Answered Honestly
Popular pump searches — and what they actually mean for 380V buyers
Broad search terms bring in a wide range of buyers. Here’s how each one connects to the 380V selection decision, rather than just matching keywords.
Broad Traffic Term
water pump for solar
A solar-powered pump needs the right voltage, phase, and inverter match. Without those details, “water pump for solar” is too broad to source correctly.
Pump Buyer Term
well pump
A well pump becomes a 380V three-phase project once the depth, head, or flow demand goes beyond what a small home system can handle.
Commercial Term
deep well pump
Deep wells typically require stronger motors, higher head ratings, and inverter capacity that only the SP4 range can deliver.
Application Term
solar irrigation system
Large irrigation projects are one of the clearest use cases for 380V three-phase solar pumping — the daily water volumes simply demand it.
Where SP4 Gets Used
Applications where a 380V solar well pump system is the right call
These are projects where entry-level solar pump products hit their limits. Each one is worth a proper SP4 evaluation before sizing.
Large Farm Irrigation
Farms that depend on consistent daily water output need more than a basic pump. A 380V solar inverter can drive the three-phase motors behind irrigation pivots, canals, reservoirs, and field transfer lines.
Match SP4
Deep Well Water Supply
Getting deep well selection right requires real pump data — total head, flow rate, cable length, and motor current. Sizing from nameplate kW alone is where most mistakes happen.
Pump selection
Industrial Water Pumping
Factories, processing facilities, commercial buildings, and municipal supply lines all run on three-phase motors. A 380V solar VFD keeps that motor compatible with your PV array without a separate grid connection.
Talk to an engineerField-Proven Results
Real SP4 projects — not stock photos
SolarSeeker has SP4 installations running in desert irrigation, deep well supply, and high-power water projects. The cases below give you real inverter model, pump, and PV array data to compare against your own project.
Erfoud, Morocco — SP4005 at the edge of the Sahara
This project pairs a 5.5kW SP4005 solar pump inverter with a 4kW three-phase pump and 16 PV panels. It’s a solid real-world reference for hot, dusty, remote irrigation sites where heat tolerance and reliability under harsh conditions actually matter.
Inverter
SP4005, 5.5kW
Pump
4kW three phase
PV Array
16 panels
Mozambique — SP4011 driving a 5.5kW submersible well pump
The Mozambique installation uses an SP4011 with 380V three-phase input and output connected to a 5.5kW submersible pump. The PV array consists of 26 x 550W panels wired as 13 in series across two parallel strings — a practical wiring layout worth referencing.
Inverter
SP4011, 11kW
Pump
5.5kW submersible
PV Array
26 x 550W
| Case | 380V / SP4 Data | Why it matters for buyers | Best internal path |
|---|---|---|---|
| Morocco desert-edge irrigation | SP4005, 5.5kW, 380V/13A, 4kW pump, 16 PV panels | Confirms SP4 performance in extreme heat, dust, and off-grid irrigation conditions. | SP4 product page |
| Mozambique deep well pumping | SP4011, 11kW, 380V three phase, 5.5kW submersible pump, 26 x 550W panels | Shows how real inverter sizing, PV wiring, and submersible pump selection work together in practice. | Pump selection page |
| High-power references | 15kW winter pumping and 200kW irrigation installations available as additional reference points. | Gives EPC buyers confidence that SolarSeeker has successfully delivered at larger scales. | Large irrigation case |
Got a 380V pump nameplate?
Send us the voltage, phase, rated current, head, flow, and project country. We’ll match the right SP4 model and PV array size from your actual pump data.
Technical Range
What the SP4 380V range covers
Use this for a category-level overview. Full model specs, curves, and parameters live on the SP4 product page.
| Selection Layer | 380V System Requirement | SP4 Role | Your Next Step |
|---|---|---|---|
| Motor voltage | 380V / 400V / 415V three-phase pump motor | Matches output voltage and phase to the pump | Send pump nameplate |
| PV array | Solar DC input sized around motor power and local sunlight | MPPT control for direct solar pump operation | Send panel data or site country |
| Pump protection | Dry-run, overload, voltage, and temperature risks | Built-in fault protection and field diagnosis | Confirm sensors and water source type |
| Field integration | Cabinet, breakers, contactors, terminals, and labeling | Core inverter inside a complete control solution | Request cabinet layout |
Field Support
SP4 fault codes make troubleshooting faster on site
With high-power well pump systems, clear fault diagnosis cuts downtime and helps distributors support their installers without a factory call.
111 Low Frequency Fault
Points to weak solar input or pump operating conditions outside the normal range.
222 Dry Run Protection
Critical for deep wells and remote sites where the water source is difficult to monitor manually.
333 Under Voltage Fault
Lets installers quickly check the PV array or AC backup input without guesswork.
Full Project Package
A 380V solar well pump system is more than just the inverter
Most field installations need the pump body, a control cabinet, and the right accessories alongside the SP4. Here’s where to find each component.
SP4 Inverter
The core 380V three-phase solar pump inverter for high-power pump systems.
View SP4Deep Well Pump
Select the pump body by well depth, total head, flow rate, and motor specifications.
Select pumpIP65 Cabinet
Keeps wiring, breakers, terminals, and controls protected in harsh outdoor and field environments.
View cabinetAccessories and Kits
Sensors, contactors, reactors, cooling components, and system accessories matched to your build.
View kitsQuick Inquiry
Not sure if SP4 is the right fit? Let’s check before you commit.
Send the pump nameplate, well depth, head, flow rate, cable distance, PV panel plan, and project country. Our team will confirm whether SP4 alone, SP4 plus cabinet, or a complete solar well pump package is the right path for your site.
FAQ
Common questions about 380V solar well pump systems
Is this page about the 380V solar pump inverter or a full solar well pump system?
Both, really. The SP4 380V inverter is the main product, but B2B buyers usually need the full picture — inverter, pump body, cabinet, sensors, and accessories — before they can specify or order. This page covers the whole system so buyers can make an informed decision.
When does a solar water pump project need the SP4?
Use SP4 when the pump motor is rated for 380V three-phase, when the system power is high, or when the project involves deep well pumping, high-flow irrigation, or industrial water transfer that a 220V unit simply cannot handle.
Can a 380V solar pump inverter run a 220V pump?
No — a 380V inverter needs to be matched with a 380V three-phase pump motor. If your pump is 220V, you need the 220V inverter range instead. If you’re unsure, send the nameplate and we’ll confirm.
Do 380V well pump systems need a control cabinet?
For most high-power projects, yes. A cabinet makes the installation cleaner, protects protection devices, breakers, and terminals from the elements, and makes future maintenance much easier for whoever is on site.
What information do you need to size a 380V solar pump system?
The fastest route is a photo of the pump nameplate. Otherwise, share pump voltage, phase, kW, rated current, total head, flow rate, well depth, cable distance, PV panel plan, and installation country. That’s everything we need to recommend the right SP4 model and array configuration.
Will covering well pump keywords on this page cause SEO cannibalization?
Not in practice. The broad well pump terms here are used to explain the 380V selection process — not to compete with other product pages. The H1 and page title stay focused on 380V solar pump inverter systems and SP4, so there’s no overlap in primary intent.
Next Step
Ready to move forward with your 380V pump project?
Share your pump nameplate and site requirements. We’ll tell you whether you need SP4 only, SP4 with a cabinet, or a fully packaged solar well pump system — before anything gets ordered.