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The CSIVEI 7.5kw 380V Solar Water Pump Inverter is a robust solution for large-scale solar water lifting. It supports multiple pump control modes: constant speed, constant pressure, and constant flow. The drive integrates MPPT and a built-in PLC for automatic pump sequencing when multiple pumps are used. Advanced vector control ensures stable operation even with long cable distances. Protection includes anti-reverse irrigation, pipe burst detection, and automatic restart after grid failure (if hybrid). Communication via Modbus, Profibus, or Ethernet/IP enables integration into smart farming systems.
| MODEL | 7.5kw 380V Solar Water Pump Inverter |
| Input voltage | AC,1PH,220V(-15%)~240V(+10%) |
| AC,3PH,380V(-15%)~440V(+10%) | |
| Rated frequency | 50/60Hz |
| Frequency range | ±5%（47.5~63Hz） |
| Output Voltage | 0-Output Voltage |
| Output Frequency | 0.1~500Hz |
| Highest frequency | Vector control：0~500Hz |
| V/F control：0~500HZ | |
| Carrier frequency | 0.8KHz~8KHz |
| The carrier frequency can be automatically adjusted according to the load characteristics | |
| Input frequency resolution | Digital setting：0.01Hz |
| Simulation setting：Maximum frequency x 0.025% | |
| Control Method | SVC Open-loop vector control |
| V/F Open-loop speed control | |
| Starting torque | 0.5Hz/150%(SVC) |
| Speed range | 1:100(SVC) |
| Speed stability accuracy | ±0.5%(SVC) |
| Overload capacity | 150%Rated current：60s，170%Rated current：12s，190%Rated current：1.5s |
| Torque Increase | Automatic Torque Boost；Manual torque boost: 0.1%~30.0% |
| V/F curve | Three methods：1.Linear；2.Multifocal；3.Power-type V/F curve |
| V/F separation | 2 methods：Fully separated；Semi-detached |
| Acceleration and Deceleration Curve | Linear or S-curve acceleration and deceleration methods. Two types of acceleration and deceleration times, with a time range of 0.0~6500.0s |
| DC braking | DC braking frequency：0.00Hz~Maximum frequency |
| Braking time：0.0s~36.0s | |
| Brake operation current value：0.0%~100.0% | |
| Jog control | Jog frequency range: 0.00Hz to maximum frequency. Jog acceleration and deceleration time: 0.0s to 6500.0s |
| Built-in PID | It can conveniently achieve a process control closed-loop control system |
| AVR | When the grid voltage changes, it can automatically maintain a constant output voltage. |
| Torque Limiting and Control | “Excavator” features automatically limit torque during operation to prevent frequent overcurrent trips |
Ideal for emergency and off‑grid humanitarian water supply, this solar pump drive is quickly deployable for disaster relief, refugee camps, or temporary settlements. It can run submersible or centrifugal pumps from portable solar arrays, providing drinking water, sanitation, and firefighting reserves. The drive features automatic daily start/stop scheduling, low water level cutoff, and an LCD display for easy troubleshooting by non‑technical staff. Rugged construction and optional IP54 enclosure allow outdoor installation without a shelter. Common deployments: earthquake‑affected villages, displaced persons camps, remote medical clinics, and wildfire protection water tanks. Solar operation eliminates the need for fuel convoys, saving time and lives.
Solar pump installations are often exposed to harsh environments – intense UV, dust, high humidity, and extreme temperatures. The CSIVEI 7.5kw 380V Solar Water Pump Inverter is engineered for outdoor reliability:
● IP54/IP65 enclosure option – dust-tight and protected against water jets; suitable for direct mounting on pump skids or poles without an additional cabinet.
● Conformal coated PCBs – resists moisture, salt spray, and corrosive gases (e.g., ammonia in farms, hydrogen sulfide in wastewater).
● Wide operating temperature – -20°C to +55°C without derating; optional cooling fan or liquid cooling for desert climates (up to 60°C).
● Integrated DC and AC surge protection – withstands lightning-induced spikes common in open solar fields.
● UV-resistant keypad and enclosure – prevents cracking and yellowing after years of sunlight exposure.
This rugged construction ensures the drive delivers 10+ years of maintenance-free operation, even in the most challenging off-grid locations – from sandy deserts to tropical coastlines.
Q1: What cable size do I need between solar panels and the drive?
A: Cable size depends on DC current and distance. For a 7.5 kW drive, typically 4‑10mm² copper cable is used for short distances. Use our cable sizing tool or consult a technician. Always use UV‑resistant, double‑insulated cables for outdoor runs.
Q2: The pump stops intermittently on cloudy days. Is that normal?
A: Yes. When solar irradiance drops below the start threshold, the drive will stop the pump to avoid low‑speed overheating. Once sufficient solar power returns, the drive automatically restarts. You can adjust the start and stop power thresholds to reduce frequent cycling.
Q3: The drive trips on “Over Current” when starting the pump. What can I do?
A: Increase the acceleration time (parameter P.10) to reduce starting current. Also check if the pump shaft is stuck or impeller blocked. If the motor is old, insulation resistance may be low – measure with a megger.
Q4: How does the drive perform in partial shading conditions?
A: The MPPT algorithm includes “global scan” mode (parameter P.91 = 1) that periodically sweeps the entire I‑V curve to find the true maximum power point, avoiding local peaks caused by shading. This can recover 10‑30% of lost power compared to standard MPPT.
Q5: How do I set up SMS alerts for pump faults?
A: Connect a GSM modem (e.g., CSIVEI GSM‑01) to the drive’s RS485 port. Configure parameter group P.15 to set phone numbers and fault types (dry‑run, over‑current, etc.). When a fault occurs, the drive sends an SMS to up to 5 numbers.
A quarry in a water‑scarce region needed continuous dust control but grid power was unreliable. A CSIVEI solar pump VFD with a CSIVEI 7.5kw 380V Solar Water Pump Inverter array powered a high‑pressure pump feeding misting cannons.
Dust levels reduced to below regulatory limits.
Diesel generator backup only needed 2% of the time.
Energy cost cut by 85% compared to running grid/diesel.
Remote monitoring via Modbus allows plant manager to check water flow from office.
The system paid for itself in 18 months and has been adopted at two other company sites.
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No. 3788, Liujiang Road, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province, China
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If you have any enquiry about quotation or cooperation, please feel free to email us at sanchia@csivei.com or use the following inquiry form.Our sales representative will contact you within 24 hours. Thank you for your interest in our products.
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