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The CSIVEI factory's high performance 1 Phase in 3 Phase Out 11kw Pump Inverter is a compact, high-efficiency solution for three-phase solar pumping systems. It incorporates MPPT algorithms with up to 99% tracking efficiency, enabling direct connection to solar arrays without batteries. The drive supports both V/F and vector control, ensuring smooth pump startup even under low irradiance. Built-in protection functions include over-voltage, under-voltage, over-current, dry-run, and pipe burst detection. The IP20 enclosure allows side-by-side mounting. Ideal for small farm irrigation, garden fountains, and water transfer in remote areas. CSIVEI delivers reliable performance with easy commissioning.
| MODEL | 1 Phase in 3 Phase Out 11kw 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 |
Designed for rural community water supply, this VFD powers pumps that lift water from boreholes, rivers, or reservoirs to elevated storage tanks or direct distribution networks. The system operates automatically: when solar power is sufficient, the pump fills the tank; when the tank is full, the drive enters sleep mode, preserving mechanical life. Ideal for village water kiosks, school water systems, and health clinic supply. The built‑in PID ensures constant pressure in elevated tanks, while the MPPT algorithm extracts maximum power from solar panels even on cloudy days. This solution provides clean, low‑cost water for drinking and sanitation without diesel or grid dependence.
Protecting the pump from damage is critical in solar water systems. The CSIVEI 1 Phase in 3 Phase Out 11kw Pump Inverter includes a comprehensive suite of pump-specific protections:
● Dry-run protection – monitors current, power, or optional flow sensor; stops the pump when water source is depleted and automatically retries after a settable interval.
● Pipe burst / low flow detection – detects sudden current drop indicating pipe rupture or leak, shuts down to prevent flooding.
● Over-current & overload protection – prevents pump from overheating due to sand, scaling, or bearing failure.
● Under-voltage & over-voltage shutdown – safeguards the drive and motor from unstable solar input.
● Anti-reverse irrigation – when pump stops, a check valve can be controlled to prevent water backflow that spins the motor backwards.
These protections extend pump life, reduce maintenance visits, and provide reliable water delivery in remote solar installations.
Q1: Does this drive have built‑in Wi-Fi or cellular for remote monitoring?
A: The drive has an RS485 Modbus RTU port. To enable wireless monitoring, add an external gateway (e.g., CSIVEI CloudBox) that connects via Wi‑Fi, Ethernet, or 4G. The gateway uploads data to CSIVEI Cloud or third‑party platforms.
Q2: Can I run the pump directly from solar panels without batteries?
A: Yes. The CSIVEI 1 Phase in 3 Phase Out 11kw Pump Inverter is designed for direct solar‑to‑pump operation. It uses MPPT to convert variable DC from panels into stable AC for the pump. The drive automatically starts when solar power exceeds the pump’s threshold and stops when insufficient, protecting the motor.
Q3: Do I need a DC breaker between panels and the drive?
A: Yes, a DC rated circuit breaker or fused disconnect is mandatory for safety and code compliance. CSIVEI recommends a 2‑pole DC breaker sized at 1.25x the maximum DC current.
Q4: How do I set constant pressure mode?
A: Connect a 4‑20mA pressure transmitter to analog input AI1. Set parameter P.00 = 1 (PID mode). Then set target pressure in P.77 (engineering units). The drive will adjust pump speed to maintain that pressure regardless of solar variation.
Q5: What is the expected lifespan of this solar VFD?
A: With proper installation (clean, dry, within temperature limits), the drive typically lasts 10‑15 years. Electrolytic capacitors age faster in hot environments – keeping ambient below 40°C extends life. The cooling fan may need replacement every 5‑7 years.
The system has run fault‑free for 3 years, transforming community health and economic activity.
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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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