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The CSIVEI 5.5kw VFD Solar Inverter 3 Phase 380V is built for heavy-duty solar pumping applications. It features wide DC input range (450-800V), advanced MPPT with 98.5% efficiency, and support for mixed solar-diesel hybrid operation. The drive includes comprehensive protection: over-voltage, under-voltage, over-current, phase loss, dry running, and over-temperature. An optional LCD display provides real-time solar power, pump speed, flow rate, and fault history. The rugged IP21 enclosure with reinforced cooling ensures long life in dusty environments. Ideal for desert irrigation, fish pond aeration, and industrial water circulation. CSIVEI ensures energy independence.
| MODEL | 5.5kw VFD Solar Inverter 3 Phase 380V |
| 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 |
This 5.5kw VFD Solar Inverter 3 Phase 380V extends beyond agriculture to industrial and commercial water handling. It can power pumps for cooling tower circulation, dust suppression systems, vehicle wash stations, and tank filling in factories, mines, or construction sites where grid power is unreliable or costly. The drive supports hybrid solar‑diesel or solar‑grid input for 24/7 operation. Built‑in protections against phase loss and overload ensure durability in harsh industrial environments.
Examples: mine dewatering, quarry dust control, concrete batching plant water supply, and car wash water recycling. By using solar energy, companies reduce operational costs and carbon footprint.
Managing solar pumps in remote locations becomes effortless with the CSIVEI 5.5kw VFD Solar Inverter 3 Phase 380V built-in telemetry and diagnostic capabilities:
● Data logging – records daily energy yield, water volume, pump runtime, and fault events.
● Real-time display – LCD keypad shows solar voltage/current, pump frequency, flow rate, and cumulative water output.
● RS485 Modbus RTU – standard port for connection to PLC, SCADA, or data loggers.
● Optional GPRS/4G/WiFi modules – enables remote monitoring via smartphone or cloud platform. Receive alarms for dry-run, over-temperature, or pump fault via SMS or app.
● Predictive maintenance – tracks motor current and vibration (with optional sensor) to warn of bearing wear or impeller blockage before failure occurs.
With remote access, operators can adjust parameters, restart the pump, or schedule cleaning cycles without traveling to the site, reducing operational costs and downtime.
Q1: How do I set the drive to start automatically at sunrise?
A: The drive has an “Auto Start” function based on solar power. Parameter P.31 (Start Power Threshold) sets the minimum DC power needed to start the pump. When solar power exceeds this threshold for 10 seconds, the drive starts. No external timer needed.
Q2: How often should I clean the cooling fan and heatsink?
A: In dusty environments, inspect every 3 months. Use compressed air to blow dust from the heatsink fins and fan. Clogged cooling causes over‑temperature faults. For IP54/IP65 outdoor enclosures, clean external vents annually.
Q3: Can I use smaller solar panels if I add a battery?
A: Yes. With battery storage, you can run the pump for more hours using a smaller array, because surplus solar is stored during peak sun and used later. However, battery cost may outweigh panel savings. CSIVEI offers a hybrid sizing tool.
Q4: Is the drive compatible with SCADA systems like Siemens or Allen‑Bradley?
A: Yes. Modbus RTU is standard. Optional fieldbus modules are available for Profibus DP, Profinet, Ethernet/IP, and CANopen. The drive comes with a GSD file for Profibus and EDS file for Ethernet/IP.
Q5: Can I use this drive with an existing grid-connected pump?
A: Yes. The drive supports hybrid operation: solar priority with grid backup, or grid only. You can retrofit it to an existing pump to add solar capability without replacing the motor.
An environmental NGO in the Sahel region planted 50,000 trees to combat desertification. A CSIVEI solar pump VFD with a 5.5kW array powered a deep‑well pump to irrigate tree seedlings.
85% seedling survival rate (vs. 40% without irrigation).
Solar operation eliminated need for fuel convoys in remote area.
Automatic low‑water shutdown protects pump during dry seasons.
System has run for 4 years with only one fan replacement.
The project has been replicated in three neighboring villages.
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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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