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The CSIVEI factory's 1.5KW Single Phase Solar Pump Inverter is a high-capacity drive for mega solar pumping projects. It supports direct connection to high-voltage solar arrays (up to 1500V DC), reducing cable losses. The drive incorporates AI-based MPPT that adapts to cloud passing and partial shading. Built-in harmonic filters and active front end ensure grid compliance in hybrid systems. Features include pump curve optimization, automatic flow control, and 24/7 remote monitoring via 4G/5G. The rugged IP54 enclosure with marine-grade coating is suitable for coastal or dusty deserts.
CSIVEI provides full commissioning and after-sales support for large-scale solar pumping.
| Input voltage | AC,3PH,380V(-15%)~440V(+10%) |
| Power | 185-220kw |
| 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 |
For ecological restoration projects, this solar pump drive provides a sustainable water source for afforestation, grassland rehabilitation, and desert green belts. It lifts groundwater or collects surface water to irrigate tree seedlings, shrubs, and native vegetation in arid regions. The system can be fully automated with timer or soil moisture sensors, delivering water only when needed. Its wide input voltage range accepts solar arrays of various configurations, making it easy to scale. Deployed in anti‑desertification belts, roadside tree planting, mine reclamation, and wetland restoration, the drive ensures high uptime without fuel logistics, even in the most remote locations.
The CSIVEI 1.5KW Single Phase Solar Pump Inverter employs sensorless vector control optimized for centrifugal and submersible pump loads. This delivers:
● High starting torque – up to 150% at 0.5Hz, essential for deep-well pumps with long shafts.
● Stable low-speed operation – prevents stalling when solar power is marginal.
● Automatic pump curve adaptation – the drive learns the pump’s head-flow characteristics to maintain optimum efficiency.
● Constant pressure / constant flow modes – built-in PID accepts feedback from pressure or flow sensors, maintaining setpoint regardless of solar fluctuations.
● Soft start & soft stop – eliminates water hammer, pipe stress, and motor surge current.
These algorithms ensure the pump operates smoothly across the entire solar day, from early morning to late afternoon, without frequent tripping or mechanical shock.
Q1: The drive shows “Dry‑Run” fault but there is water in the well. What’s wrong?
A: The dry‑run sensor (flow switch, electrode, or pressure sensor) may be incorrectly installed or calibrated. Check sensor wiring and set the detection delay longer (parameter P.61) to avoid false trips during pump startup. Also verify that the pump is actually submerged – water level may have dropped below the intake.
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: 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: Can I update the firmware myself?
A: Firmware updates are performed by authorized CSIVEI service centers using special tools. Contact your supplier if you experience bugs or need new features. Do not attempt DIY firmware update as it may brick the drive.
Q5: What is the expected lifespan of this 1.5KW Single Phase Solar Pump Inverter?
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.
A tilapia farm in Southeast Asia experienced low oxygen levels during the summer, leading to fish deaths. To address this, the farm installed our 1.5KW Single Phase Solar Pump Inverter.
Dissolved oxygen maintained above 4 mg/L throughout hot months.
Fish mortality reduced by 70%.
Energy cost zero – previously spent $400/month on electricity.
Pump speed automatically adjusts with solar intensity.
The farm increased stocking density by 30% without additional operating costs.
Address
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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