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China Photovoltaic Water Pump Inverter Factory: All-Weather Grid Complementary Solution from Leading Suppliers
⚡ Product Features
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Dual-Power Intelligent Switching Innovatively adopting a solar-first + grid-supplemented intelligent control strategy, the system uses 100% solar power to drive the water pump when sunlight is abundant, achieving "zero electricity cost" operation. When solar power is insufficient, the system automatically and seamlessly switches to grid power mode, ensuring continuous pumping on cloudy days and at night, completely solving the pain point of traditional solar water pumps being dependent on weather conditions.
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99% Ultra-Efficient MPPT Algorithm Equipped with a self-developed third-generation intelligent MPPT tracking engine, the system achieves a tracking efficiency of up to 99%, more than 40% higher than traditional solutions. By monitoring the voltage and current characteristics of the solar array in real time, the system dynamically adjusts the operating point to maximum power output, ensuring that every ray of sunlight is efficiently converted into pumping energy.
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Intelligent Load Matching Technology Built-in pump characteristic curve learning algorithm automatically adapts to different types of water pumps such as centrifugal pumps, submersible pumps, and screw pumps, optimizing motor starting current, reducing mechanical shock, and extending equipment life.
📋 Model Specifications
| Model | Adapted Pump Motor | Max PV Input Power (KWP) | Rated DC Input Voltage (V) | Recommend MPPT Input Voltage (V) | Rated AC Output Current (A) | Output Frequency (HZ) | Protection Degree | |
|---|---|---|---|---|---|---|---|---|
| Rated Power (KW) | Rated Voltage (V) | |||||||
| SPI-1500W | 1.1~1.5 | 200~220 | 1.85 | 360 | 300~600 | 9 | 0~50/60 | IP65 |
| SPI-2200W | 2.2 | 3 | 13 | |||||
| SPI-3700W | 3~3.7 | 4.5 | 22 | |||||
| SPI-5500W | 4.5~5.5 | 380~480 | 7 | 600 | 400~800 | 11 | ||
| SPI-7500W | 7.5 | 9 | 15 | |||||
| SPI-11KW | 9.2~11 | 13 | 22 | |||||
| SPI-15KW | 13~15 | 18 | 30 | |||||
| SPI-18KW | 18.5 | 21 | 35 | |||||
| SPI-22KW | 22 | 25 | 45 | |||||
| SPI-30KW | 26~30 | 35 | 60 | |||||
| SPI-37KW | 37 | 45 | 75 | IP20 | ||||
| SPI-45KW | 40~45 | 53 | 90 | |||||
| SPI-55KW | 55 | 65 | 110 | |||||
| SPI-64KW | 64 | 76 | 130 | |||||
| SPI-75KW | 75 | 88 | 150 | |||||
| SPI-90KW | 90 | 113 | 180 | |||||
| SPI-110KW | 110 | 130 | 220 | |||||
| SPI-132KW | 132KW | 156 | 260 | |||||
| SPI-150KW | 150KW | 176 | 300 | |||||
🌍 Application Scenarios & Advantages
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Farmland Irrigation
In sunny regions such as Yunnan and Xinjiang, successfully applied to large-scale farmland irrigation projects exceeding 200 mu (approx. 33 acres), saving over 70% in costs and reducing carbon emissions by 90% compared to traditional diesel engine irrigation.
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Water Supply in Remote Mountainous Areas
In remote mountainous areas without power grid coverage, a photovoltaic + grid power complementary model solves the drinking water and livestock water problems for villagers, improving their quality of life.
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Pasture and Grassland Irrigation
In pastoral areas such as Inner Mongolia and Qinghai, ensures grassland irrigation and livestock drinking water needs, promotes grassland-livestock balance, and supports the development of ecological animal husbandry.
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Energy Saving and Environmental Protection Advantages
The system's total life-cycle carbon emissions are only 1/5 of those of traditional diesel engine water pumps, meeting the "dual carbon" target requirements.
❓ Frequently Asked Questions
Q
What is the dual-power switching mechanism and how does it work?
The system uses a solar-first + grid-supplemented intelligent control strategy. When solar irradiance is sufficient, the controller drives the pump entirely on solar power at zero electricity cost. When solar power drops below the required threshold — such as on cloudy days or at night — the system automatically and seamlessly switches to grid power, ensuring uninterrupted pumping operation without any manual intervention.
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What does 99% MPPT tracking efficiency mean in practice?
MPPT (Maximum Power Point Tracking) efficiency refers to how effectively the controller harvests available solar energy. At 99%, the system captures nearly all available solar power from the panels — more than 40% better than conventional solutions — meaning more water is pumped per day under the same solar conditions, maximizing return on investment.
Q
Which types of water pumps are compatible with this controller?
The built-in intelligent load matching technology supports a wide range of pump types, including centrifugal pumps, submersible pumps, and screw pumps. The system automatically learns the pump's characteristic curve and optimizes motor starting current and operating parameters accordingly, reducing mechanical wear and extending equipment lifespan.
Q
What power range is available and what protection ratings do the models offer?
The SPI series covers a wide power range from 1,500W up to 150KW, making it suitable for small household water supply systems to large-scale commercial irrigation projects. Models up to SPI-30KW carry an IP65 protection rating (dust-tight and water-resistant), while higher-power models (SPI-37KW and above) are rated IP20, typically installed in protected enclosures or control cabinets.
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How much cost and carbon emission can be saved compared to diesel-powered pumps?
Based on real-world deployments in regions such as Yunnan and Xinjiang, the system achieves over 70% reduction in operational costs compared to traditional diesel engine irrigation. In terms of environmental impact, the total life-cycle carbon emissions of the SPI solar pump controller are only 1/5 of those generated by diesel-powered alternatives, fully aligned with international "dual carbon" emission reduction targets.
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Is this system suitable for areas without grid power access?
Yes. The system is specifically designed to address water supply challenges in off-grid and remote locations. In areas without power grid coverage — such as remote mountainous villages or pastoral regions in Inner Mongolia and Qinghai — the controller operates primarily on solar energy. For locations where occasional grid backup is available, the hybrid mode ensures year-round reliable water supply for drinking, livestock, and irrigation purposes.