Products
The JNTech SWP15–22KH Series solar pump inverters are designed for medium-capacity irrigation and water supply projects, where stable operation, high head performance, and long service life are critical. Covering 15kW, 18.5kW, and 22kW three-phase motors, this series integrates advanced MPPT control, solar-grid hybrid compatibility, and comprehensive pump protection logic, enabling reliable water delivery even under fluctuating solar conditions. By directly converting DC power from photovoltaic arrays into controlled AC output, the SWP15–22KH series eliminates fuel and grid dependency while ensuring smooth pump operation and reduced mechanical stress.
Solar Pump Inverter 15kW/18.5kW/22kW
- SWP15KH-V1
- SWP18K5H-V1
- SWP22KH-V1
Product Introduction
Product Features
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Optimized for Medium-Power Pumping Applications. Engineered specifically for 15–22kW centrifugal and submersible pumps, supporting high head and long pipeline irrigation systems without performance instability.
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High-Accuracy MPPT with Wide Voltage Window. Advanced MPPT algorithms maintain optimal power tracking across a broad PV voltage range, ensuring consistent water output during changing irradiance conditions.
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Comprehensive Pump & System Protection. Built-in logic protects both inverter and motor through dry-run detection, phase loss protection, overcurrent control, overvoltage suppression, and soft start/stop, extending pump lifespan and minimizing downtime.
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Industrial Reliability for Harsh Environments. Designed for continuous outdoor and agricultural operation, featuring robust power components, forced-air cooling, and stable performance in high-temperature and dusty conditions.
Technical Specifications
- SWP15KH-V1
- SWP18K5H-V1
- SWP22KH-V1
Item SWP15KH-V1 Max. Motor Power 15 kW PV Input Voltage (Max.) 800 VDC Recommended MPPT Range 485–750 VDC MPPT Efficiency >99% AC Output Voltage 380–440 VAC, 3-phase Output Frequency 47–63 Hz Rated Output Current 30 A Cooling Method Forced Air Cooling Communication RS485 Operating Temperature -25°C to +50°C (derating above 50°C) Protection Level IP20 Noise Level <65 dB Compliance EN 50178 / IEC 62109-1 / IEC 61800 Item SWP18K5H-V1 Max. Motor Power 18.5 kW PV Input Voltage (Max.) 800 VDC Recommended MPPT Range 485–750 VDC MPPT Efficiency >99% AC Output Voltage 380–440 VAC, 3-phase Output Frequency 47–63 Hz Rated Output Current 37 A Cooling Method Forced Air Cooling Communication RS485 Operating Temperature Same Protection Level IP20 Noise Level <65 dB Compliance Same Item SWP22KH-V1 Max. Motor Power 22 kW PV Input Voltage (Max.) 800 VDC Recommended MPPT Range 485–750 VDC MPPT Efficiency >99% AC Output Voltage 380–440 VAC, 3-phase Output Frequency 47–63 Hz Rated Output Current 45 A Cooling Method Forced Air Cooling Communication RS485 Operating Temperature Same Protection Level IP20 Noise Level <65 dB Compliance Same
Description
Product description
Industrial-Grade VFD for Medium-Scale Solar Water Pumping Systems
System Working Principle
The SWP15–22KH solar pump inverter operates as the core control unit between PV arrays and three-phase AC pumps:
- Solar panels generate DC electricity and feed it directly into the inverter.
- The inverter applies MPPT control to maximize solar utilization.
- DC power is converted into variable-frequency AC output.
- Pump speed is dynamically adjusted according to solar availability and water demand.
- When solar energy is insufficient, the system can optionally cooperate with grid or generator input (hybrid mode) to maintain continuous pumping.
This intelligent control ensures stable water flow, reduced mechanical shock, and higher system efficiency throughout the day.
Typical Application Scenarios
- Agricultural irrigation systems (sprinkler / drip / canal pumping)
- Deep-well and high-head water lifting projects
- Remote farmland water supply without grid access
- Livestock watering and pasture irrigation
- Rural water infrastructure and eco-restoration projects
Q1: What pump types are compatible with the SWP15–22KH series?
A: The inverter supports most three-phase centrifugal and submersible water pumps within the rated power range.
Q2: Does the system work without batteries?
A: Yes. The SWP-H Series is designed for direct solar pumping, eliminating battery cost and maintenance.
Q3: How does the inverter protect the pump from dry running?
A: It monitors power, current, and operating logic to automatically stop the pump when water shortage is detected.
Q5: Is it suitable for high-temperature regions?
A: Yes. The inverter operates reliably up to 50°C, with intelligent derating above that threshold for long-term stability.
Q6: Can multiple inverters be used in large projects?
A: Yes. The SWP series supports modular system design for scalable solar pumping solutions.
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