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JNTech SWP Series Solar Pump Inverter (30–55 kW)

Q: Q1: What types of pumps are compatible?

A: The inverter supports most three-phase centrifugal and submersible water pumps within the rated power range.

Q: Q2: Does the system work without batteries?

A: Yes. The SWP-H Series is designed for direct solar pumping , eliminating battery cost and maintenance.

Q: Q3: How does the inverter protect the pump when water runs out?

A: Dry-run protection detects abnormal load conditions and automatically stops the pump to prevent damage.

Q: Q4: Can the system be monitored remotely?

A: Yes. RS485 communication enables integration with monitoring or data-logging systems.

Q: Q5: Is this suitable for harsh outdoor environments?

A: The inverter is designed for wide temperature ranges and continuous operation in demanding solar pumping conditions (recommended installation in ventilated cabinets).

SWP30KH-V1
SWP37KH-V1
SWP45KH-V1
SWP55KH-V1

Product Introduction

The JNTech SWP30KH-V1 / SWP37KH-V1 / SWP45KH-V1 / SWP55KH-V1 solar pump inverters are engineered for medium to large solar water pumping applications, where continuous operation, system stability, and long service life are critical. Designed with industrial-grade power electronics and intelligent VFD control, this series directly converts DC power from photovoltaic arrays into stable three-phase AC output, driving submersible or surface pumps efficiently without batteries. The system adapts dynamically to solar irradiation, ensuring reliable water delivery under changing weather conditions.

Product Features

Industrial-Level Power Stability. Optimized for 30–55 kW motor loads, the inverter delivers smooth variable-frequency output, minimizing mechanical stress on pumps and extending motor lifespan during long-hour operation.
Industrial-Level Power Stability. Optimized for 30–55 kW motor loads, the inverter delivers smooth variable-frequency output, minimizing mechanical stress on pumps and extending motor lifespan during long-hour operation.
Advanced MPPT & Solar Priority Logic. Wide MPPT voltage range enables the inverter to extract maximum power from PV arrays throughout the day, automatically adjusting pump speed based on available solar energy.
Comprehensive Pump & System Protection. Built-in protections include dry-run detection, over-current, over-voltage, phase loss, overload, and thermal protection—significantly reducing pump failure risks in remote installations.

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Home Products JNTech SWP Series Solar Pump Inverter (30–55 kW)

Technical Specifications

SWP30KH-V1
SWP37KH-V1
SWP45KH-V1
SWP55KH-V1

Item	SWP30KH-V1
Max. Motor Power	30 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	60 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	SWP37KH-V1
Max. Motor Power	37 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	75 A
Cooling Method	Forced Air Cooling
Communication	RS485
Operating Temperature	Same
Protection Level	IP20
Noise Level	<65 dB
Compliance	Same

Item	SWP45KH-V1
Max. Motor Power	45 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	90 A
Cooling Method	Forced Air Cooling
Communication	RS485
Operating Temperature	Same
Protection Level	IP20
Noise Level	<65 dB
Compliance	Same

Item	SWP55KH-V1
Max. Motor Power	55 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	110 A
Cooling Method	Forced Air Cooling
Communication	RS485
Operating Temperature	Same
Protection Level	IP20
Noise Level	<65 dB
Compliance	Same

Description

Heavy-Duty Variable Frequency Drive for Medium-Scale Solar Water Pumping Systems

System Working Principle

The SWP inverter is installed between the photovoltaic array and the AC water pump.
During daylight, PV modules generate DC electricity, which is fed directly into the inverter. The inverter applies MPPT algorithms to optimize power extraction and converts DC into variable-frequency AC power to drive the pump.

As solar irradiance changes, the inverter automatically adjusts pump speed to maintain stable operation. When sunlight is insufficient, the system safely reduces output or stops operation, preventing dry running and mechanical damage.

Typical Application Scenarios

Agricultural irrigation systems
Rural and remote village water supply
Livestock watering projects
Reservoir filling and water transfer systems
Solar-powered pumping for farms, plantations, and desert regions

This power range is especially suitable for large irrigation areas and high-head pumping projects.

Q1: What types of pumps are compatible?

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 when water runs out?

A: Dry-run protection detects abnormal load conditions and automatically stops the pump to prevent damage.

Q4: Can the system be monitored remotely?

A: Yes. RS485 communication enables integration with monitoring or data-logging systems.

Q5: Is this suitable for harsh outdoor environments?

A: The inverter is designed for wide temperature ranges and continuous operation in demanding solar pumping conditions (recommended installation in ventilated cabinets).

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