China Solar MPPT Pump Inverter 25-250KW – Efficient PV System Solutions from Trusted Suppliers and Factory

Discover the Bangzhao Electric SPI Series Solar MPPT Pump Inverter, a vital component of our cutting-edge PV pump inverter system. This high-performance inverter efficiently converts the direct current (DC) generated by the photovoltaic (PV) array into alternating current (AC) to drive water pumps. Designed by a leading manufacturer in China, our factory ensures the highest quality standards to maximize your solar energy utilization. The SPI series intelligently adjusts output voltage and frequency in real-time based on sunlight intensity changes, enabling optimal power point tracking. Trust Bangzhao Electric, a top supplier in the industry, for reliable and efficient solar pumping solutions that harness the full potential of solar energy

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⚡ Product Features

1

VI maximum power point tracking (MPPT) algorithm, fast response speed, running stability — solves traditional MPPT issues of poor tracking, unstable running, and water hammer damage under rapidly changing sunlight intensity.
2

Adopts high-efficiency IPM (Intelligent Power Module) from Mitsubishi with powerful protection function and highly stable performance.
3

The system runs automatically without human supervision, saving significant manpower.
4

New type Variable Frequency Driver (VFD) technology ensures the pump can operate even in low-sunshine conditions, greatly improving efficiency and maximizing solar array utilization.
5

Full digital control, automatic operation, data storage, and comprehensive protection functions with timed power on/off settings — fully unattended operation achievable.
6

LCD display operating panel — easily set and view various operating parameters through the LCD interface.
7

Complete protection functions: PV input under/over voltage, reverse polarity, DC over current, output overload, short circuit, dry well, overflow, dry running, and blocking protection.
8

Eco-friendly and economical design — uses water storage instead of battery storage, no battery device required, direct drive pump. High reliability and greatly reduced construction and maintenance costs.
9

Modular system design for stable operation, high reliability and safety. Installation and maintenance are very convenient.
10

Equipped with RS485 data communication interface for remote monitoring (Optional).

🌎 Application Scope

📊 Product Parameters

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
Model	Rated Power (KW)	Rated Voltage (V)	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
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

❓ Frequently Asked Questions (FAQ)

What is the MPPT algorithm used in this solar pump inverter and what are its advantages?

This inverter uses the VI Maximum Power Point Tracking (MPPT) algorithm, which offers fast response speed and stable operation. Unlike traditional MPPT methods, it effectively solves poor tracking performance, unstable running, and potential water hammer damage caused by rapid changes in sunlight intensity.

Does the solar pump inverter require batteries for energy storage?

No. This system is designed based on an eco-friendly and economical concept — it uses water storage instead of battery storage. There is no battery device required, and the pump is driven directly, which greatly reduces construction and maintenance costs while improving overall system reliability.

What protection functions does the solar pump inverter provide?

The inverter offers comprehensive protection including: PV input under-voltage and over-voltage protection, input reverse polarity protection, DC over-current protection, output overload protection, short circuit protection, dry well protection, overflow protection, dry running protection, and blocking protection — ensuring safe and reliable operation under all conditions.

What is the available power range for the solar pump inverter models?

The solar pump inverter series covers a wide power range from 1500W (SPI-1500W) up to 150KW (SPI-150KW), making it suitable for small domestic water supply systems as well as large-scale agricultural irrigation and industrial water pumping applications.

Can the solar pump inverter be monitored remotely?

Yes. The inverter is optionally equipped with an RS485 data communication interface, which enables remote monitoring and data management. This feature supports integration with SCADA systems or other monitoring platforms for convenient real-time oversight.

What is the difference between IP65 and IP20 protection ratings in the product lineup?

Models from SPI-1500W to SPI-30KW are rated IP65, meaning they are fully dust-tight and protected against water jets — suitable for outdoor installation environments. Models from SPI-37KW to SPI-150KW carry an IP20 rating, which provides protection against solid objects over 12mm but is intended for installation in protected indoor or enclosure environments.