4.0kw MPPT Solar Charge Controller

SPC-4K0 MPPT Solar Charge Controller

When choosing a solar water pump inverter, you need to determine the appropriate model based on the water pump capacity, solar panel configuration and specific needs of the application scenario. The following are simple selection suggestions for different system sizes:

1. Small system (less than 1.5kW)
Suitable for domestic water supply, agricultural irrigation or small landscape watering. Such systems are usually equipped with 1-4 solar panels with a total power of 300-1500W and a single-phase water pump. It is recommended to choose an inverter that supports single phase output and has a rated power range of 0.75kW-1.5kW. These devices usually have built-in MPPT functions to optimise system operation when light conditions change.

2. Medium system (1.5kW-5kW)
Used in scenarios such as medium agricultural irrigation, village water supply or fish pond oxygenation. Such systems usually use three-phase water pumps and the total power of the solar panels is 1.5-5kW. It is recommended to choose an inverter that supports three-phase output and a wide input voltage range to ensure that the inverter can adapt to a variety of solar panel voltages. Some models also support hybrid power input (solar + grid) to ensure continuous operation.

3. Large systems (over 5kW)
Suitable for large scale agricultural irrigation, municipal water supply or industrial water use scenarios where high power water pumps (over 5kW) are required and the total power of the solar panels exceeds 5kW. It is recommended to use inverters that support high power and multi-input functions. In addition, devices that support remote monitoring can significantly improve management efficiency.

When choosing an inverter, make sure that its power and voltage range match your system requirements and leave some room for expansion. If you are unsure of the specific parameters, you can confirm them based on the actual water pump model and battery panel configuration!

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