370W 750W 24V 48V 60V 72V DC Brushless Solar Submersible Water Pump with Built-in Controller, Solar Screw Deep Well Pump

Product Description: DC Solar Brushless Deep Well Pump

1. Overview: Intelligent Solar Water Solution

This is a high-efficiency DC Solar Brushless Submersible Pump, designed specifically for off-grid irrigation and water supply. Powered directly by solar panels, it features automatic start/stop functionality without the need for batteries or external controllers (built-in MPPT controller).

Constructed with advanced materials like 304 Stainless Steel and Cast Iron, combined with a special waterproof mechanical seal, this pump is built to last. It offers significant advantages: energy-saving, high flow rate, rust-proof, and compact design.

2. Key Features & Protections

Built-in Smart Controller: Automatically matches the solar input, ensuring stable operation even with fluctuating sunlight.

Comprehensive Safety System:

Low Voltage Protection: Prevents battery drain (if using battery).

Over-voltage / Over-load Protection: Protects the motor from burning out.

Over-heat & Dry-run Protection: Automatically shuts off if the pump overheats or runs dry.

Jam Protection: Detects obstructions and protects the impeller.

Premium Materials: Corrosion-resistant stainless steel body ensures durability in harsh well environments.

3. How to Size Your Solar Panels (Critical Guide)

To ensure your pump works efficiently, you must match it with the correct solar panel power. Here is the calculation logic:

Power Calculation:

The pump's rated power refers to its Input Power.

Formula:

Required Solar Panel Power = Pump Rated Power ÷ 0.65 ~ 0.7

(Note: Solar system efficiency is typically 65%-70%).

Configuration Rule:

We recommend configuring solar panels at 1.5 to 2 times the pump's rated power.

Example:If your pump is 200W, you need 300W - 400W of solar panels.

Voltage Matching:Ensure the Open Circuit Voltage (Voc) of your solar array matches the pump's voltage range (24V/48V/72V).

4. Understanding Solar Efficiency & Working Hours

Solar power generation is not constant throughout the day; it depends on sunlight intensity, angle, and temperature.

Working Hours: With proper panel sizing (1.5x power), the pump can run approximately 6-8 hours on a sunny day. It will start automatically when light is sufficient and stop when it gets dark or voltage drops too low.

5. Technical Specifications

Motor Type: Permanent Magnet Synchronous Brushless DC Motor (High efficiency, low energy loss).

Pump Type: Centrifugal / Screw / Helical Rotor (depending on model/depth).

Voltage Options: 24V / 48V / 60V / 72V DC.

Application: Agriculture Irrigation, Deep Well Water Supply, Household Water Tanks, Pool Circulation.