Doyin DC Submersible Pump 4SDS5

Description

The Doyin DC Submersible Pump 4SDS5 is a high-efficiency, solar-powered borehole pump designed for deep-well water extraction. Unlike the AC versions (4SDM), this “SDS” series utilizes a Brushless DC (BLDC) motor, allowing it to be powered directly by solar panels through an MPPT (Maximum Power Point Tracking) controller.

The nomenclature “4SDS5” typically indicates: 4 (4-inch diameter), SD (Submersible Deep-well), S (Solar/DC), and 5 (Rated flow of 5 m3/h).

1. Technical Performance

The 4SDS5 is a “high-flow” series. While the maximum “Head” (vertical lift) varies based on the wattage (600W to 2200W), the flow rate remains a core strength.

• Rated Flow Rate: 5 m3/h (5,000 Liters per hour).

• Power Options: Common models include 600W (0.75HP), 800W (1.0HP), 1100W (1.5HP), and 2200W (3.0HP).

• Voltage Range: Typically operates on DC voltages ranging from 48V to 280V (depending on the specific motor wattage).

• Max Head Capacity: * 600W Model: ~55 meters.

  • 800W Model: ~80 meters.

  • 1500W Model: ~168 meters.

  • 2200W Model: ~235 meters.

2. Engineering & Material Build

These pumps are built for long-term submersion in harsh borehole environments.

• Motor: Permanent Magnet Brushless DC Motor. It is more efficient than standard AC motors, runs cooler, and has a longer lifespan due to the lack of carbon brushes.

• Pump Body: High-grade AISI 304 Stainless Steel for the external casing, shaft, and coupling to prevent rust and corrosion.

• Impeller System: Usually features “Ordinary” or “Centrifugal” impellers made of high-strength technopolymer or stainless steel, designed to handle clean water with high efficiency.

• Internal Protection: Most professional 4SDS5 kits include an external or internal controller with Dry-Run Protection (stops the pump if the well goes dry) and Over-voltage/Under-voltage protection.

3. Professional Advantages

• Zero Operating Cost: Powered entirely by renewable energy; ideal for off-grid farms, remote villages, and livestock watering.

• Soft Start Technology: The DC controller ensures a “soft start,” preventing the high-current spikes common in AC pumps that can damage equipment over time.

• MPPT Efficiency: The controller constantly adjusts the voltage and current to ensure the pump extracts the maximum possible power from the solar panels, even in cloudy conditions.

4. Installation & Solar Sizing

To achieve the rated 5,000 L/h flow, the solar array must be sized correctly.

5. Primary Applications

1. Agriculture: Large-scale crop irrigation and greenhouse water supply.

2. Livestock: Automatic watering systems for ranches and poultry farms.

3. Domestic: Filling overhead storage tanks for homes and apartments in areas with no grid power.

4. Community Projects: Solar-powered water kiosks and village water distribution.