Submersible Pump for Solar Systems SQF 1.2-3

The Grundfos SQF 1.2-3 submersible pump is an advanced solution for pumping systems powered by renewable energy sources, such as solar and wind energy. This pump is specifically designed for groundwater supply applications in agriculture, as well as community water supply systems in rural and remote areas. Its versatility in terms of the type of energy it uses makes it an ideal option for locations where energy availability is limited or intermittent.

Main features:

• Compatibility with renewable energy: The Grundfos SQF 1.2-3 is compatible with solar, wind, and alternating current (AC) energy sources, offering flexibility regarding the available electrical supply. This makes it an ideal pump for remote areas and sustainable applications.
• Advanced protection: The pump is equipped with a system of protection against dry running, overloads, and incorrect voltages, ensuring a long service life and reducing the risk of costly breakdowns.
• Optimised performance: With a maximum power point tracking (MPPT) system, the pump adjusts its performance to maximise efficiency according to the available energy conditions, ensuring a constant water supply.

Innovative technology and design:

The Grundfos SQF 1.2-3 pump features a compact and durable design, ideal for operation in small diameter wells and demanding conditions. It is manufactured with high-quality materials, such as AISI 304 stainless steel (DIN W.-Nr. 1.4301) for the pump body, impeller, and motor, providing corrosion resistance and reliable operation in harsh environments.

• Stainless steel impeller: The impeller is designed to ensure efficient flow at low flow rates, allowing the pump to deliver reliable performance even at high lifting heights.
• High-performance motor: The pump's MSF3 motor operates at a nominal speed of 3600 rpm, ensuring efficient pumping in all conditions.

Relevant technical data:

• Flow rate and head: This pump is suitable for pumping applications that require low flow rates with high heads, providing a constant supply in agricultural and community applications.
• Maximum pressure: With a working pressure of up to 15 bar, the SQF 1.2-3 can handle high-pressure applications without compromising performance.
• Minimum well diameter: The minimum well diameter in which the pump can be installed is 76 mm, making it suitable for a wide range of wells and boreholes.

Electrical data and protection:

• Versatile power source: The SQF 1.2-3 pump operates with both alternating current (AC) and direct current (DC), allowing its use with solar panels, wind turbines, or electric generators. Its wide voltage range allows it to operate between 30-300 V DC and 90-240 V AC, ensuring its functionality in various configurations.
• IP68 protection: The pump is fully protected against dust ingress and is submersible, ensuring its durability and resilience in demanding aquatic environments.
• Insulation class F: The pump motor has an insulation class F, providing greater heat resistance and ensuring safe long-term operation.

Flexible installation and reduced maintenance:

The installation of the Grundfos SQF 1.2-3 is straightforward, thanks to its compact design and its ability to adapt to various energy configurations. The pump is equipped with a non-return valve, preventing backflow and improving system efficiency. Additionally, its low maintenance requirement makes it an ideal option for hard-to-reach areas.

• Standard connections: The pump features a Rp 1 1/4 inch connection, facilitating its integration into common piping systems.
• Cable length: The pump includes a 2-metre power cable, providing the necessary flexibility for installation in various locations.

Recommended applications:

The Grundfos SQF 1.2-3 is ideal for a variety of applications in sustainable water pumping systems, including:

• Water supply for rural communities.
• Solar or wind-powered agricultural irrigation systems.
• Potable water supply systems in areas without access to the electrical grid.
• Water supply in isolated sites or where a reliable, autonomous solution is required.