SDS-T-128 Submersible Solar Pump
The product is a low cost, positive displacement submersible solar pump.
The Sun Pumps SDS Submersible Pump Series is comprised of eleven pump modules. The SDS (Model T-128) Submersible Pump is a solar powered submersible pump for lower water volumes from shallow depths. The pump can be powered by solar panels or batters and can use a range of DC voltage from 12 V to 30 V.
SunPumps sells its products through over 80 dealers around the world, including in Ecuador, Puerto Rico, Tanzania, United Arab Emirates, Spain, Ireland, India, Australia
Goal 6: Clean water and sanitation
This pump is designed to be used in areas that need water access but do not have reliable grid energy.
Mass produced in Safford, Arizona.Interview with representative
Sun Pump is trademarked and the SDS-T-128 Submersible Solar Pump is patented.
Representative estimated over 500+ in 2014. Interview with representative
Description of the pump type
Power required, measured in watts
Manufacturer-specified discharge rate, measured at a specific head
Maximum depth of water the pump can pull
Piston nominal diameter, measured in centimeters
SDS-T-128 pump is a displacement submersible pumps constructed of ryton and 316 Stainless Steel. It operates on a range of DC voltages from 12 V to 30 V, which can come from solar panels or batteries. The pump is sized to for use in 4 in well casings.
The SDS (Model T-128) Submersible Pump has the following dimensions:
• Diameter (cm): 9.65
• Height (cm): 31.1
• Weight (kg): 5
• Shipping weight (kg): 5.9
This pdf shows an assembly schematic.
Pump schematic is shown below.
Replacement components are available for purchase from manufacturer or dealers and are listed as Rebuild Kits.
Sun Pumps offers a limited warranty from 12 to 18 months, if the purchaser completes and sends in the warranty registration card. Instructions and warranty information available online. Lifespan depends upon the usage, amp draw, well depth, etc.Interview with representative
Manufacturer specified performance targets include being high quality and low voltage DC pumps.
Performance vetted by manufacturer but not a third-party.
• Max Flow Rate: 2.0 GPM (7.6 LPM)
• Maximum Head: 230 ft (70 m)
• Max Watts: 126 W
• Max Motor Amps: 4.2 amp
The pump curve showing the flow rates at various total heads within the possible voltage ranges is shown here.
No third-party organizations, only testing performed by the manufacturer.
Safety precautions can be found on page 3 of this document.
A water storage tank is needed for cloudy days when the pump may not produce as much water. Other equipment that is needed includes a solar panel, cables, and batteries.
Meah, K., Fletcher, S., Ula, S., 2008, “Solar photovoltaic water pumping for remote locations,” Renewable and Sustainable Energy Reviews, 12, pp. 472-487.
Alawaji, S., Smiai, M. S., Rafique, S., Stafford, B., 1995, “PV-powered water pumping and desalination plant for remote areas in Saudi Arabia,” Applied Energy, 52, pp. 283-289.
Ghoneim, A. A., 2006, “Design optimization of photovoltic powered water pumping systems,” Energy Conversion and Management,47, pp. 1449-1463.
Video on how to install an SDS pump.
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