BALAJI Solar Submersible Pump's motors are designed to operate directly on Solar modules. The system does not contain a Controller and it works uninterruptedly when sufficient sunshine is available. The motor will drive standard multi-stage centrifugal 'pump-ends'. The 'pump-ends' are constructed from marine grade bronze and 304 stainless steel. The impellers and diffusers are constructed from a rugged thermoplastic material and are extremely resistant to mineral and algae deposits. On-site servicing of the 'pump-end' is easily accomplished without the use of specialized tools.
BALAJI Solar Submersible pumps are designed for use in stand-alone water delivery systems. They are pollution - free, corrosion-resistant, self-lubricating and noise-free. Probably there is no better way to provide water for remote homes, campsites, live stocks, small farms as well a many other needs beyond the commercial power grid.
Schematic Diagram of Solar Submersible Pump

Advantages:
- Simplicity: Operates directly on Solar modules or Batteries without a controller or any other electronics.
- User friendly: Does not require any skilled manpower to install a system. Since 'Reverse polarity protection' is incorporated, the system will work but the discharge will be less. Hence it is important to connect the terminals correctly to derive the desired discharge.
- Maintenance free: The brushes used have a life of 20,000 hours of operation, which equals 3000 days of operation at 6 hours per day of usage.
- Overload protection: The built in magnetic drive protects the motor from overload or pump obstruction.
- Flexible to various applications: Wide range of capacities is available. The selection can be made with most efficient 'pump-end' for given head simply by choosing the pump with the best number of stages for desired applications.
The below mentioned data shows typical capacities of BALAJI Submersible solar pumps at various rated voltage operations. The volumes mentioned in the data are based on a Solar radiation of 5.5 kWH/m2/day with suitable tilt angle of the Solar array.
Performance Table:
| Sl.No. | Description | Solar Submersible Pumps |
| 1 |
Model No. |
SCS 18-45 |
SCS 9-100 |
SCS 6-140 |
SCS 2-280 |
SCS 20-200 |
SCS 16-300 |
SCS 3-425 |
SCS 4-650 |
| 2 |
Total Dynamic Head |
70 feet |
150 feet |
200 feet |
300 feet |
300 feet |
450 feet |
550 feet |
880 feet |
| 3 |
Maximum Suction |
NA |
NA |
NA |
NA |
NA |
NA |
NA |
NA |
| 4 |
Water Discharge in
LPM |
115 max. |
72 max. |
40 max. |
20 max. |
140 max. |
100 max. |
25 max. |
30 max. |
| 5 |
Solar Array max. in
Watts |
480 |
720 |
720 |
600 |
2160 |
2400 |
1260 |
2160 |
| 6 |
Efficiency factor measured in liters / watt / day |
50 at 50 feet depth |
21 at 100 feet depth |
16 at 100 feet depth |
7 at 250 feet depth |
13 at 210 feet depth |
7.5 at 350 feet depth |
3.7 at 400 feet depth |
2.5 at 700 feet depth |
| Note: | 1. The Solar array capacity will depend on the Site location and conditions, the above array is
indicative. 2. For any specific application, we can design and offer
Solar Pumping system to meet the site requirements. |
BALAJI can design, supply and install Solar Submersible Pump to meet Customer requirement. SCS lines of brushless DC submersibles have flow rates from 2 GPM to 70 GPM and with total lifts up to 700 feet.
For designing a Solar Submersible system for even greater depths or for more water requirements, please furnish the following information:
- Depth at which water is available
- Depth of the Borehole and inner diameter of borehole
- Total dynamic head required
- Water discharge required per minute or hour
- Location of the site (Country)
- Purpose of water
Click on the links for information on performance curves to meet the requirements.
Chart for SCS 16 - 300 model1 p-1
Chart for SCS 16 - 300 model1 p-2
Chart for SCS 16 - 300 model1 p-3
Click here for the pump selection chart of Model No. SCS 16-300.
Please contact us for any additional information.
Basic data for determining a suitable Solar pump to meet the site requirements.
- Location of the site.
- Total dynamic head that is, the vertical distance from the pumped water level to delivery point plus friction losses.
- Daily water requirement in liters per day.
Applications:
- Village water supply
- Livestock watering
- Remote homes
- Micro-irrigation
- Homes
- Dispensaries & Community Centers
Battery back-up:
Batteries for storage of the electrical energy from the Solar array are very expensive and have a relatively short life.
Instead of storing the Solar energy in batteries, it is much cheaper and more reliable to save energy by storing the water in water storage tank or reservoir.
BALAJI solar pumping systems require no batteries, but an option of an Inverter that works on batteries in conjunction with a "Charge Regulator" is offered, wherever needed.
* Design and technical specifications are subject to change without notice.
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