OMI Solar Openwell Submersible pump is a product developed by the continuous efforts and innovation of our R&D Team with prime experience in manufacturing pumps for the past 50 years. These pumps are manufactured with utmost care and perfection to give a trouble-free and efficient performance like our virtuous customer service.
OUR PRODUCTS
Solar Open Well Submersible Pump (Ac)
Power Range
3 HP – 20 HP
Phase / Voltage Range
350 – 415V, Three Phase, 50 Hz, A.C. Supply
Maximum total head
175 meter
Maximum flow rate
96000 lph
Nominal outlet size
2”,2.5”3 (50, 65,80 mm)
Rotor
Copper Brazed Rotor
Bush
LTB 4 Bush / Carbon
Bearing
SS with Carbon
Impeller
Cast Iron
Casing
Cast Iron
Body
Cast Iron
Applications
Material of Construction of Motor
Part Name
Material
Pump Volute Casing
Cast Iron
Stator Shell
Cast Iron
Impeller
Cast Iron
Shaft
SS 410
Journal Bearings
Leaded Tin Bronze
Thrust Assembly
Stainless Steel 420 with Graphite Carbon
About the Submersible Pump Motor
The heart of this pump is a water-cooled induction submersible pump motor designed specifically for continuous operation in submerged open well environments. Unlike air-cooled motors that depend on ambient conditions, a water-cooled submersible pump motor uses the surrounding water to regulate temperature — allowing sustained, high-load operation without overheating, even during peak irrigation hours.
Motor construction details:
- Insulation class: F-class winding insulation for high-temperature tolerance
- Cooling method: Water-cooled — motor is fully submerged during operation
- Voltage tolerance: Operates reliably across 350–415V, three-phase, 50 Hz AC, with built-in tolerance for the voltage fluctuations common in rural grid connections
- Thermal protection: Integrated thermal overload protector automatically shuts the motor down if temperature exceeds safe limits, preventing winding damage
- Cable entry: Resin-filled cable connectors prevent water infiltration at the entry point — a common failure point on lower-quality motors
- Winding: High-grade copper windings with full rewindability — the motor can be serviced and rewound locally without replacing the entire unit
- Rotating parts: Dynamically balanced impeller and shaft assembly to minimise vibration and bearing wear over extended operation cycles
This submersible pump motor is built to be repairable, not disposable. OMI’s service network in Tamil Nadu and across India supports local rewinding and maintenance, keeping long-term running costs low for farmers and industrial operators.
Applications of the OMI Solar Openwell Submersible Pump
This solar-powered openwell submersible is used across a wide range of sectors where reliable, high-volume water lifting from surface sources is required:
Agriculture & Irrigation
The most common application. Farmers across Tamil Nadu, Andhra Pradesh, Karnataka, and Maharashtra use this pump to lift water from open farm wells and supply it to drip or sprinkler irrigation systems. Running on solar power, it operates with zero fuel cost during daylight hours and is eligible for subsidy consideration under government solar pump schemes.
Civil & Municipal Water Supply
Used in municipal water supply systems where water is drawn from open reservoirs or storage tanks and distributed to residential or commercial areas. The 96,000 LPH discharge capacity makes it suitable for high-rise buildings and housing layouts.
Industrial Water Circulation
Factories, processing plants, and cooling systems that require continuous water circulation from ground-level tanks or reservoirs use this unit for its consistent performance and low maintenance requirements.
High-Rise Buildings & Pressure Boosting
When combined with a pressure tank and control panel, this submersible pump motor configuration is used to boost water pressure for multi-floor apartment complexes, hotels, and hospitals.
Fountains & Water Features
High-flow, low-noise operation makes it appropriate for decorative fountains and large water feature installations in commercial and hospitality settings.
FAQ
What is the difference between an openwell submersible pump and a borewell pump?
An openwell submersible is designed for large-diameter open water sources — wells, tanks, and ponds. It has a wider motor body and can handle higher flow rates. A borewell pump is built for narrow drilled borewells (typically 80mm–250mm diameter) and is used for deeper groundwater extraction. If your water source is an open well or tank, an openwell submersible is the correct choice.
What HP openwell submersible pump do I need for farm irrigation?
The OMI Solar Submersible Pump (AC) is available for bore sizes from 3 inches (80mm) up to 8 inches (200mm). The correct bore size depends on your existing borewell casing diameter. Always match the pump diameter to your borewell — installing an oversized pump risks jamming, while an undersized one reduces flow efficiency. If you are unsure of your borewell casing size, call OMI at +91 9360078009 before ordering.
Can this openwell submersible pump run directly on solar panels without a battery?
Yes. The AC version runs on a solar VFD (Variable Frequency Drive) controller that converts DC power from solar panels directly into AC power for the motor. No battery bank is required for daytime operation. The pump runs when sunlight is available and automatically stops when light drops below operating threshold. For 24-hour operation, a battery storage system or grid hybrid setup is needed.