Description
This is a description of a W Series Motor, which is an eco-friendly wet type, water filled rewindable motor. The stator windings are of water proof synthetic film insulated copper winding wires. It features water lubricated thrust and journal bearings. The motor is pre-filled with clear, cold, pure, fresh, filtered water. However, on request motors can be pre-filled with water and propylene glycol (Anti-freeze agent) for places where the temperature is below the freezing conditions. Before commissioning, ensure the pre-filled level of water inside the motor. If any loss of volume is noticed, refill with clear, cold, pure, fresh, filtered water, through water filling plugs / valves provided in the upper housing.
The dynamically balanced rotors of these W series motors maintain uniform clearance thereby giving better efficiency and increase the life cycle of the water lubricated bush bearings. The unique design of thrust bearings creates a wedge of water between the shoe and the disc, and thereby providing better water lubrication and increases the life cycle of the thrust bearings. Pressure equalizing rubber diaphragm is provided to guard the pressure and volume variations of the water inside the motor. Motor sealing are made by means of O rings
6" Submersible Water Filled Rewindable Motors
Description
Three Phase Dol
Motor power in kW
7.5
C.R.I. "W series" motors are deep well / bore hole rewindable submersible type, pre-filled with water, which acts as coolant and lubricant. These motors are available in three phase power supply and suitable for both normal & high temperature applications. Rotors are supported with bush and thrust bearings to withstand maximum axial and radial thrust loads. All mounting dimensions are in accordance with NEMA standards.
Specification
Nominal Diameter
6"
Series
Water Filled Rewindable Submersible Motors
Power Range kW
Three Phase : 2.2 45 kW
Speed
2900 rpm
Versions
Three Phase : 380V 415V, 525V, 50Hz
Method of Starting
2.2kW 45kW Direct On Line (DOL), 5.5kW 45kW Star Delta (SD)
Maximum Down Thrust Load
2.2 22kW 15000N, 26 45 kW 27500N
Type of Duty
S1 (Continuous)
Degree of Protection
IP 68
Class of Insulation
Y
Max.Temperature of Liquid
Standard 30?C , High Temperature 50?C
Minimum Cooling Flow Along the Motor
0.5 m/sec
Starts per Hour
12 Times
Available M.O.C
Type A,B,N ,S,T
Features
High efficiency
Water lubricated rewindable motor
Corrosion resistant stainless steel motor body
Extremely hardwearing and water lubricated bearings
Special design for hot water
Can be easily dismantled and repaired
Application
Water supply
Industries
Agriculture
Commercial buildings
Pressure boosting
Livestock watering
Fire fighting
Sprinkler and pivot irrigation system
Construction & mining De-watering
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