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. The motor features water lubricated thrust and journal bearings. The pre-filled level of water inside the motor is important, and if any loss of volume is noticed, the motor should be refilled with clear, cold, pure, fresh, filtered water. The dynamically balanced rotors maintain uniform clearance thereby giving better efficiency and increase the life cycle of the water lubricated bush bearings. The thrust bearings are unique in that they create 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. The pressure equalizing rubber diaphragm is provided to guard the pressure and volume variations of the water inside the motor. The motor sealing are made by means of O rings. The shaft seals and sand guard prevents ingress of well water. sand and fiber particles into the motor. The motor needs a constant flow of water past its body to keep it at correct operating temperature. The motor should be set just below the level at which water enters the bore well. When this level is not
4" Submersible Water Filled Rewindable Motors
Description
Motor power in kW
2.2
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 single phase and three phase power supply. All single phase motors are thermally protected . 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
4"
Series
Water Filled Rewindable Submersible Motors
Power Range kW
Single Phase : 0.37 2.2kW, Three Phase : 0.37 7.5kW ,* Single phase motors are thermally protected.
Speed
2900 rpm
Versions
Single Phase : 230V 50Hz, Three Phase : 380V -415V, 50Hz
Method of Starting
Single Phase Capacitor Star Capacitor Run (CSCR), Three Phase Direct On Line(DOL).
Maximum Down Thrust Load
0.37 1.5kW 3000N, 2.2 7.5 kW 6500N
Type of Duty
S1 (Continuous)
Degree of Protection
IP 58
Class of Insulation
Y
Max.Temperature of Liquid
30?C
Minimum Cooling Flow Along the Motor
0.5 m/sec
Starts per Hour
Single Phase 20 Times, Three Phase 12 Times
Available M.O.C
Type A & N
Features
High efficiency
Water lubricated rewindable motor
Thermal protection in single phase motors
Extremely hardwearing and water lubricated bearings
Corrosion resistant stainless steel motor body
Can be easily dismantled and repaired
Application
Residence
Agriculture
Gardens
Sprinkler systems
Fountains
Building services
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