Water Filled Rewindable Submersible Motors W-Series

W-SERIES-Water-Filled-Rewindable-Motors

C.R.I. Sumersible Motors are eco-friendly wet type, waterfilled rewindable. The stator windings are of water proof synthetic film insulated copper winding wires. It features water lubricated thrust and journal bearings. 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. Dynamically balanced rotors of these 'W' series motors maintain uniform clearance there by giving better efficiency and increase the life cycle of the water lubricated bush bearings. Specially designed high performance thrust bearings are used that can withstand axial thrust loads and upthrust loads with minimum wear and tear. 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, shaft seals and sand guard to avoid ingress of well water, sand and fiber particle into the motor.Mounting dimensions are in accordance with the NEMA mounting standard.

Nominal Dia 4" 6" 8" 10"
Power Range (kW) 0.37 to 2.2 kW-1Ph
(with in-built TOP*)
0.37  to 7.5 kW - 3 Ph
5.5 to 45 kW - 3 Ph 37 to 93 kW - 3 Ph 81 to 185 kW -3 Ph
Speed 2900 rpm 2900 rpm 2900 rpm 2900 rpm
Versions AC, 1 Ph, 230V
AC, 3 Ph, 380/415V
AC, 3 Ph, 380/415V AC, 3 Ph, 380/415V AC, 3 Ph, 380/415V
Degree of Protection IP 58 IP 58 IP 58 IP 58
Direction of Rotation CCW - 1 Ph         CCW, CW - 3 Ph CCW, CW - 3 Ph CCW, CW - 3 Ph CCW, CW - 3 Ph
Maximum outer diameter 98 mm (max) 144 mm (max) 195 mm (max) 231 mm (max)
Type of Duty S1 (Continuous) S1 (Continuous) S1 (Continuous) S1 (Continuous)
Down Thrust Load 0.37 kW to 1.5kW - 3000N
2.20 kW to 7.5 kW - 6500 N
5.5 kW to 22 kW - 15500 N

26kW to 45 kW -  27500 N
15 kW to 18.5 kW - 27000 N

22 kW to 93 kW -  45500 N
75000 N
Min. Cooling Flow
required
0.15 m / sec 0.15 m / sec 0.15 m / sec 0.15 m / sec
Max.Temperature
of Liquid
33°C 33°C 33°C 33°C
Starts per hour 20 Times 20 Times 10 Times 10 Times
Shaft Splined as per NEMA Standard Splined as per NEMA Standard Splined as per NEMA Standard Spliend / Key type
Mounting Standard NEMA Standard NEMA Standard NEMA Standard NEMA / International Standard
Method of Starting 1 Ph - CSCR
3 Ph - Direct online[DOL]

DOL & Star-Delta [SD]

DOL & SD

DOL & SD

Cable Lead out Permanently connected and
sealed 3 or 4 core Rubber insulated
Flat cable.
Permanently connected and
sealed 3 or 4 core Rubber insulated
Flat cable.
Permanently connected and
sealed 3 or 4 core Rubber insulated
Flat cable.
Permanently connected and
sealed 3 or 4 core Rubber insulated
Flat cable.
* Thermal Overload Protector
  • Water cooled rewindable motor
  • Can be easily dismantled and repaired
  • High operating efficiency
  • Extremely hardwearing water lubricated bearings
  • Specially designed thrust bearing to withstand high axial and down thrust loads
  • AISI 630 (17- 4PH) motor shaft extension for longer life
Part Name Type - A (Available Motor Dia- 4", 6", 8") Type - B (Available Motor Dia - 6", 8", 10")
Stator Shell SS 304 SS 304
Shaft Extension SS 304 SS 304
Thrust Bearing SS 420 / Graphite Carbon SS 420/Graphite Carbon
Bearing Bushes Graphite Carbon Graphite Carbon
Shaft Seal Nitrile Rubber(NBR) Nitrile Rubber(NBR)
Diaphram Nitrile Rubber(NBR) Nitrile Rubber(NBR)
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