Motors Water Filled Rewindable

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Description

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.

Specifications

Nominal Dia 4″ (100 mm) 6″ (150 mm) 8″ (200 mm) 10″ (250 mm)
Power Range (kW) 0.5HP to 10HP Three phase 3HP to 60HP Three phase 10HP to 125HP Three phase 110HP to 152HP Three phase
Speed 3450 rpm 3450 rpm 3450 rpm 3450 rpm
Versions A.C. Three phase 220 V, 380 V, 460 V – 60 Hz A.C. Three phase 220 V / 380 V / 460 V & 575 V – 60 Hz A.C. Three phase 380 V / 460 V – 60 Hz A.C. Three phase 380 V / 460 V – 60 Hz
Maximum Down
Thrust Load
0.5 HP to 2 HP – 800 lbs
3 HP to 10 HP – 1500 lbs
3 HP to 30 HP – 3500 lbs
35 HP to 60 HP – 6000 lbs
10 HP to 20 HP – 6000 lbs
30 HP to 60 HP – 10000 lbs
75 HP to 125 HP – 12500 lbs
110 HP – 250 HP
16860 lbs
Degree of Protection IP 58 IP 58 IP 58 IP 68
Class of Insulation Y Y Y Y
Direction of Rotation CCW- 1 Ph
CW,CCW-3 Ph
CCW- 1 Ph CW,CCW-3 Ph CW,CCW-3 Ph CW,CCW-3 Ph
Maximum outer diameter 3.85 inches 5.67 inches 7.67 inches 9.1 inches
Type of Duty S1 (Continuous) S1 (Continuous) S1 (Continuous) S1 (Continuous)
Down Thrust Load 0.5to 2 HP 800 lbs
3 to 7.5 HP 1500 lbs
3 to 30 HP 3500 lbs
35 to 50 HP 6000 lbs
10 to 20 HP 6000 lbs
30 to 60 HP 10000 lbs
75 to 125 HP 12500 lbs
110 to 250 HP 16860 lbs
Minimum Cooling Flow
along the Motor
0.25 ft/ sec 0.5 ft / sec 0.5 ft / sec 0.5 ft / sec
Maximum Temperature
of Liquid
91.4° F (158°C) 91.4° F (158°C) 91.4° F (158°C) 91.4° F (158°C)
Starts per hour 20 Times 20 Times 10 Times 10 Times
Shaft Splined Splined Splined Splined / Key Type
Mounting Standard NEMA Standard NEMA Standard NEMA Standard NEMA / International Standard
Available M.O.C Type : A & N Type : A, B & N Type : A, B & N Type : A, B & N

Features

  • 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

Materials of Construction

Part Name Type – A (Available Motor DIA- 4″, 6″, 8″) Type – B (Available Motor DIA – 6″, 8″)
Stator Shell S.S. 304 S.S.304
Shaft Extension S.S. 304 S.S.304
Thrust Bearing S.S. 420 / Graphite Carbon S.S.420/Graphite Carbon
Bearing Bushes Graphite Carbon Graphite Carbon
Shaft Seal Nitrile Rubber(NBR) Nitrile Rubber(NBR)
Diaphram Nitrile Rubber(NBR) Nitrile Rubber(NBR)

Applications

  • Irrigation
  • Residential
  • Irrigation
  • Fountains
  • Industrial water supply
  • Pressure boosting units
  • Gardens
  • Sprinkler Systems
  • Mining
  • Oil & Gas
  • De-watering
  • CBM (Coal bed methane)

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