WATER FILLED REWINDABLE SUBMERSIBLE MOTORS
“W – Series”

Description :
These motors are eco – friendly wet type, water filled 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. 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. Where the use of anti-freeze agent mixed water is not be allowed for special applications, these motors can also be filled with clear, cold, pure, fresh, filtered water and operated. 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 high axial thrust loads and up thrust loads with minimum wear and tear.

The unique design of thrust bearings creates a wedge of water between the shoe and the disc, and there by it gives 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, shaft seals and sand guard to avoid ingress of well water. Sand and fiber particles into the motor. Care should be taken to ensure that the motor does not run when it is not submerged in the water. To prevent the motor from dry running, install water level monitor/dry run preventor. The motor needs a constant flow of water past it’s body to keep it at correct operating temperature. Ideally, the motor should be set the level at which water enters the bore well. When this level is not ascertained, fit a “Flow inducer pipe” over pumpset to ensure adequate cooling. It is mandatory to install a C.R.I. Control Box for all single phase 3 wire motors. Mounting dimensions of motors are in accordance with NEMA standards.

FEATURES

APPLICATIONS

• Water cooled Re-windable motor
• Can be easily dismantled and repaired
• High operating efficiency
• Extremely hardwearing and water lubricated bearings
• Specially designed thrust bearing to withstand high axial loads
• AISI 630 (17.4 PH) motor shaft extension for longer life

These prime mover submersible motors are suitable to couple with deepwell submersible pumpends used for :

• Residential
• Irrigation
• Fountains
• Industrial water supply
• Pressure boosting units
• Gardens
• Sprinkler systems
• Mining
• Oil and gas
• De-watering
• CBM (coal bed methane)

NOMINAL DIA : 4”

SPECIFICATIONS

Nominal Dia                                                        :  4” (100mm)
Maximum Outer Diameter                          :  98mm (max)
Power Range                                                     :  0.37 kW to 2.2 kW – Single Phase
                                                                                   (Incorporated with Thermal Overload Protector)
                                                                                  0.37 kW to 7.5 kW – Three Phase
Speed                                                                   :  2900 rpm
Version                                                                :  Single Phase – 230 V, 50 Hz, A.C. Supply
                                                                                   Three Phase – 380-415 V, 50 Hz, A.C. Supply
Degree of Protection                                     :  IP 58
Class of insulation                                            :  Y
Direction of Rotation                                      :  CCW – Single Phase
                                                                                   Electrically Reversible – Three Phase
Type of Duty                                                      :  S1 (continuous)
Maximum Down Thrust Load                      :  0.37 kW to 1.1 kW – 650 lbs / 3000N
                                                                                   1.5 kW to 4.0 kW – 900 lbs / 4000N
                                                                                   5.5 kW to 7.5 kW – 1500 lbs / 6500N
Minimum cooling flow along the motor:   0.15 m/sec
Maximum Temperature of Liquid             :  33°C
Starts per Hour                                                 :  20 times
Shaft                                                                     :  Splined as per NEMA standard
Mounting Standard                                         :  NEMA Standard
Method of Starting                                         :  Single Phase – Capacitor Start Capacitor Run (CSCR)
                                                                                   Three Phase – Direct On Line (D.O.L)
Cable Lead Out                                                 :  Permanently Connected and Sealed 3 / 4 core
                                                                                   PVC insulated Flat Cable

Material OF Construction

 Nominal Dia : 6”

SPECIFICATIONS

Nominal Dia                                                        :  6” (150mm)
Maximum Outer Diameter                          :  143mm (max.)
Power Range                                                     :  2.2 kW to 37 kW – Three Phase
Speed                                                                   :  2900 rpm
Versions                                                              :  Three Phase – 380-415 V & 525 V, 50 Hz, A.C. Supply
Degree of Protection                                     :  IP 58
Class of insulation                                            :  Y
Direction of Rotation                                      :  Electrically Reversible – Three Phase
Type Of Duty                                                     :  S1 (continuous)
Maximum Down Thrust Load                      :  2.2 kW to 22 kW – 3500 Ibs / 15500 N
                                                                                   26 kW to 3.7 – 6000 Ibs / 27500 N
Minimum cooling flow along the motor  :  0.15 m/sec
Maximum Temperature of Liquid             :  33°C
Starts per Hour                                                 :  20 times
Shaft                                                                     :  Splined as per NEMA standard
Mounting Standard                                         :  NEMA Standard
Method of starting                                          :  2.2 kW to 3.7 kW Direct On Line (D.O.L)
                                                                                   26 kW to 37 kW Star Delta (S.D)
Cable Leadout                                                   :  Permanently Connected and Sealed 3 / 4 core
                                                                                   PVC insulated Flat Cable

Materials Of Construction

Nominal Dia : 8”
SPECIFICATIONS

Nominal Dia                                                                        :  8” (200mm)
Maximum Outer Diameter                                          :  187mm (max.), 55 & 75 kW – 194mm (max.)
Power Range                                                                     :  15 kW to 75 kW – Three Phase
Speed                                                                                   :  2900 rpm
Version s                                                                              :  Three Phase – 380 – 415 V, 50 Hz, A.C. Supply
Degree of Protection                                                     :  IP 58
Direction of Rotation                                                      :  Electrically Reversible – Three Phase
Type of Duty                                                                      :  S1 (continuous)
Maximum Down Thrust Load                                      :  15 kW to 18.5 kW – 6000 Ibs / 27500 N
                                                                                                   22 kW to 75 kW – 10000 Ibs / 45500 N
Minimum Cooling Flow Along the motor                               :  0.16 m/sec
Maximum Temperature of Liquid                             :  33°C
Starts per Hour                                                                 :  10 times
Shaft                                                                                     :  Splined as per NEMA standard
Mounting Standard                                                         :  NEMA Standard
Method of Starting                                                         :  15 kW to 55 kW Direct On Line (D.O.L)
                                                                                                   15 kW to 75 kW Star Delta (S.D)
Cable Leadout                                                                   :  Permanently Connected and Sealed 3 / 4 core
                                                                                                   PVC insulated Flat Cable

MATERIALS OF CONSTRUCTION

Nominal Diameter : 10”
Specifications

Material of Construction