Companion Traders

These 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. 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 provided in the upper housing.  Should the use of anti-freeze agent mixed water 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 axial thrust loads and upthrust 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 particle 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 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 just below the level at which water enters the bore well. When this level is not ascertained, fit a "Flow inducer pipe" over the pumpset to ensure adequate cooling. It is mandatory to install a C.R.I. Control box for all single phase 3 wire motors.

Nominal Dia

4"

6"

8"

Power Range (kW)

0.37 kW to 2.2 kW - Single Phase

(Incorporated with Thermal

Overload Protector)

0.37 kW to 7.5 kW - Three Phase

2.2 kW to 37 kW - Three Phase

2.2 kW to 30 kW - Three Phase, 575 V

15 kW to 75 kW - Three Phase

Speed

2900 rpm

2900 rpm

2900 rpm

Versions

Single Phase - 220/230 V, 50 Hz, A.C. Supply

Three Phase - 380-415 V, 50 Hz, A.C. Supply

Three Phase - 380V, 415V& 575V 50 Hz, A.C. Supply

Three Phase - 380-415 V, 50 Hz, A.C. Supply

Degree of Protection

IP 58

IP 58

IP 58

Direction of Rotation

CCW - Single Phase

CCW, CW - Three Phase

CCW, CW - Three Phase

CCW, CW - Three Phase

Maximum outer diameter

98 mm (max)

143 mm (max)

187 mm (max)

Type of Duty

S1 (Continuous)

S1 (Continuous)

S1 (Continuous)

Down Thrust Loa

0.37 kW to 0.75 kW - 300 lbs / 1500 N

1.1 kW to 3.0 kW - 650 lbs / 3000 N

4.0 kW to 7.5 kW - 1500 lbs / 6500 N

2.2 kW to 7.5 kW - 1500 lbs / 6500 N

9.3 kW to 15 kW - 3500 lbs / 15500 N

18.5 kW to 37 kW - 6000 lbs / 27500 N

15 kW to 18.5 kW - 6000 lbs/27500 N

22 kW to 45 kW - 10000 lbs/45000 N

55 kW to 75 kW - 12500 lbs/50000 N

Minimum Cooling Flow

along the Motor

0.15 m / sec

0.15 m / sec

0.16 m / sec

Maximum Temperature

of Liquid

33^OC

33^OC

33^OC

Starts per hour

12 Times

12 Times

4 Times

Shaft

Splined as per NEMA Standard

Splined as per NEMA Standard

Splined as per NEMA Standard

Mounting Standard

NEMA Standard

NEMA Standard

NEMA Standard

Method of Starting

Single phase - Capacitor Start Capacitor

Run (CSCR),

Three Phase - Direct online

2.2 kW to 37 kW Direct Online

5.5 kW to 37 kW Star Delta

15 kW to 75 kW Direct Online

15 kW to 75 kW Star Delta

Cable Lead out

Permanently connected and

sealed 3/4 core PVC insulated

Flat cable.

Permanently connected and

sealed 3/4 core PVC insulated

Flat cable.

Permanently connected and

sealed 3/4 core PVC insulated

Flat cable.