All Products >> Agriculture & Residential Pumps >>175mm (7″) 200mm (8″) & 250mm (10″)Borewell Submersible Pumps-CONGO series
  • C.R.I. Borewell Submersible pumpsets are powered by water filled, rewindable submersible

    motor which is suitable for continuous duty. The stator is wound with special waterproof

    synthetic film insulated copper winding wires and made up of low watt loss silicon steel

    laminations assembled under pressure and rigidly locked in stainless steel stator shell.

    Specially designed thrust bearings (SS AISI  420 with Graphite carbon) are used to

    withstand axial and down thrust loads with minimum wear and tear. This 175mm & 200mm

    submersible pumpsets are supplied with 150mm (6″) motor combination and for 250mm

    (10″) submersible pumpsets supplied with 200mm (8″) motor combination only.

    • Domestic
    • Agricultural
    • Irrigation
    • Civil & Industrial water supply
    • Ponds
    • Gardens and mining
    • Fire fighting
    • Pressure boosting

    PUMPED LIQUIDS

    Clean, thin, non-aggressive, non explosive, clear, cold, fresh water without abrasives, solid particles or fiber having the following characteristics.

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    • High operating efficiency
    • Dynamically balanced rotating parts ensures minimum vibration and longer life
    • Designed for wide voltage fluctuations
    • Better efficiency and consistent performance
    • Specially designed thrust bearing to withstand high axial thrust load
    • Motor portion covered with corrosive resistance stainless steel (SS 304) shell

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    SPECIFICATIONS 175mm (6/7″) 200mm (6/8″) 250mm (8/10″)
    Power range 3.7kW – 15 kW (5 HP – 20 HP) 5.5kW – 22kW (7.5 HP – 30 HP) 15kW – 75kW (20 HP – 100 HP)
    Speed 2900 RPM 2900 RPM 2900 RPM
    Version 380- 415 V, Three Phase, 50 Hz, A.C. Supply Three-phase, 380/415 V, 50 Hz, AC supply Three-phase, 380/415 V, 50 Hz, AC supply
    Maximum total head 105 m 297 metre 162 metre
    Maximum flow rate 97.2 m3 /h (27 lps) 136 m /h (37.8 lps) 216 m /h (60 lps)
    Maximum Outer Diameter 165 mm 195 mm 247 mm
    Nominal outlet size 100 mm 80, 100, 125 & 150 mm 150 mm
    Degree of Protection IP 58 IP 58 IP 58
    Direction of Rotation Counter clockwise from driving end. Counter clockwise from driving end. Counter clockwise from driving end.
    Thrust Load 3500 lbs. 5.5 to 15kW 3500 lbs. 7.5kW – 11kW / 6000 lbs. 15kW – 18.5kW /
    10000 lbs. 22kW – 75kW
    6000 lbs.15kW – 18.5kW /
    10000 lbs. 22kW – 75kW
    Minimum cooling flow along the motor 0.16 m/sec 0.16 m/sec 0.16 m/sec
    Type of duty S1 (Continuous) S1 (Continuous) S1 (Continuous)
    Method of starting Direct on Line upto 5.5 kW,SD upto 15 kW SD 5.5kW – 22kW SD 5.5kW – 22kW
    Maximum starts per hour 20 times 10 times 10 times

    MATERIAL OF CONSTRUCTIONS 

    MATERIAL OF CONSTRUCTION OF PUMP
    175mm (7″) Pump 200mm (8″) Pump 250mm (10″) Pump
    Part Name Material Material Material
    Check Valve housing Cast iron Cast iron Cast iron
    Check Valve Seat Nitrile butyl rubber S.G Iron Nitrile Butyl Rubber / S.G Iron
    Diffuser Chamber Cast Iron Cast iron Cast iron
    Impeller SS – 410 SS – 410 LTB – 2 & SS – 410
    Suction Inter Connector Cast Iron Cast iron Cast iron
    Inlet screen SS – 202 SS – 202 SS – 202
    Pump Shaft SS – 410 / SS – 431 SS – 410 / SS – 431 SS – 410 / SS – 431
    Cable Guard SS – 202 SS – 202 SS – 202
    Coupling SS – 410 SS – 410 / SS – 431 SS – 410 / SS – 431
    MATERIAL OF CONSTRUCTION OF MOTOR
    200mm (8″) Motor
    Part Name Material
    Upper and Lower housing Cast iron
    Stator shell SS 304 / SS (DIN 1.4509)
    Shaft EN 8 with SS – 410 /431 sleeve at bush guide
    Journal bushes LTB – 4
    Thrust assembly SS – 420 and Graphite Carbon
    Diaphragm High Nitrile Butyl Rubber

    Characteristics of Clear Cold Water

    CHARACTERISTICS OF CLEAR COLD WATER
    Maximum liquid temperature 33°C (max.)
    Permissible amount of sand 50g/m³ (max.)
    Allowable solid 3000 ppm (max.)
    Chlorine ion density 500 ppm (max.)
    Turbidity 50-ppm silica scale (max.)
    Hardness (Drinking water) 300 (max.)
    Specific gravity 1.004 (max.)
    Viscosity 1.75 x 10 m2 /sec (max.)
    pH Value 6.5 to 8.5

     

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