औद्योगिक पंप » 200 mm (8 inch) Borewell Submersible Pumps - CR & CM Series

C.R.I. 200 mm (8”) Borewell submersible pumpsets are with different materials of construction together with extremely hardwearing bushes makes highly durable pump. These pumps are supplied with stainless steel & LTB-2 impellers to give better performance and longer life and other vital components like check valve housing, stage bowls and suction inter connector are made of graded cast iron. The optimal design of impellers and diffusers offers best possible hydraulic efficiency. These pumps are powered by a water filled, rewindable submersible motor suitable for continuous duty. The stator is wound with special water proof synthetic film insulated copper winding wires and made up of low watt loss steel laminations assembled under pressure and rigidly locked in stainless steel stator shell. Specially designed thrust bearings (SS with Carbon) are used to withstand axial and down thrust loads with minimum wear and tear. Dynamically balanced rotor gives vibration free and noise free operation, thereby increases efficiency and life cycle of the motor.
SPECIFICATIONS
Power range 5.5kW – 93kW (7.5 HP – 125 HP)
Speed 2880 RPM
Version Three Phase, 380- 415 V,   50 Hz, A.C. Supply
Maximum total head 292 m
Maximum flow rate   45 lps
Nominal outlet size in mm 80, 100, 125 & 150
Degree of Rotation Clockwise from driving end.
Direction of Protection IP 58
Type of Duty S1 (Continuous)
Thrust Load 3500 lbs. 5.5kW - 11kW / 6000 lbs. 15kW - 18kW,
10000 lbs. 22kW - 93kW
Minimum cooling flow along the motor 0.16 m/sec
Method of starting S/D 7.5kW - 93kW DOL upto 5.5kW, SD upto 93kW
Maximum Outer Diameter in mm Ø187 upto 40 HP / Ø194.0 – 50 to 125 HP
Maximum starts per hour 4 times
  • Pumps are designed to give more discharge
  • Extremely hard wearing water - lubricated bearings
  • Designed for wide voltage fluctuations
  • Silver brazed rotor
  • 6” motor and 8” pump combination on request
  • Dynamically balanced rotating parts
MATERIAL OF CONSTRUCTION OF PUMP
Part Name Material
Check Valve housing Cast iron (FG 200)
Check Valve seat S.G Iron
Diffuser chamber Cast Iron (FG 250)
Impeller SS AISI -  304 / 410 SS AISI - 410  (casted) / LTB 2
Suction Inter Connector Cast iron (FG 200)
Inlet Screen SS AISI - 202
Pump Shaft SS AISI - 410 / SS AISI - 431
Cable Guard SS AISI - 202
Coupling SS AISI - 410 / SS AISI - 431
 
MATERIAL OF CONSTRUCITON OF MOTOR
Part Name Material
Diaphragm High Nitrile butyl rubber
Journal bushes LTB - 4 / Graphite Carbon
Thrust Assembly SS AISI 420 and Graphite Carbon
Lower / Upper housing Cast iron (FG 200)/(with outer shell SS AISI 304 - on request)
Stator shell SS AISI 304
Shaft EN 8 with SS - 410/431 sleeve at bush guide
8 inch Submersible Pumps
 
 
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