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C.R.I. 200 mm (8�) Borewell Submersible pumpsets are made up with different materials of construction together with extremely tough hardwearing bushes which make these pumpsets highly durable. These pumpsets are supplied with stainless steel & LTB-2 impellers to give better performance and longer life. The optimal design of impellers and diffusers offers best possible hydraulic efficiency. These 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. Dynamically balanced rotor gives vibration free and noise free operation, thereby increases efficiency and life cycle of the motor. FEATURES
- Pumps are designed to give more discharge
- Extremely hard wearing water - lubricated bearings
- Designed for extensive voltage fluctuations
- Silver brazed rotor
- 6� motor and 8� pump combination on request
- Dynamically balanced rotating parts
MOC
| 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 |
SPECIFICATIONS
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| 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 |
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