S UBMERSIBLE M OTOR Prepared By SHAILESH J. PARMAR Enrollment No. - ( ) Sem-6 th (Electrical Engineering) Dr. Subhash Technical Campus, Junagadh 1 9 March 2016

I NTRODUCTION Submersible motor is a squirrel cage induction motor filled with clean cold water and are available in single phase and three phase design. A submersible pump is a pump that is able to be placed underwater and still carry out its intended purpose. Some pumps may be designed to work while being fully submerged, whereas others may be submerged or placed in a dry area. In this motor bearing bushes and thrust bearings of S.S. & carbon are water cooled. High quality pvc insulated winding wire and cable is used. This motor is widely used in the agricultural application. 2 9 March 2016

W ORKING P RINCIPLE The submersible pumps used in ESP installations are multistage centrifugal pumps operating in a vertical position. Although their constructional and operational features underwent a continuous evolution over the years, their basic operational principle remained the same. Produced liquids, after being subjected to great centrifugal forces caused by the high rotational speed of the impeller, lose their kinetic energy in the diffuser where a conversion of kinetic to pressure energy takes place. 3 9 March 2016

C LASSIFICATION OF S UBMERSIBLE MOTOR Submersible Motor Openwell Horisontal Vertical MonoblockBorewell Domestic Agriculture Self Priming 4 9 March 2016

L AYOUT & S PECIFICATION OF S UBMERSIBLE M OTORS Horizontal Submersible Motor Horizontal Submersible motor is one type of Openwell Submersible motor. Available in Single Phase 0.5 HP to 3.0 HP. Available in Three Phase 1.0 HP to 3.0 HP. Head Range 60 to 110 feet (Upto 35 Mtrs). Flow Range 300 LPM. 5 9 March 2016

Cross sectional View Horizontal Submersible Motor 6 9 March 2016

Vertical Submersible Motor ( Domestic) Available in Single Phase 3.0 HP to 5.0 HP (2.2Kw to 3.7Kw) & Three Phase 3.0 HP to 15.0 HP (2.2Kw to 11Kw) Head Range 80’ to 380’ feet. (Up to 114 Meters). Flow Range 1200 Lpm. Vertical Submersible Motor ( Agricultural) Available in Single Phase 3.0 HP to 5.0 HP (2.2Kw to 3.7Kw) & Three Phase 3.0 HP to 15.0 HP (2.2Kw to 11Kw) Head Range 80’ to 380’ feet. (Up to 114 Meters) Flow Range 1200 Lpm. 7 9 March 2016

Self-Priming Monoblock Motor Available in Single Phase 0.5 HP to 1.0 HP. Heavy / Thick Aluminum Body. High graded casting employed Stamping: M-45 Grade Silicon. Forged Gun Metal Impeller. Highly efficient & save electricity by 30% - 40 % more in comparison to others. Easy and Negligible need for maintenance. Usage: Domestic/ Gardening/ Individual water supply. 8 9 March 2016

Borwell Submersible Motor There are number of model of the borwell submersible motor are available like V3,V4,V5,etc. Here are the specification of V7. Pump Outer Diameter 155mm and motor Outer Diameter 6" (142mm ) Working condition for head range 80 feet to 462 feet (Upto 140 Mtrs). Flow range upto 1500 LPM. 9 9 March 2016

Cross sectional View Borwell Submersible Motor 10 9 March 2016

Electric Motor Connector to power system Housing Rotor Rotor Bearing 11 9 March 2016

P UMPING A CCESSORIES 12 9 March 2016

A PPLICATIONS OF S UBMERSIBLE M OTOR Single stage pumps are used for drainage, sewage pumping, general industrial pumping. For high head application Borewell motor is used. Drinking water needs in cities and villages. Waterworks, private households and small farms. Cooling & pressure boosting system in industrial application. Water supply for dairies, breweries and mineral water bottling and pouch plants. Used for fountains and in green houses. Irrigation -open, drip or sprinkling system in gardening, agriculture,forestry as for fist ponds March 2016

A DVANTAGES Efficiency: Compared to the ordinary pumps, the submersible pumps are more efficient as it pumps liquid which is close to the ordinary pumps. As these pumps are placed inside the sumps, it can detect the level of water quite easily. Noice level: The submetsible pumps produce less amount of noice as it is submerged under wster. Safe: These pumps are quite safe compared to the other types of pumps as all the placed under water March 2016

D ISADVANTAGES The most disadvantage of these pumps is that you put it in the water. This means it will have a shorter life because of in the water. There is the chance the pump will become corroded and lose its seals, thus allowing liquid to penetrate into the motor housing and causing substantial damage to the unit March 2016

C ONCLUSION The submersible pump was driven by its own power source mains electricity or generator, so the eductor trucks could switch off their engines while being filled. This reduced fuel costs to the eductor companies. It reduced the amount of noise generated by the works, such that there was a noticeable reduction in impact on adjoining residents. This was the same pattern for both the mains electricity version, and the generator-driven version, which was extensively sound-proofed March 2016

R EFERENCE voltage-ac-motors 2/ March 2016

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