supply of electric motor pumps to kole padasekharams- supply of submersible axial flow pump at kariyappadam kole padavu supply of electric motor pumps to kole padasekharams- supply of submersible axial flow pump at kariyappadam kole padavu. , supply, installation, testing and commissioning of submersible axial flow pump set with the specification listed below, suitable for handling silty water with small salt particles with rpm 740 ( syn ) or less. the material of construction of the casing, suction bell shall be cifg 260 with 2% nickel, impeller ss316, shaft and sleeve should be ss316and vertical submerged column.the delivery pipe length shall be ( varies from 2 to 6m length as per site conditions ) of ss304 with 6mm minimum thickness. a gi weld mesh made of 6mm thick with metallic strainer of mesh size not more than 50mm x 50mm should be fitted at mouth of suction column. any hanging portion of the pipe should be supported with suitable metallic supporting frames. the prime mover for the pump should be 3 phase tewc squirrel cage submersible induction motor suitable for 415v+ / - 10%, 50 hz+ / - 5% connection with class f insulation, cubicle type ats starter panel board with all necessary protection units and instrumentation. auto transformer starter of reputed make, mccb including suitable metering, led indications, selector switch, single phase and dry run protection wiring and earthing as per regulations and specifications of kseb and electrical inspectorate. suitable water proof, copper power cable about 20m length as per site requirement. a screen with 6mm gi welded mesh with 50mm x 50mm ( about 20sqm area ) framed in gi angles shall be fitted at the openings on top and sides of sump to prevent entry of unwanted material to the pump through inflow water. the rate quoted should inclusive of all charges for supply, installation including petty civil works, trial run and commissioning, all types of transport and conveyance, loading and unloading charges, gst etc , duty point head 5 m, minimum discharge at duty point head ( ips ) : 200 lps, minimum overall efficiency in % : 70; power allocation 30 hp. , duty point head 3 m, minimum discharge at duty point head ( ips ) : 775 lps, minimum overall efficiency in % : 70; power allocation 50 hp.