supply, installation, testing, trial run and commissioning of suitable high discharge at low head submersible pumpsets at chengannur lac and cheriyanad grama panchayat, alappuzha district of kerala supply, installation, testing, trial run and commissioning of suitable high discharge at low head submersible pumpsets at chengannur lac and cheriyanad grama panchayat, alappuzha district of kerala , supply, installation, testing, trial run and commissioning of suitable high discharge at low head submersible pumpsets with the specifications listed below: suitable for handling fresh and silty water with rpm 960 ( syn ) or less. the material of construction of the casing and suction bell shall be ci with 2% nickel, impeller, and shaft shall be of ss of suitable grade and vertical submerged column pipe and delivery pipe ( varies from 5 to 10 m length as persite conditions ) of ms ( is 226 ) with 6 mm minimum thickness. a metallic non- corrosive strainer of mesh size not more than 50mm x 50mmshouldbefitted atmouth ofsuction column. any hanging portion of the delivery pipe should be supported with suitable metallic supporting frames or rcc pillars of suitable size as per site requirements.the prime mover for the pump should be 3 phase tewc squirrel cage submersible induction motor 415 v -15% , +6%, 50 hz + / - 5% connection with class “f”insulation, cubicle type panel board with all necessary protection units and instrumentation. auto transformer starter of reputed make , mccb includingsuitable metering, led indications, selector switch, single phase and dry running preventer, suitable capacitor etc., wiring and earthing should be as per regulations and specifications of kseb and electrical inspectorate. suitable water proof, copper powercable 10 mm three core about 20.00 m length or as per the site requirement. a screen with 6 mm gi weldedmeshwith50mmx50mmopening size ( about20sqmarea ) framedin giangles and gi tubes shall be fitted at the openings on top and sides of sump to prevent entry of unwanted materials to the pump through inflow water. the rate quoted should inclusive all the charges for supply, installation including pettycivil works, trial run and commissioning, all type of transportation and conveyance, loading and unloadingcharges, charges for factory testing , gst etc. , duty point head ( m ) : 3.5 minimum discharge at duty point head ( lps ) : 180 working head range ( m ) : 0.5-5 minimum overall efficiency ( % ) : 65 available connected load: 20 hp , duty point head ( m ) : 3.5 minimum discharge at duty point head ( lps ) : 200 working head range ( m ) : 0.5-5 minimum overall efficiency ( % ) : 65 available connected load: 25 hp , duty point head ( m ) : 3.5 minimum discharge at duty point head ( lps ) : 250 working head range ( m ) : 0.5-5 minimum overall efficiency ( % ) : 65 available connected load: 30 hp