retender supply, installation, testing, trial run and commissioning of centrifugal monoblock pump sets to be purchased at chengannur lac, alappuzha retender supply, installation, testing, trial run and commissioning of centrifugal monoblock pump sets to be purchased at chengannur lac, alappuzha district of kerala , supply, installation, testing, trial run and commissioning of centrifugal monoblock pump sets suitable for irrigation with the specifications listed below: suitable for handling fresh and silty water with rpm 1440 ( syn ) or less. the material of construction of the casing and impeller shall be cast iron and carbon steel shaft. delivery pipe should be of heavy duty flexible hose of length 5-10 m as per the site requirement. the primemover for the pump should be 3 phase totally enclosed fan cooled motor confirming to is325 / 1978, energy efficient eeff1 / ie2 ratings suitable for415 v ( -15% and +6% ) , 50 hz + / -5% connection with class “a” insulation, 10mm 3 core wire 15m as per site condition, ktype foot valve having isi mark, meter board with fuse as per kseb specification and electrical inspectorate norms, prefabricated closed type control panel board completed wired and fitted with fully automatic star delta starter, main switch with isi mark, ammeter, volt meter, selected switch, vss indicating lamps ryb 32x415 v fuse, hrcfuse, elcb, suitable capacitor, spp fuse neutral link, 2 nos. of earth pit suitable for motor as per kseb specification, with all necessary protection units and instrumentation. the rate quoted should inclusive of all the charges for supply, installation including petty civil works, trial run and commissioning, all type of transportation and conveyance, loading and unloading charges, gst etc , working discharge range ( lps ) : 60 - 40 working head range ( m ) : 5 - 10 available connected load ( hp ) : 7.5 npsh : = 6 minimum overall efficiency : 60 % , working discharge range ( lps ) : 70 - 30 working head range ( m ) : 6 - 14 available connected load ( hp ) : 10 npsh : = 6 minimum overall efficiency : 60 %