Public Works Department Tender

Multistage Horizontal Centrifugal Pump / Split Casing with SS Impeller, Cast Iron/S.G Iron casing/WCB, mechanical Seal, bearing lubrication oil, Coupled to energy efficient squirrel cage induction Motor resting on a M.S common base frame properly aligned. The motor shall be suitable for three phase 415 V ± 10%, 50 Hz supply. Pumps shall be installed in parallel combination (1 running + 1 standby) fitted with all Long radius bends, common pressure header with Flanges, Cork sheet Gaskets, Nuts Bolts with washers, provision for 25mm priming facility using 25mm heavy duty ball valves 02 Nos, 25 mm (ERW) M.S. Pipe etc with each pump and M.S suction pipe of 200mm dia, 8m length, with flanges, long radius bends foot valves with strainer, clips and clamps, nipples, flanges as per site requirement. The job also includes shifting of pumps set from NH to pump house by means of head load etc. the details are as i) Capacity of Pump = 1.92 Cusec ii)Total Dynamic Head = 208 mtrs iii) Efficiency at duty point : 75% iv) Driving Motor Rating at 415V ± 10%,50Hz = 205kw/275HP Speed =1450 RPM – 1480 RPM v) Insulation = F-class Vi) NPSH = to be calculated for suction lift of 4m at atmospheric condation of kargil @ 2676m All necessary service manuals/parts catalogs should be made available along with machine /equipment.

Control valves of Pump Delivery Size 1. Nozzle Type Check Valve, 200 mm, PN 25= 03 No., 2. Sluice Valve, 200mm, PN 25 = 02 No. 3. Foot Valve 200 , PN 25= 02 Nos. 4.heavy duty NRV 200mm =02 No 5. Air valve with triple-function isolation valve 100mm = 02 Nos

Control panel with one Incomer and two out goings for two pump sets in parallel Operation. (One running and the other standby and vice versa) ……HP Soft-Starter for each pump set. fixed type, floor mounted, cubical design motor control panel fabricated out of 2mm/14 SWG CRCA thick sheet duly painted, suitable for indoor use, internally wired complete with bus bar covered with PVC heat shrinkable sleeves, colour coded. Panel shall be fitted with 02 Nos. Soft Starter motor starters suitable for 3-phase, 415 Volts, 50 Hz Squirrel Cage Induction Motors, with all components of suitable rating fixed and wired in the panel. The panel shall be complete with all protections in-built (Over load/PTC/Line fault / Voltage imbalance / Phase reversal / Under voltage / Over voltage / Over temperature / Open Gate / Excessive Starts per Hr, Single phasing), Main incoming MDO ACB with short circuit release including earth fault and under voltage protection. Bus bar, metering ( incoming and outgoing Voltmeter, Ampere meter, Frequency meter) (3-phase current/3-phase voltage/power factor of running motor, phase indication lamp (RYB with CTs), Outgoing ACB Soft starter for each pump sets, capacitor Bank … KVAR for an improved power factor of .95 to 1, over load relays. The control panel shall be complete with single core copper cable of size cable of size 240 mm2 of 200 RMT confirming to IS 694 with required thimbles from LT transformer to Panel and 3 ½ core Al Cable of 40 RMT of current rating more than 1000 Ampere. Parts Catalog-01No The Soft starter component shall be at the bottom part of the panel so that the motor connection cable length is minimized.