supply, delivery and installation of voltage stabilizer and other electro-mechanical accessories at kargahir water supply scheme under bankura mechanical division phe dte, dist bankura- 1 supplyand delivery25 kva oil coolling type voltage stabiliser, having unbalance 200 - 500v input voltage, and 415(±1%) out put voltage , auto/manual servo voltage stabilizer with u/v,o/v,o/l protection with contactor at out put side, input mcb, ammeter bell etc. as per i.e rules and as per tecnical specification given in nitn.b.:- manufacturer test certificate for stabilizer, core material, winding copper & oil should be produced at the time of delivery 2 supply, deliveryat site of following items 3 100 amps 415 volt tpn sheet steelenclosed hbc fuse type heavy duty double break main switche with sidet handle operated 4 100 amps 415 volt tpn sheet steelenclosed onload changeover switch side handle operated. 5 100 amp 415 volt tpn sheet metal (16 swg) iron clad busbar chambers on angle iron frame on wall, incl. earthing attachment and painting as requiredi)4way 6 25 sq. mm, 3.5 core, xlpe al, ar cable of 1.1 kv grade. conforming toas per is-7098 (part 1) 2011 with up to date amendments. 7 making earthing arrangement 8 excavation of soil for installation of earth electrode and filling & ramming 9 a) for soft soil (1m x 1m x 1.5m) x 4 nos 10 earthing with 50 mm dia gi pipe 3.64 mm thick x 3.04 mts. long and 1 x 4 swg gi (hot dip) wire (4 mts. long), 13 mm dia x 80 mm long gi bolts, double nuts, double washers incl. s & f 15 mm dia gi pipe protection (1 mts. long) to be filled with bitumen partly under the ground level and partly above ground level driven to an average depth of 3.65 mts. below the ground level as below:by isi-medium gi pipe 11 extra for providing masoneryenclosure on the top of the earthelectrode of overall size 86.36 cm x 86.36 cm x 46 cm deep(below ground level) complete with cemented brick work(1:6)of 25 cm width duly plastered with cement morter (inside) cihinged inspection cover of size 36.56 cm x 35.56 cm with lockingarrangement, gi reducer including drilling of 46 nos. 12 mm diaholes on the gi pipe 12 extra for treatment of soil by using salt & charcoal or coke forplate electrode 13 connecting the equipments body to earth busbar including s & f 25 mm x 6 mm galvanised (hot dip) ms flat on wall/floor with gi saddles as required and connection to equipments incl. drilling holes, with bolts, nuts, washers etc. 14 taking out of all old electrical item from wall i.e. main switch, change over, voltage stabiliser al.ar cable from switch room as per direction 15 installation and commissioning of above voltage stabilizer and other acessories by supplying all required materials laying of cable making socketing finishing of cable supplying cable gland etc and making c.c foundation as per requirement and as per direction of eic. by engaging skilled technician as per technical specificationand upto entire satisfaction of eic. 16 carrying charges of all old matrials from pump house to ahilakundi, bankura bmd office premises including loading & unloading charges as per direction 17 add: 18% gst 18 add: 1% cess