PROVN OF 02 X 250 KVA SERVO VOLATAGE STABALIZERS AND CONNECTED ACCESSORIES FOR BDE CAMP AT SIGAR MIL STN UNDER GE 872 EWS

Amount

Supply & fixing 3 phase servo voltage stabilizer of capacity of 250 KVA (conforming to BIS 9815:Part 1: 1994) for automatic operation, rated frequency 50 Hz, naturally oil cooled, indoor type with protection IP42/IP45, unbalanced type, copper wound, metallic body duly powder coated with lifing hooks-02 nos and digital display of volt/amp meter etc & designed for input voltage variation between 210V to 480V with output voltage stabilized at 415 Volts with accuracy ± 1% and speed of correction 8 Volts per second for single phase and 20 Volt per second for phase to phase with relay free smooth and silent operation, having no distortion in wave form, response time not to exceed 10 milli seconds, sensitivity (+/-) 1% and having efficinacy more than 95 %, complete all as specified and as directed. NOTE : The cost of RCC foundation for installing the stabilizer as per manufactures recommendation / as per OEM design including covered weather protction shed of suitable size using MS angle or hollo section and painting with two coats of synthetic enamel paint over a coat of primer mounted on RCC foundation with pre painted galvalume sheet of 0.5 mm tick (three side covered and front open) of any colour having tensile strenght of 550 MPA is deemed to be included in the quoted rate.

Supply, laying, jointing, testing and commissioning cross-linked polyethylene (XLPE) insulated cable for working voltages of 1100 V, PVC sheathed, armoured, 3 core with reduced neutral conductors (3½ core), nominal cross sectional area of main conductor 185 sqmm, stranded aluminium conductor, ISI marked as per IS 7098(Part-I): 1988 including cable glands, lugs etc. to suit the cable size and to be laid in trenches, fixed along pole, under floors, through GI pipe laid under floors/roads, through concealed GI pipe along wall etc. complete all as specified and as directed.

Excavating in trenches not exceeding 1.5 m wide and not exceeding 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. or for cable laying or not exceeding 10 sqm on plan and not exceeding 1.5 m in depth and getting out in hard/ dense soil complete all as specified and as directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25 cm in soft/ loose/ hard/ dense soil complete all as specified and as directed.

Removing excavated material (soils) not exceeding 50 m and depositing where directed at a level n exc. 1.5 m above the starting point

Supply & spreading in trenches sand cushioning to underground cable in trenches including spreading, levelling hand punning down complete all as specified and directed Note:- Depth of sand cushioning will be measured after punning down and levelling the sand properly.

M & L for laying of bricks locally available sub class 'B' bricks (old size) for cable protection cover laid flat and dry in trenches over the cable perpendicular to the direction of cable all as directed.

M & L for earthing complete with galvanised steel plate earth electrode 600 mm X 600 mm X 6 mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less than 1.5 metres below normal ground level, connected to earthing lead of 32 mm X 6 mm galvanised mild steel strip by means of bolts, nuts, check nuts and washers of galvanised iron from earth plate to test point upto 7.5 metre including all as shown in electrical plate No. 3 of SSR Part I (2009) including necessary concrete chamber in cement concrete M15 (Nominal Mix) using 20 mm nominal size coarse aggregate, precast RCC cover slab in cement concrete M15 (Nominal mix) using 20 mm nominal size coarse aggregate of size 40 cm X 40 cm X 5 cm reinforced with 8 mm dia TMT bars @ 150 mm c/c with one handle for lifting made out of 8 mm dia bar, GI funnel, GI wire mesh filter, 20 mm dia GI pipe medium grade for watering, 40 mm dia GI pipe medium grade for protection of earthing lead, charcoal or coke and salt in alternate layers including necessary excavation and earth work in any type of soil/ strata and testing complete all as specified and as directed by the Engineer-in-charge.

M/s PRABIR ENTERPRISE (BID ID -3143510)

M/S A K BROTHERS (BID ID -3144340)

M/S SINGH TRADERS (BID ID -3142841)