PERIODICAL MAINT OF TRANSFORMER, GANG SWITCH, PAINTING OF TRANSFORMER AND FOUR POLE AND TWO POLE STRUCTURE AND CONNECTED MISC WORKS AT NABAGRAM MIL STN UNDER GE (P) PANAGARH

Amount

Excavation in trenches n.exc 1.5 m wide and n. Exc 1.5 m depth and getting out in hard/dense soil for cable etc. , complete all as specified and as directed by Engrs- in Charge.

Returning, filling in including spreading, levelling, watering and well ramming in layers n.exc 25 cm thick in soft/loose soil under floor, complete all as specified and as directed.

Removing excavated materials n.exc 50 m and depositing where directed at a level n.exc 1.5 m above the starting point, complete all as specified and as directed.

M&L for sand cushioning for cable protection, complete all as specified and as directed.

Supply and laying Sub Class "B" Bricks Designation 75 as in cable protection, complete all as specified and as directed.

Supply and lay XLPE Insulated screened PVC bedded galvanised steel strip or wire armoured electric power cables (heavy duty) 1100 volts grade with stranded aluminium conductor of size 300 sqmm 3.5 core, complete all as specified and as directed.

S&F as in repairs switches air break 11000 volt, gang operated, triple pole mechanically operated, mounted on insulators and steel frame with operating mechanism worked from ground level for current rating upto 400 Amps, complete all as specified and as directed.

M&L for expulsion type fuse single pole 11000 volts above 25 and upto 50 Amp incl dismantling old unsv one, complete all as specified and as directed.

Repair/replacement & servicing of two pole & four pole structure by greasing of mechanical linkage gang operated switch, DO, dismantle of existing detoriate ACSR jumper, replacing of unserviceable 11000 volt Pin insulator & reconnected with new ACSR jumper, using new drop out fuse unit, changing of leaver hook and locking arrangement, complete all as specified and as directed. Note : Contractor shall be taken proper 11 KV shut down and do the work in presence of 11 KV Llicense Holder Electrician.

M&L for painting to HT Two pole and four pole structure with cross arm, support arm complete with one coats of synthetic enamel aluminium paint, complete all as specified and as directed. Note : Contractor shall be taken proper 11 KV shut down and do the work in presence of 11 KV Llicense Holder Electrician.

M&L for painting to 250 KVA stepdown transformer of existing colour with one coats of synthetic enamel aluminium paint, complete all as specified and as directed. Note : Contractor shall be taken proper 11 KV shut down and do the work in presence of 11 KV Llicense Holder Electrician.

S&F Cable jointing kit for 11 KV grade cable for Outdoor termination heat shrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, AI conductor cable of size 95 sqmm, complete all as specified and as directed.

S&F Cable jointing kit for 11 KV grade cable for Indoor termination heat shrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, AI conductor cable of size 95 sqmm, complete all as specified and as directed.

Taking down the defective air breathers from the transformers, supply and fix new breathers suitable for stepdown distribution transformers of any make and capacity 250 KVA including filling of new silica gel in breathers, complete all as specified and as directed.

Supply and topping up transformer oil conforming to IS:335 (1993), dielectric strength not less than 60 KV at 2.5 mm gap in various capacities distribution transformers installed at various indoor and outdoor sub stations, complete all as specified and as directed.

Dehydration of transformer oil of various capacities distribution transformers installed at various indoor and outdoor substations with ultra high vaccum filtration machine to obtain the dielectric strength of 60 KV at 2.5 mm gap, complete all as specified and as directed.

M&L for earthing complete with galvanised steel earth plate electrode 600 x 600 x 6 mm thick buried directly in ground vertically at a dept (earth pit not less than 2.25 m deep below ground level with top of the plate not less than 1.5 m below normal ground level, earth plate surrounded from all sides by 15 cm thick packed layer of charcoal, dust & common salt filling in alternate layer and electrode connection by using galvanised iron strip 32 x 6 mm as earthing lead (up to the test point) by means of bolts nuts, check nuts and washers made of GI tubing 40 mm bore, GI pipe connected upto test point and GI pipe light grade 20 mm bore for watering and including funnel, wire mesh, RCC pit cover and PCC chamber pit with PCC (1:3:6) type C-2 using 40 mm graded stone aggregate, including excavation and earth work in any type of soil, returning, filling in approved soil and disposal of surplus soil to a distance n.exc 50 m all as specified and shown in electrical plate No. 5 of SSR-1991 (Part-I), complete all as specified and as directed by Engr-in-Charge.

Schedule of Credit

BANSAL CONSTRUCTION

M/S MBS TRADING CO