PROVISION OF AUTOMATIC VOLTAGE STABILIZER FOR IUHDSS SERVICE ROOM AT HQTNP BUILDING UNDER AGE(I) NAVY CHENNAI.

Amount

Supply and installation , testing of Voltage stabilizer for automatic operation, three phase naturally oil cooled indoor type & designed for input variation between 340 V to 480 V with output voltage stabilized at 415 with accuracy ± 2.5% and speed of correction 8 Volts per second and of capacity 200 KVA Complete with PCC foundation as per OEM recommendation all as directed Engr- in- charge.

Supply, laying and testing cable XLPE Insulated ,screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 150 sq mm 3½ core with clamping on wall properly Complete all as specified and directed by engr in charge

M & L for earthing complete with galvanised steel plate earth electrode 600X600X6mm thick buried directly in ground (earth pit not less than 2.25 meter below ground level) with top edge of the plate not less than 1.5 metre below normal ground level connected to GI strip 25X4mm at two points by means of bolts and nut, check nut and washers including charcoal dust, common salt, necessary excavation in hard/dense soil, returning filling in and removal of surplus soil to a distance up to 50metres, PCC pit in 1:3:6 type CI (using 20mm grade stone aggregate) RCC 1:2:4 type B-1 (using 20mm grade stone aggregate ) 50mm thick pit cover, reinforced with 8mm dia TMT bars 75mm c/c, both ways MS handle 12mm dia, GI funnel, wire mesh and GI watering pipe of 20mm bore GI (light grade) and earth lead protection pipe 40mm bore (light grade) all as specified, directed and shown in electrical plate No 3 of SSR Part-I including testing complete. Note : GI strip and protection pipes 40 mm GI light grade up to 7.5 metre is included in unit rate and beyond that the same will be measured separately.

Supply and fixing High density poythelyne (HDPE) pipes of pressure rating 6kgf/ sq/ m of size 75 mm for cable protection laid in trenches complete all as specified and directed

M&L for Earth continuty conductor or main earthing lead as 25x4 mm GI strip fixed to wall on batten or recess or chasses or burried in ground or drawn in conduit /pipe or fixed to pole or any other situation for loop earthing etc.

Material and labour for plain cement concrete 1:3:6, type C-2, using 40 mm graded stone aggregate as in foundation, filling and mass concrete all as specified and as directed.

M.G.Swamy.Co., (BID ID -3077431)

Veera Electrical (BID ID -3082606)

Sri Sankar Enterprises (BID ID -3083125)