PROVN OF 02 X TROLLEY MOUNTED 11 KV DISTRIBUTION TRANSFORMER AT MAMUN MIL STATION

Amount

Supply, installation, commissioning and testing of transformer step down, outdoor type, copper wound, oil cooled, 11/0.433 KV (at no load) with HT 3 phase and LT 3 phase 4 wires, AC,50 Hz of capacity 500 KVA with off load tap changing in 7 Nos positions arrangement on HT side for a variation of secondary voltage +5% to -10% in steps of 2.5%, when measured by the resistance method after continuous full load run in ambient temperature 48 degree centigrade. Including suitable cable entry box on LT side and HT bushing on primary side complete in all respect with standard accessories and fittings confirming to IS 2026 The transformer shall be complete with standard fittings all as specified as latest design (Level Il) for transformer comprising of following :- (i) One cable box on HV side(Primary side) consisting 3 Nos porcelain bushing rods complete with nut, washers, cable, gland etc. (ii) One cable box on LV side(Secondary side) consisting 4 Nos porcelain bushing rods complete with nut, washers, cable, gland etc. (iii) Oil conservator tank with filter type drain valve and oil level gauge (iv) De-hydration breather with first fill of de-hydrating agent(silica gel). (v) Explosive vent (vi) Thermometer pocket on tank cover

(vii) Dial type thermometer, vapour pressure type having range 0 to 120°C with metal guard having maximum perimeter reading temperature indicating with resetting device for transformer (viii) Rating plate with terminal marking plate (ix) Earthing terminal on tank and cover for fixing earth strip of size 32 x 6mm. (x) Oil level guage and Oil drain filter valve. (xi) Lifting lugs (xii) Oil filling holes with cap/plug with connecting plate complete (xiii) Air release valve plug (xiv) Extra bushing for Neutral out side the cable box for independent earthing for neutral earth (xv) First filling of fresh transformer oil confirming to relevant IS and tested up to 45 KV die electric strength Note: Test certificate, purchase voucher of transformer and test certification of electric strength shall be submitted by the contractor after filling the oil from manufacturer.

Supply and fix cable jointing kit for 11 KV grade cable for out door termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 Sqmm complete all as specified and directed.

Supply, laying & testing cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor, 11000 volts grade, of size 3 core 120 Sqmm complete all as specified and directed.

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 300 Sqmm 3.5 core complete all as specified and directed.

Supply and fix cable jointing kit for 1100 Volt grade cable for out door termination heat shrink type joint complete with jointing material and accessories suitable for 3.5 core XLPE armoured aluminium conductor cable of size 300 Sqmm complete all as specified and directed.

M&L for trolley for 500 KVA transformer, factory fabricated manufactured of MS sheet, angle irons, channels etc duly painted as per load class recommended by manufacturer's of transformer with four wheels and one spare wheel consisting of following parts:- (i) Hydraulic jack (ii) Toe rod/chain (iii) Air filling pump (iv) Four wheel drum brake system (v) Spring loaded drawbar (vi) Leaf spring based suspension system (vii) Provn for idling screw jack 04 Nos for levelling of transformer etc complete all as specified and directed by Engineer-in-Charge. (Note: Drawing of trolley duly approved from manufacturer of transformer shall be submitted by the Contractor).

kailu construction co (BID ID -3201985)

JAI DURGA CONSTRUCTION CO (BID ID -3202199)

Nirmal Enterprise (BID ID -3201591)

SAINI AND SAINI BUILDERS (BID ID -3202173)

RD Engineers (BID ID -3201718)

dinesh enterprises (BID ID -3200556)

Standard engineers (BID ID -3202073)