SPL REPAIR TO ENERGY EFFICIENT TRANSFORMER AGAINST BER TRANSFORMER UNDER AGE (I) TALBEHAT AT TALBEHAT MIL STN

Amount

Supply, installation, testing and commissioning of copper wound step down transformer, outdoor type with standard fittings, HT 11 KV, three phase, LT 433 Volts, 3 phase 4 wire with load tappings on HT side to vary secondary voltage within limits, all as per IS:2026 of capacity 250 KVA, EEL-3 of IS : 1180-2014 with and including amendment No. 1,2,3 and 4 complete all as specified and directed. Note :- The transformer shall be complete with standard fittings all as specified and conforming to IS:335 of 1993 for oil and IS:1180 Part-I of 2014 incl all amendments issued till date for transformer and comprising of followings:- (i) 7 position off circuit tap changer (tapping range +/- 7.5% in steps of 2.5% each) with vector group DYN -11 complete all as specified. (ii) The ambient temperature shall be 48 degree centigrade when measured by the resistance method after continuous full load run. (iii) One No cable box on LV side (secondary side) consisting of 04 Nos of porcelain bushing with bushing rods and another cable box on HV side (primary side) consisting of 03 Nos of porcelain bushing with bushing rods etc. (iv) Oil conservator tank with filter type drain valve and oil level gauge. (v) Oil level indicator with minimum and maximum marking. (vi) Dehydration silica gel breather assembly with first fill of dehydrating agent and oil seal. (vii) Explosion vent diaphragm. (viii) Thermometer pocket on tank cover. (ix) Dial type thermometer vapour pressure having range 0-120 degree C with max reading pointer max temp indicator and re-setting device. (x) Rating plate with terminal marking. (xi) 02 Nos earthing terminal on tank and cover for fixing, earth strip of size 32 x 6. (xii) Oil level gauge and oil drain filter valve. (xiii) Lifting hook. (xiv) Oil filler hole with cap /plug with connection complete. (xv) Air relief valve plug. (xvi) Detachable roller 0-4 Nos (xvii) Extra bushing for Neutral out side the cable box independent earthing for neutral earth. (xviii) First fill of fresh transformer oil confirming to relevant IS and tested up to 40KV die-electric strength.

M&L XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 11000 volts Earthed, grade cross sectional area 95 sq. mm complete all as specified and directed.

Excavation in trenches not exceeding 1.5 mtrs wide & not exceeding 1.5 mtr in depth in soft or loose soil & getting out complete all as specified and directed.

Removing excavated material not exceeding 50mtr &deposited where direceted at a level not exceeding 1.5mtrabove the groundlevel complete all as specified and directed.

Returning, filling in spreading, levelling, watering & well Ramming in layers not exc 25cm thick complete all as specified and directed.

Supply & Laying precast concrete cable cover, Class HV type-1 flat size 300 mm x 180 mm x 40 mm for cable protection laid length wise perpendicular to the azis of cable complete all as specified and directed.

M&L for spreading clean dry sand cushioning to underground cable in layers of 23 cm (8 cm deep before laying of cable and 15cm deep over the cable) after laying the cable in trenches including punning thickness up to 18 cm , and filling in FOL Store as required complete all as specified and directed.

M&L for Earthing complete with galvanized steel earth plate electrode 60cm X 60 cm x 6mm thick buried directly in ground (earth pit not less than 2.25m deep below normal ground level) with top edge of the plate not less than 1.5m below ground level earth plate connected with GI earthing strip (32X6mm) as earthing lead for transformer/feeder pillar box etc. by means of bolts, nuts, check nut and washers of galvanized iron all as shown in Electrical plate No.3 of MES Sch part I and testing on completion. Necessary excavation and earth work, adequate common slat, charcoal dust and funnel PCC (1:3:6) type C-1 pit with pre-cast RCC (1:2:4) type B-1 cover, 40mm thick reinforced with 6 mm dia bars, MS bar 3 Nos both ways funnel with 20,mm dia GI medium grade watering pipe earthing lead complete all as specified and directed.

M&L for Earthing complete with copper earth plate electrode 60 cm X 60 cm x 3.15 mm thick buried directly in ground (earth pit not less than 2.25m deep below normal ground level) with top edge of the plate not less than 1.5m below ground level earth plate connected with copper earthing strip (20X3 mm) as earthing lead for transformer etc. by means of bolts, nuts, check nut and washers all as shown in MES Sch part I and testing on completion. Necessary excavation and earth work, adequate common slat, charcoal dust and funnel PCC (1:3:6) type C-1 pit with pre-cast RCC (1:2:4) type B-1 cover, 40mm thick reinforced with 6 mm dia bars, MS bar 3 Nos both ways funnel with 20,mm dia GI medium grade watering pipe earthing lead complete all as specified and directed.

Supply and fixing cable end termination jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm complete all as specified and directed.

ROHIT ENTERPRISES

M/S Ritu Tandon

M/s Raghav Traders