Upgradition of 250 KVA Transformer with 500 KVA Transformer alongwith associated items at Khunmoh Grn under GE 861 EWS

Supply, installation, testing and commissioning of distribution transformer, platform/ plinth mounted, 500 KVA, step down, outdoor type, 11KVA/ 0.433 KV, 3 phase, level 2, 50 hz, AC, double copper wound, ONAN cooled, Oil immersed with cooling tubes/ fins. The transformer shall have a delta connection on HT side and star connection on LT side in accordance with vector group DYN-11 with standard fittings and accessories as per IS 1180 (Part-I) 2014 or latest edition of the IS standards. The transformer shall be equipped with an ON LOAD TAP CHANGER (OLTC) with 9 positions & tapping range (+)5% to (-)15% in equal steps of 2.5% each, alongwith a remote tap changer cubical (RTCC) panel and automatic voltage Regulator (AVR). The first fill of ISI marked, filtered an dehydrated transformer oil at appropriate level as per IS-335, shall be provided. All work shall be carried out all as specified and directed including the following fittings/ accessories :- (a) HV cable end box. (b) LV cable end box. (c) Four Lifting Hook for loading and unloading. (d) Name, Ratings & Diagram Plate - 1 No. (e) On Load Tap Changer (OLTC) - 1 No. (f) Earthing Terminal - 2 Nos. (g) Lifting Eye Bolts - 3 Nos. (h) Air Release Plug - 1 No. (j) Window for Tap Number - 1 No. (k) Oil Drain cum filtering valve with plug - 1 No. (l) Oil filling cum filtering valve with plug - 1 No. (m) Conservator with oil filling hole with cap - 1 No. (n) Silica gel breather - 1 No. (o) Removable manual crank handle to operate OLTC - 1 No. (p) Removable inspection opening with cover - 1 No. (q) Oil surge relay - 1 No. (r) Oil level indicator (Flush tube) - 1 No. (s) Thermometer pocket - 1 No. (t) 4" dial type thermometer stem type & with MRP (if OTI not opted) - 1 No. (u) Explosion vent (If PRV not opted) - 1 No. (v) Unidirectional C.I. Rollers - 4 Nos. (w) Arching Horn set (Only for HV bare bushing type transformer) - 3 Nos.

Supply, laying, jointing and testing 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 3x120 sqmm, complete all as specified and directed.

Supply & installation in replacement HT 11 KV outdoor gang operated air break triple pole, mechanically operated, mounted on 12 Nos insulators and steel frame, with operating mechanism worked from ground level switch suitable for horizontal or vertical mounting with drop out fuse for current rating upto 200 amps complete all as specified and directed.

Supply, laying, jointing and testing cable XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 1100 volts, grade cross sectional area 630 sqmm 3.5 core complete all as specified and directed.

Supply, laying, jointing and testing cable XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 1100 volts, grade cross sectional area 300 sqmm 3.5 core complete all as specified and directed.

S&F in replacement of lightning arresters expulsion type complete with all fittings, suitable for volts 11000 Volts and discharge capacity 65 Kilo Amps complete all as specified and directed

Supply, fabrication, installation, testing & commissioning of LT Panel board/ Feeder piller box, outdoor type, dust and vermin proof, made out of 3.15mm thick CRCA sheet, side canopy, front & back openable doors having aluminium bus bar of capacity 1200 amps including powder coated painting, internal wiring with suitable size of stranded copper conductor cable, PCC foundation, mounting the panel on ground/ floor with PCC (1:3:6) bedding upto a height of 30cm above ground level and 30cm in foundation supporting channels, cable termination, cable gland etc complete all as specified and directed and suitable to accommodate the following switch gears and meters :- (a) ACB 4 Pole, 415 V, 50 KA with Thermal Magnetic Release (Manual Drawout type) of capacity 800 Amps -1 No (Incomer). (b) MCCB, 4 Pole 400 Amps, 35 KA, Thermal Magnetic-1 No (Outgoing). (c) MCCB, 4 pole 350 Amps, 25 KA, Thermal Magnetic- 1 No (Outgoing). (d) MCCB, 4 pole 250 Amps, 25 KA, Thermal Magnetic -1 No (Outgoing). (e) MCCB, 4 pole 200 Amps, 25 KA, Thermal Magnetic- 1 No (Outgoing). (f) MCCB, 4 pole 160 Amps, 25 KA, Thermal Magnetic -2 Nos (Outgoing). (g) Voltmeter, digital type, 0-500V-1 No. (h) Ammeter, digital type with CT's-1 No. (j) Indication lamps (R,YB) LED type-1 set. NOTE : Cost of necessary excavation, PCC, cement work, plastering work & painting with existing colour shall be deemed to be included in the rate quoted.

M&L earthing complete with copper plate 60cmx60cmx3.15mm thick electrode and 20 x 3m copper strip as earthing lead buried directly in ground (earth pit not less than 2.25 meters deep below ground level) with top edge of the plate not less than 1.5 meters below normal ground level, connected to using copper plate 60cm x 60cm x 3.15mm thick electrode and 20 x 3mm copper strip as earthing lead by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No 3 connected to earthing test point all as specified or indicated including testing on completion, complete all as specified and directed. NOTE : On testing after completion of earthing if the desired earth resistance is not obtained earthing will be re-done by the contractor at his own arrangement without any extra cost to the department.

M&L earthing complete with galvanised steel earth plate electrode 60cm x 60cm x 6mm thick, buried directly in ground (earth pit not less than 2.25 meters deep below ground level) with top edge of the plate not less than 1.5 meters below normal ground level, connected to galvanised iron strip 25x4mm as earthing lead by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 connected to earthing test point all as specified or indicated including testing on completion. NOTE : On testing after completion of earthing if the desired earth resistance is not obtained earthing will be re-done by the contractor at his own arrangement without any extra cost to the department.

Supply and fixing cable 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 120 to 185 sqmm, complete all as specified and directed.