PROVISION OF TROLLY MOUNTED STANDBY TRANSFORMER AND CONNECTED SERVICES AT AFTC COIMBATORE

Amount

Supply, installing, testing and commissioning of transformer step down 500 KVA outdoor type oil immersed, ONAN copper wound complete with all standard accessories, vector group DYN 11 KV/ 0.433 KV suitable for continuous duty for operation of AC 3 phase, 50 Hz,with off load tap changerr to vary secondary voltage ± 7% in steps of 2.5% including new transformer oil upto appropriate level all s per IS 1180-2014 with energy efficiency level-2 and complete all as directed with & including with following fitting/ accessories :- (a) conservator with Oil filling hole , drain plug, oil level indicator. (b) Two nos earthing terminal.

(c) Rating & diagram plate. (d) Air release plug . (e) Off load tap changer. (f) Silica gel breather. (h) Drain cum filter valve. (j) Top filter vlave (Thermometer pocket). (l) Radiator with butterfly valves. (m) Explosion vent with single diaphragm. (n) HV cable box.

Supply, installing, testing and commissioning of Trolley suitable for 500 KVA transformer with following fitting/ accessories :- (A) Trolly Mounting System - (i) The complete unit of transformer should be mounted on a mobile trolley suitable for a maximum speed of 15 km/hr. (ii) Trolley should be mounted on four solid rubber tyres (with one spare wheel) and turning radius of trolley shall be suitable for roads. (iii) Tow bar shall be provided at front and hook on rear side shall be provided. (iv) The trolley shall be minimum ground clearance of 250mm. (v) All vibrating components should be mounted on anti vibrating pads/mounts. (vi) Mud guards at rear, front and side reflectors are also required in the trolley.

(vii) Exposed surface of trolley shall be painted with two coats of synthetic enamel paint over a coat of red oxide primer. (viii) A aluminium ladder is to e fitted on trolley. The ladder shall be sliding type and fitted below the base platform and shall be non removable. (ix) Cable and connector - Trolley should be provided with separate cable drums suitable for 50 meter HT power cable and 2 runs of 30 M LT power cable made with 2.5mm thick MS sheet and 50mm dia soft with 2 Nos beering mounted at suitable place on the trolley with 50x50x6mm angle iron braket. (Note - HT cable and LT cable will be measured and paid separately) (x) Walk around space is required around transformer with guards on trolley.

(B) OTHER ACCESSORIES - (i) Tool Box - Tool box shall be made with 1mm thick mild steel sheet with suitable locking arrangement and fixed on trolley. The tool box shall have adequate size to accommodate following ISI marked taparia Make : tools which are to be of very high quality. (ii) Each type of open jaw, double end spanner, ring spanner and box spanner to tightening of all nut bolts of the system - 01 Set (iii) Each type of screw driver electrician pattern, screw driver engineer pattern and star screw driver set - 01 Set

(iv) Crimping tools of range up to 240 sqmm. (v) Hammer 500 gm. (vi) Other tools as per recommendation of manufacturer. (vii) Safety System - Two numbers of 5 KG fire extinguishers for electrical fire, ISI marked HT insulated rubber mat to be laid throughout the area of control panel. (viii) Out door Enclosure suitable for 4 pole 630 Amp MCCB alongwith locking arrangements. (ix) Cable of 3.5 core 240 Sqmm from TFR LT side to FRP Box with proper lugs and clamps.

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 95 sq mm, all as specified and directed.

Supply and lay 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 3 1/2 core 240 Sqmm, all as specified and directed.

Supply and fix 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, aluminium conductor cable of size 95 sqmm cross sectional area, all as specified and directed.

M&L for earth coninuity conductor or main earthing lead fixed to wall on batten or recess or chases or burried in ground or drawn in conduit / pipe or fixed to pole or any other indicated situation or for loop earthing complete of copper strip size 20 X 3 mm fixed by using and including suitable size of porcelain insulators in such a manner that strip can be separeted from the wall, all as specified and directed.

M&L for test point terminal block made of gun metal or phosphorous bronze size 75x75x25 mm drilled and screwed including 3 Nos 8 mm dia 25 mm long hex head mild steel screw, all as specified and directed.

Supply, installation & testing of maintenance free chemcal earthing of copper coated electrode pipe of length 3 mtr long and 76 mm dia, having terminal size 50x6 mm, the earth electrode pipe is tightly filled with Crystalline Conductive Mixture (CCM) and then sealed. The electrode shall be installed by making bore of 200 mm dia & 3 Mtr deep below normal ground level, after using & including 10 KG ground enhencing material, the electrode shall be surrounded by and including 60 KG Back Fill Compund (Chemical compound provided by manufaturer) complete including making earth pit chamber of size 30x30x15 CM complete, all as specified and directed.

KUMAR AGENCIES

Veera Electrical

devan enterprises