PROVISION OF TROLLY MOUNTED TRANSFORMER 500 KVA WITH CONNECTED ALLIED WORKS AT JALIPA MIL STN UNDER GE (A) BARMERPROVISION OF TROLLY MOUNTED TRANSFORMER 500 KVA WITH CONNECTED ALLIED WORKS AT JALIPA MIL STN UNDER GE (A) BARMER

Amount

Supply, install, testing and commisioning out door type trolly mounted step down distribution transformer of capacity 500 KVA, 11 KV 3 phase 433 volts, 4 wire, 50 Hz, with off load tapping on HT side to vary secondary voltage with in limit, as per IS 1180 part -I (level -2) 2014 comprises of core type double copper wound, oil immersed naturaly cooled, oil natural, air natural (ON/AN) with external cooling tubes, delta connection on primary, side (HV) and star connected on secondary side (LV) in accordance with vector group DYN - 11 with neutral brought out on secondary side (LV side ) and having tapings +7.5% with steps of 2.5% on HV side to be changed by means of hand operated off load tap changer gear the maximum temperature rise should not exeed 45 degree celcius in oil and 55 degree celcius in HV/LV winding when measured by resistance method after continuous full load run on an ambient temprature of 40 degree celcius incuding all standard components (conservator with oil indicator, breather assembly, temperature guage, wheels, cable end box, with cover at LV and HV sides and with all standard accessories, as per manufacturers design) all as specified and as directed by Engr-in charge.

Material & Labour for XLPE insulated screened PVC bedded, galvanised steel strip or wire armoured electric power cable (heavy duty) 1100 Volts grade with stranded aluminium conductor of 240Sqmm 3.5 core.

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

Supply, fabrication and testing of transformer trolly for 500 KVA capacity transformer of approx size 3658mm (L)X1829 (W)X 2300 mm (H) with main chasis of 100X50mm MS channel of 6 mm thickness support channel sizes of 75 X40 mm MS channel of 6 mm thickness and the floor area with 6 mm thickness MS chequered plate and the side wall made out of suitable size of wire mesh (made of welded steel wire fabric of weight n.exc. 4 kg per sqmtr ) up to height of 1.2 mtr covering complete perimeter along with supporting frame/structure made of MS equal angle iron of size 50mmX50mmX6mm and MS flat strip of size 50 X6 mm as directed and including provision of suitable door at rear side fixed by hinges and locking system and 2 Nos axle of 63 mm square, forged, steel toe hook and axle will be fitted with leaf spring/suspension the trolly will be nos of double planted rim with appropriate size of bearing and 4 nos of tyres and tube, of size 7.50:16 of approved make. The trolly should be carring a capacity of 5 ton and the weight of the trolly should not be more than 2000 Kg. The trolly shall be painted with two coat of PU coating spray painting over a coat of redoxide primer including the following :- (a) cable reel for 240 Sqmm(LT) & 95 Sqmm cable (HT) (approx 80 Mtr cable) -2 Nos all as specified and directed. Note : cable shall be measured and paid under relevant items of this schedule.

Material & Labour for for Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination cold 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.

Material and labour for Cable jointing kit for 1.1 KV grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3.5 core XLPE armoured aluminium conductor cable of size 240 sqmm complete all as specified and directed.

Material and labour for copper rod 25 mm dia solid with hexagonal head and tapper bottom edge of size 1 Mtr long for earthing, including copper mesh strip of size 20 mmX3mm -15 RM long in each earthing rod with suitable lugs connected to transformer body earthing point complete all as specified and directed at site. Note: the cable should be connected one side to transformer and the other side kept ready for connecting with terminals fitted with suitable size lugs and strip rolled and kept on the trolly.

M& L for danger notice plate of 1.6 mm thick mild steel sheet, vitreous enamelled white with letters, figures and conventional skull and bones in single red colour and fixed with MS clamps, bolts and nuts of approoved size for HT, 25X20 cm size.

M& L for danger notice plate of 1.6 mm thick mild steel sheet, vitreous enamelled white with letters, figures and conventional skull and bones in single red colour and fixed with MS clamps, bolts and nut s of approoved size for LT, 20X15 cm size.

Devi Engineeing

RAAPS CONSTRUCTION