PROVISION OF TROLLEY MOUNTED TRANSFORMER 750 KVA AT MILIT GIRINAGAR PUNE 25

Amount

Supplying, installing, testing and commissioning of AC 3 phase 50 HZ 750 KVA capacity energy efficient level-III transformer step down, plinth mounted outdoor type 22000/433 volts (at no load), all as per IS-1180 Part-I, copper wound, oil immersed, naturally cooled with external cooling tubes, core type, delta connected on primary (HV) side and star connected on secondary (LV) side in accordance with vector symbol DYN-11 (vector group-4) with neutral brought on secondary (LV) side & having tappings in equal steps of 2.5 % from (+) 5% to (-) 7.5% on primary side by means of hand operated off load tap changing gear, so as to change/correct L.T voltage on secondary side including provision of all necessary / standard fittings, PCC foundation required as per site mainly comprising of : (a) One cable box on primary H.V side having cable glands suitable for 185 Sqmm 3 core XLPE 22 KV H.T cable (consisting of 3 Nos porcelain H.T bushings with brass/ gun metal bushing rods complete with nuts and washers) (b) One cable box on secondary (LV) side consisting of 4 Nos porcelain bushings with GM bushing rods complete with GM nuts, and washers with one No cable gland suitable for reception of outgoing L.T. PVC sheathed armoured cables of size 500 sqmm 3.5 core. (c) Oil conservator with filter type, drain valve and oil level gauge. (d) Dehydrating breather with first fill of denydrating agent. (e) Explosive vents. (f) Thermometer pocket on tank cover. (g) One No 100 mm dia dial type thermometer vapour pressure type having range 0-120 degree centigrade with temp reading pointer, max temp indicator and resetting device. (h) Rating plate with terninal markings. (j) Two earthing terminals on tank/tank cover to facilitate fixing of 32 x 6 m GI earth strip. (k) Oil level gauge. (l) Oil drain and filter vlalves. (m) Oil filler hole with cap/plug with connections complete. (n) Lifting lugs. (o) Air relief valve plug. (p) Four plan solid cast steel detachable rollers. (q) First fill of fresh oil conforming to relvant IS and tested upto 40 KV dielectric strength. (r) Extra bushing for neutral outside the L.T cable box for providing independent earthing for neutral. (s) Provision of 2 Nos danger boards 250 x 200 mm size made out of 1.6 mm thick M.S. plate, vitreous enameled white, with letters. figures of voltage and conventional skull and bones in signal red colour , one at H.T side and other on L.T side. (t) Any other fittings / accessories so as to conform the whole transformer to IS-1180.

Supply, laying & testing HT UG cable XLPE insulated screened PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor, 22000 volts grade, of size 3 core 185 sqmm

M&L for Portable Earthing of machinery/equipment Installed at trolley mounetd Transformer including Copper wire of size min bore size 10mm not less than 10 mtr length alongwith lead and round solid Copper earth rod of bore size 16 mm 2 mtr length all as directed.

Supply ,testing of four wheel trolley suitable for mounting of 750 KVA Transformer made of high tensile MS section. The Size of trolley 4.0 mtr x 3.0 mtr (+/- 10%). Trolley should have 4 wheels complete and the front two wheel will be rotated upto 160 degree with up/down movable tow hook. Tyre should be of suitable size and load capacity minimum 7 ton . Trolley to have parking and over run break, pulley, tow hook and leaf spring four sets & 2 nos axles. Super Structure of the trolley should be made of suitable size and top platform made of minimum 3 mm thick MS plate. Necessary arrangements for fixing of the Transformer on top platform will be made suitably for 750 KVA Transformer. Side support of MS angle minimum size100 mm x 100 mm x 10 mm will be provided based on the suitable size for fixing the Transformer to avoid sliding. Reflective sticker both side of rear will also be provided for night movement. Minimum ground clearance should be 80 cm. Toolbox of size 100 cm x 50 cm and height 30 cm to be fitted at trolley floor and one set of spare wheel with tyre fitted with trailer all as directed by Engineer-In-charge.

Supply, laying & 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 500 sqmm 3.5 core

M/S N K POWER SYSTEMS AND PROJECTS (BID ID -3381859)

Adinath Technical Services (BID ID -3374252)

Tejas Enterprises (BID ID -3374604)

Sneha Aircool (BID ID -3378196)