PROVN OF STANDBY TRANSFORMER (TROLLEY MOUNTED) CAPACITY OF 500 KVA IN KANJOLI LINE AT BHARATPUR MIL STN

Amount

Supply, installation, testing & commissioning of transformer of capacity 500 KVA, level 3, step down outdoor type copper wounded 11/0.433 KV (at no load) AC 3 Phase 50 Hz on secondary side double wound oil immersed naturally all air cooled with external cooling tubes/radiator, delta connected as on primary and star connected with neutral brought on secondary) side and having tapping at (+)2.5%,(+)5% (+) 7.5% to be changed by hand operated OFF LOAD tap changing gear. The maximum temperature rise should not exceed 45 degree centigrade in oil and 50 degree centigrade in HV/LV winding when measured by the resistance method after continuous full load run in ambient temperature the transformer shall confirming to IS 1180 Part-I:2014 including amended to date and comprising of following accessories:-

(a) HT cable box with 03 Nos porcelains HV bushing HV side suitable for 11 KV complete with bushing rods nuts.

(b) LT cable box on LV secondary side consisting of 05 Nos porcelain bushing (One No neutral earth, One No Neutral and Three Nos for phase connected bushing) with bushing rods and nuts washers and cable glands suitable for reception of out 3.5 core 500 Sq.mm cable 3 runs, LT 1100 Volts grade XLPE insulated heavy duty including gland joint complete.

(c) Oil conservator with filter type drain valve and oil level gauge.

(d) Dehydrating breather with first filling of dehydrating agent.

(e) Explosive vent.

(f) Thermometer pockets including temperature gauge.

(g) Two earthing terminal on tank body to facilitate fixing of 32x6mm GI strips.

(h) One No thermometer dail type vapour pressure type having range 0-120 degree centigrade with maximum temperature indicator and re-setting device to maximum temperature including needle of temperature gauge max reading painted terminal.

(j) Rating plate with terminal plate.

(k) Oil level gauge.

(l) Oil drain filter valve

(m)Oil filling hole on top cover with plug.

(n) Air release valve/plug.

(o) 4 Nos plain solid cast steel detachable rollers.

(p) First fill of transformer oil conforming to relevant ISI and tested upto 60 KV dielectric strength.

(q) Two No lifting hook at side of transformer.

Supply only ready to use double wheel trolley with four jacks and towing hook for mounting of transformer 500 KVA transformer of size aprox (1.8 M x 2.4 M), mild steel chassis size 125mm x 65mm, Axle mild steel 65mm X 65mm, chequered plate on top 8mm thick, suitable for lifting of weight approx 2 tonne, duly painted with two coats of synthetic enamel paint over a coat of red oxide primer, towing hook of channel/angle iron, fixed with trolley for easy movement form one place to another place. It shall not less than 1.25 metres from channel, including 2 Nos set of rim, tyre and tube 7.50 x 16 (16 ply) of Make MRF/CEAT/Apollo) leaf spring set with U-clamp, Axle etc complete all as specified and directed by Engineer-in-Charge.

Supply and fixing of MCCB 630 Amps 4 pole 50 KA rating adjustable type including outdoor type MS enclosure made out of MS sheet 3.15 mm thick with supporting angle iron 50mm x 50mm x 6mm duly welded on trolley having one suitable for mount one trolley etc complete all as specified and directed.

Supplying, laying, connecting and testing in trenches, under floors/ roads or on walls Cable XLPE insulated screened PVC bedded galvanized steel strips or wire armoured, electric power cables (heavy duty) ISI marked with stranded aluminium conductor, 1100 volts grade, of size 630sq.mm, 3.5 core etc complete all as specified and directed.

Supply, laying and commissioning XLPE insulated screened, PVC bedded galvanised steel strip or wire armoured electric power cables (heavy duty) with aluminium conductor 11000 volts grade IS-7098 marked, including jointing & testing of 95 Sq.mm 3 core cross sectional area cable (Earthed) etc complete all as specified and directed.

M&L for cable end termination, jointing kit, 11 KV (Earthed) grade, heat shrinkable, outdoor type complete with jointing material suitable for XLPE cable 3 core 11 KV grade of sizes 95 Sq.mm x 3 core etc complete all as specified and directed.

Vishal Traders