MID/AN/81

Disconnecting power supply to APEX make 2.5 MVA capacity, three phase, 33KV/6.6KV, ONAN cooling, Vector group Dyn 11, no load voltage (HV-33KV & LV-6.6 KV), current on HV side- 43.738 Amperes & 218.7 Amperes on LV side, Maximum temperature rise in oil 50º C, frequency 50 HZ, Impedance Voltage 6.556%HT Electric Transformer and disconnecting all conductor/cables on its HT & LT sides and loading it onto suitable capacity trailer truck at site with the help of suitable capacity Hydra Crane(s) properly manoeuvring at site and transporting the same through road to firm’s workshop, unloading the same for dismantling &for replacement Transformer oil for its smooth functioning . The job includes draining out of transformer oil safely into barrels (≈ 2000 ltr), opening of top cover, Cleaning of transformer tank from out -side & in- side as well to make it free from slag, dirt, and other unwanted deposits/ suspensions. Providing and fitting of new bush rods on LT and HT side of 2.5 MVA transformer. Baking of transformer core coil assembly in heating chamber till specified /proper IR value is achieved. Boxing of transformer core coil assembly and complete connecting accessories/ gasket , fasteners and connected sundries .Filling of fresh transformer oil 2,000 litre with the required BDV value and Di-electric strength up to specified mark inside the conservator .Dispatching the required HT transformer from firm’s workshop and unloading / stacking the same at designated platform at site, making of electric connections on HT Side & LT side by way of cleaning of bus-bars, providing and fitting of new thimbles, nuts, bolts and washers. Making of earth connections after testing of earth resistance value. Field testing of HT transformer for all connected functional parameters on load as well on no load conditions, checking for noise/humming, temperature rise etc. . Complete job includes cost of materialafter deducting rebate on old unserviceable material, charges for skilled & semi-skilled labour, hire charges of machinery/tools & tackles with to and fro transportation charges etc. Complte job . Providing and fitting of 33 KV isolator with earthing along with allied accessories (03 Set) . Complete job De – weeding of the entire receiving station yard of LIS Ranjan( 800 sq.ft)Complete job

M/S UK MECH AND ELECT ENGG WORKS (BID ID -2244188)

AAR PEE ELECTRICAL ENGINEERING WORKS (BID ID -2244260)