Jaipur Development Authority Tender

Supply installation testing & Commissioning of Copper wound distribution Transformer of following rating and % Impedance, 11/0.433KV Delta-Star Connected, Vector Group Dyn 11, ONAN Cooled losses as per IS 1180 part I 2014 (Fourth Revision) Level-1, with boltless core design including standard accessories like conservator with prismatic oil level gauge , silica gel breather, Bucholz relay, pressed steel radiator fins, Radiator Valve(above 800 Kva) Suitable size HT cable box, LT cable box with Busbar connection for outgoing cables, Off -LTC (+/- 2.5%, +/- 5% to - 7.5% ), temperature rise of 40 degree C in oil / 45 degree C in winding , drain valve, Air release device, Dial type Oil & Winding Temperature gauge with alarm & trip contacts, first filling of transformer oil as per IS :335-1953 , Epoxy primer and PU based paint as Top coat, Unidirectional rollers for rating upto 800 kva & bi- directionalabove 800 Kva rollers with locking arrangement etc. as required. The Transformer shall be subjected to routine factory tests (as per IS:2026 and IS:1180) including Temperature rise test in OEM's own lab shall be witnessed by Department engineer Physically.

Transformer shall be tested from CTL of discom before charging of transformer & complete installaion must be certified from Electrical Inspectorate office as per Indian Electricity rule, (CTL testing charges and Electrical Inspection charges shall be reimbursed by the department to the contractor)Following tests shall be carried out on each transformer at site by OEM enginer in presence of department authorised representative:- a) Ratio test on each tapping.b) Resistance of windings at principal and all tapings.c) Insulation resistance of the winding between HV to earth / HV to LV / LV to earth.d) Vector group test.e) Magnetic Balance test. All as per pre approved by Engineer in charge. For additional technical parameters of products/ work , refer Annexure "A" attached with this BSR .

630 KVA with % Impedance 4.5