supply of supply, erection, testing & commissioning of power transformer of rating 3000 kva (3mva), 3- phase, 50hz, no load voltage ratio of 6.6/11kv type mounting plinth, outdoor type etc. .supply, erection, testing & commissioning of power transformer of rating 3000 kva (3mva), 3- phase, 50hz, no load voltage ratio of 6.6/11kv type mounting plinth, outdoor type etc. .,supply, erection, testing & commissioning of power transformer of rating 3000 kva (3mva), 3- phase, 50hz, no load voltage ratio of 6.6/11kv type mounting plinth, outdoor type, primary winding (6. 6kv) in delta & secondary winding (11kv) in star with vector symbol dyn11 conforming to is 2026 (part 1) : 2011 (reaffirmed 2021) with copper wound, mineral oil immersed with freely breathing system (also called conservator system) as per clouse 8.2 (a) of is 2026 (part 1), onan cooled transformer. weather co nditions applicable, standards applicable, bushes & cable- end bos(es), minimum short circuit impedance, t ap changer, temperature rise, insulation level, test report etc. to be submitted along with supply of mate rial, fittings to be provided, construction details, insulating oil, peak efficiency index shall be as per annex ure a. [ warranty period: 30 months after the date of delivery ] ]