supply of outdoor type, plinth mounted, oil immersed, copper would, non-sealed type (transformer tank body and cover are bolted) distribution transformer 250 kva , outdoor type, plinth mounted, oil immersed, copper would, non-sealed type (transformer ta nk body and cover are bolted) distribution transformer 250 kva rating, 11 kv/415v, 3-phase, 50hz, primar y winding in delta and secondary winding in star (vector symbol -dyn 11) onan cooled, off-load tap chan ger for variation of hv voltage from +5% to -10% in steps of 2.5%, with all standard fittings as per clause 2 0.1 of is 1180 (part 1) and oil temperature indicator & winding temperature indicators, drain-cum-sampling valve with steel plug, energy efficiency level - 2 and above, conforming to is 1180 (part 1):2014 with amen dment nos. 1,2,3 and 4 or latest. make and description: as per latest cee description no ser/elec/gs/des cription/trans/4/rev-0/oct 2023, vide ltr no cee/s/185/519/genl. dated 10/10/2023 or lates, make: ind an make is approved. [ warranty period: 30 months after the date of delivery ] ]