supply of supply of 250 kva,11/0.416 kv, 3 phase, 50 hz, outdoor type distribution transformer complete. , supply of 250 kva,11/0.416 kv, 3 phase, 50 hz, outdoor type distribution transformer compl ete, onan cooled, delta/star (dyn 11 group), copper wound , plinth mounted transformer with first fill of t ransformer oil and with standard fittings conforming to is:1180 (part-1)/2014 latest, energy efficiency: lev el 2 of table 6 of amendment no.4 march 2021 (details as per enclosed annexure-a). guaranteed and ot her particulars as per enclosed annexure-b and drawing as per enclosed annexure- c. make: servokon o r servostar or airen power or similar. warranty: 30 months from the date of supply [ warranty period: 30 months after the date of delivery ] ]