supply of 250 kva outdoor type 11kv/0.416 kv step down distribution transformer.250 kva outdoor type 11kv/0.416 kv step down distribution transformer.,250 kva outdoor type 11kv/0.416 kv step down distribution transformer with all safety devi ce and complete accessories 3 phase 50 cycles oil immersed naturally cooled (onan) core type double wou nded with copper winding dyn11. off circuit tap changer on hv to vary hv 50/55 degree centigrade temper ature rise in oil and winding respectively , high voltage side connected in delta whereas low voltage side co nnected in star having vector group reference dyn11 with neutral of the secondary winding brought out for earthing pole mounted outdoor type having porcelain bushings on hv and lv sides, complete with first fillin g of oil as per is:335 and all fittings and accessories confirming to is:1180 (part-1) of 2104, level 3 with lat est amendment as per dy cese/grcs specification no: ser/elec/gs/description/trans/4/rev-1/nov/20 24 (copy attached annexure-a) type test report mandatory. make: melcon, mei,cg, abb, marson or similar. [ warranty period: 30 months after the date of delivery ] ] see/g/dps, ser jharkhand 1.00 numbers