Details: supply, installing, testing and commissioning outdoor type floor mounted step up/ down transformer, 11kv/433 volts (at no load) ac 3 phase 50 hz, 315 kva capacity, core type, double copper wound oil immersed, oil natural- air natural (on an) cooled, with external cooling tubes, delta connected on primary side (hv) and star connected on secondary side (lv) in accordance with vector group dyn-11 with neutral brought out on secondary side (lv side) and having tapings at 2.5% and ± 5% on hv side to be changed by means of hand operated off load tap changer gear. the maximum temperature rise should not exceed 45°c in oil and 55°c in hv/ lv winding when measured by resistance method after continuous full load run on an ambient temp of 40°c. the transformer shall be as per is 1180 (part-10/2014 ee level-2 ) standards and shall comprise of the following:- (a) three nos porcelain bushing suitable for 11 kv on hv side, complete with brass rods, nuts and washers. (b) one cable box on lt side
Sector: Defense