supply testing installation & commissioning of 750 kva, 11 / 0.750kv, step down transformer, confirming is: 2026, 3 phase, 50 c / s oil immersed, naturally cooled ( onan ) , core type, double wound with copper conductor, having + 2.5%, + 5% off circuit taps on hv to vary hv, 50 / 55%b0c temperature rise in oil and winding respectively, high voltage side connected in delta whereas low voltage side connected in star, having vector group reference dyn11 with neutral of the secondary winding brought out for earthling, outdoor type, having porcelain bushings on hv & lv sides, complete with first filling of oil complying with is:335 and other fittings as per is:2026 as applicable. make: kirloskar electric / stanelec pvt ltd. / siemens / kanohar.