supply, installation, testing and commissioning of oil immersed, naturally self cooled, 800 kva, 11 kv / 433 volts, double copper wound, crgo type, delta / star connected, vector group dyn11, 3 phase, 50 hz ac supply, indoor type distribution transformer complete with all standard fittings & first filling of transformer oil as per is: 335, built in accordance with is: 1180:2014 part-1 ( eel-2 ) . is:2026, , is 10028 ( part-ii ) etc. detailed technichal specification as per attached annexure a, b & c. make- abb, seimens, schneider, density or similar. [ warranty period: 30 months after the date of delivery ]