supply of supply, installation, testing and commissioning of oil immersed, naturally self cooled, 800 kva, 11 kv/433 volts, double copper woundsupply, installation, testing and commissioning of oil immersed, naturally self cooled, 800 kva, 11 kv/433 volts, double copper wound,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, ve ctor 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 accordan ce with is: 1180:2014 part-1(eel-2). detailed technichal specification as per attached annexure-a, b, c & d, [ warranty period: 30 months after the date of delivery ] ]