VTST manufactures a wide range conventional, sealed type/ outdoor type, 3 Ph, 50 Hz, oil immersed, ONAN/ ONAF/ OFWF cooled, step up/ step down, multi winding with Al/ Cu conductor, Continuous duty distribution transformers ranging from 15 KVA to 2500 KVA with all voltage class and up to 33 KV. These transformers can be free breathing, fitted with a conservator. The liquid filled range is cooled by tank - mounted plate radiators on the side of their tanks. The latter being known as conventional type transformer.