DTS produces distribution transformers from 25 kVA to 5000 kVA and power transformers from 4 MVA to 35 MVA with both Voltage side from 3,3 kV to 36 kV, provided with off-load or on-load tap changers, with cooling methods ONAN or ONAN/ONAF. Various types of distribution transformers are single phase or three phases, air natured (ONAN)or air forced (ONAF), open to atmosphere with conservator or close to atmosphere (hermetically sealed). They are produced according to customer request or contract and mentioned standards which are TS 267, IEC 60076, DIN, ANSI, BS171. Each transformer is dispatched after performing routine tests ace to TS 267 and IEC 60076 standards. Also type tests and special tests according to same standarts are performed at our laboratories by customer request.