220kV/132KV/110KV/66KV class series of power transformer are the latest generation products, which have been developed based on the strongpoint of international similar products. The characteristics: free of core lifting inspection, high reliability, high impedance, strong ability to short-circuit resistance, low loss, low noise, low temperature rise, low partial discharge, and environmental protection. We can produce the new products of 13/11/10 series, the structure of which are rationalization and the performance are stable, the maximum capacity is 900000kVA for 220kV and 300000kVA for 110kV at present. They can be widely used in the following power system and power distribution system: power stations, substations, industrial and mining enterprises, customer power distribution substations, and they can adapt to different installation environments, like urban power grid, rural power network, indoor, outdoor and so on.