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Power transformer is the main primary equipment of power system, especially plays an important role in long-distance transmission.
Conventional power transformers are used for step-up and step-down while autotransformer is used for coupling power systems with different voltage levels.
The power transformer has a series of double coil unload, double coil unload, three coil unload, three coil on-load, high impedance double coil on-load and so on.
It is widely used in power grid substation, hydropower station, thermal power plant, enterprise substation and other places.