The main function of a three-phase transformer is to change the magnitude of the AC voltage to meet the needs of different loads.
A three-phase transformer converts the AC current in the primary coil into AC voltage in the secondary coil through the principle of electromagnetic induction, thereby changing the voltage level. This transformer is suitable for circuits with AC frequency ranging from 50Hz to 60Hz and voltage below 660V. It is widely used for power conversion in imported important equipment, precision machine tools, mechanical and electronic equipment, medical equipment, rectification devices, lighting and other fields. The design and manufacturing of three-phase transformers can be customized according to the specific needs of users, including the high and low input and output voltages, connection groups, the number and position of adjustment taps (generally ± 5%), the distribution of winding capacity, and the configuration of secondary single-phase windings, all of which can be carefully designed and manufactured according to user requirements.
In addition, three-phase transformers are widely used as AC stabilized power supplies for electronic computers in industrial and mining enterprises, postal and telecommunications, textiles, railways, construction sites, schools, hospitals, hotels, national defense, scientific research and other departments. They are also suitable for low-voltage distribution with low power supply voltage and large fluctuation amplitude. Through different winding connections (such as star and delta), three-phase transformers can output different voltage levels to meet the power needs of various equipment and systems.