The main functions of power transformer are as follows:
1. **Voltage conversion**: this is the main function of the power transformer. It converts electricity of one voltage level into electricity of another voltage level to meet the voltage requirements of different users. For example, some users need high voltage power to drive large equipment, while others may only need low voltage power to drive small equipment or household appliances.
2. **Current conversion**: In changing the voltage, the power transformer can also change the current. This transformation relationship follows the principle of "high voltage, low current, low voltage, high current", which is designed to ensure the stable transmission of electricity.
3. **Impedance transformation**: In power systems, transformers can also change the impedance value. This helps to match the impedance to ensure the effective transmission of power and stable operation of the system.
4. **Isolation role**: Power transformers also provide electrical isolation between the primary and secondary sides, ensuring the safety of equipment on both sides and preventing electrical accidents due to unforeseen circumstances.
5. **Heat dissipation**: In the conversion and transmission of electrical energy, a certain amount of heat will be generated. Power transformer has a certain heat dissipation ability to ensure that the temperature of the equipment in normal operation will not be too high, so as to extend its service life.
In summary, the power transformer plays a vital role in the power system, not only realizes the transmission and distribution of electric energy, but also ensures the stability and safe operation of the power system.
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