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Power transformer works on the magnetic induction principle between coils to convert voltage or current levels to another voltage or current levels. 

1. Power transformer types

There are many ways to classify power transformers according to its function as well as its structure. 

1. 1) Single-phase transformer & Three-phase transformer

2. 2) Step-up transformer & Step down transformer

3. 3) Power transmission transformer & Distribution transformer & Control transformer & Control transformer

4. 4) Two Winding Transformer & Autotransformer

2. Power transformer functions

1. 1）Voltage Transformation and Regulation: The most fundamental functions are changing the voltage level of alternating current (AC) electricity, and adjust the output voltage to compensate for changes in load conditions, ensuring a stable voltage supply to consumers.. 

2. 2）Isolation: Transformers also provide electrical isolation between the primary and secondary circuits. 
   

3. 3）Impedance Matching: They help in impedance matching between different parts of an electrical network. This is important for maximizing power transfer and efficiency by adjusting the load impedance seen by the source to its optimal value.
   

4. 4）Current Transformation: Alongside voltage transformation, transformers also indirectly affect the current in a circuit. When voltage is stepped up, the current drawn from the source is reduced, and vice versa. This is crucial for managing the heating effects and efficiency of conductors in power transmission.
   

5. 5）Frequency Transformation: While transformers do not change the frequency of the AC signal passing through them (they maintain the same frequency on both primary and secondary sides), they are instrumental in transmitting electrical power at a constant frequency across large networks, facilitating the synchronization of generators and maintaining grid stability.
   

Contact QInghao Electric for professional solutions.