What are the common classifications of power transformers?

Classification of transformers:

1. According to the cooling mode, it can be divided into natural cooling, air cooling, water cooling, forced oil circulation air (water) cooling, water cooling, etc.

2. According to the moistureproof methods, it can be divided into open transformers, encapsulated transformers and sealed transformers.

3. According to the structure of iron core or coil, it can be divided into core transformer (plug-in iron core, C-shaped iron core and ferrite core), shell transformer (plug-in iron core, C-shaped iron core and ferrite core), ring transformer, metal foil transformer and radial transformer.

4. Classification according to the number of power supply phases: single-phase transformer, three-phase transformer and multi-phase transformer.

5. Classification by use: there are power transformers, special transformers (electric furnace transformers, rectifier transformers, power frequency test transformers, voltage regulators, mine transformers, audio transformers, intermediate frequency transformers, high frequency transformers, impulse transformers, instrument transformers, electronic transformers, reactors, transformers, etc. ).

6. According to the classification of cooling media, there are dry transformers, liquid (oil) immersed transformers and inflatable transformers.

7. Classification according to the number of coils: autotransformer, double winding, triple winding, multi-winding transformer, etc.

8. According to the classification of conductive materials, there are copper wire transformers, aluminum wire transformers, semi-copper, semi-aluminum and superconducting transformers.

9. According to the voltage regulation mode, it can be divided into non-excitation voltage regulating transformer and on-load voltage regulating transformer.

10. According to the classification of neutral insulation, there are fully insulated transformers and semi-insulated (graded insulation) transformers.