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Classification of Common Transformers

 

Classification of Common Transformers

(1) According to the number of phases

1) Single-phase transformer: used for single-phase load and three-phase transformer group.

2) three-phase transformer: used for three-phase system up and down voltage.

(2) according to the cooling method:

1) thousand type transformer: rely on air convection cooling, generally used for local lighting, electronic lines

Road and other small capacity transformer.

2) oil-immersed transformer: relying on oil as cooling medium, such as oil-immersed self-cooling, oil-immersed air cooling, oil-immersed

Water cooling, forced oil circulation, etc.

(3) By use

1) Power transformer: used for power transmission and distribution system up and down voltage.

2) Instrument transformer: such as voltage transformer, current transformer, used for measuring instruments and relay protection

Protection device.

3) test transformer: can produce high voltage, high voltage test of electrical equipment.

4) Special transformer: such as furnace transformer, rectifier transformer, adjusting transformer, etc.

(4) according to the winding type:

1) Double-winding transformer: used to connect two voltage levels in a power system.

2) Three-winding transformer: generally used in regional substation of power system, connecting three voltage levels.

3) Autotransformer: used to connect power systems with different voltages. Can also be used as a general boost or drop back transformer.

(5) according to the form of iron core:

1) Core transformer: power transformer used for high voltage.

2) shell transformer: special transformer for high current, such as furnace transformer, welding transformer; Or power transformers for electronic instruments, televisions, radios, etc.

 

Classification of Common Transformers


(1) According to the number of phases:


1) Single-phase transformer: used for single-phase load and three-phase transformer group.


2) three-phase transformer: used for three-phase system up and down voltage.


(2) according to the cooling method:


1) thousand type transformer: rely on air convection cooling, generally used for local lighting, electronic lines road and other small capacity transformer.


2) oil-immersed transformer: relying on oil as cooling medium, such as oil-immersed self-cooling, oil-immersed air cooling, oil-immersed water cooling, forced oil circulation, etc.


(3) By use

1) Power transformer: used for power transmission and distribution system up and down voltage.


2) Instrument transformer: such as voltage transformer, current transformer, used for measuring instruments and relay protection device.


3) test transformer: can produce high voltage, high voltage test of electrical equipment.


4) Special transformer: such as furnace transformer, rectifier transformer, adjusting transformer, etc.


(4) according to the winding type:


1) Double-winding transformer: used to connect two voltage levels in a power system.


2) Three-winding transformer: generally used in regional substation of power system, connecting three voltage levels.


3) Autotransformer: used to connect power systems with different voltages. Can also be used as a general boost or drop back transformer.


(5) according to the form of iron core:


1) Core transformer: power transformer used for high voltage.


2) shell transformer: special transformer for high current, such as furnace transformer, welding transformer; Or power transformers for electronic instruments, televisions, radios, etc.