Transformers are divided into several. What is the role of each? To be specific!
(Ii) Classification by purpose
Transformers according to their use can be divided into power transformers, audio transformers, pulse transformers, constant voltage transformers, coupling transformers, autotransformers, isolation transformers and other.
(C) according to the core (or core) shape classification
Transformers according to the core (core) shape can be divided into "E" type transformers, "C" type transformers and ring transformers.
Transformer is the instrument that regulates voltage!
Transformers can be classified according to their operating frequency, use and core shape.
(1) Classification by operating frequency
Transformers according to the operating frequency can be divided into high-frequency transformers, IF transformers and low-frequency transformers.
Types and characteristics of commonly used transformers
?????Commonly used transformer classification can be summarized as follows:
?????1, according to the number of points:
?????(1) single-phase transformer: for single-phase load and three-phase transformer group.
?????(2) three-phase transformer: for three-phase system of the rise and fall voltage.
?????2, according to the cooling method points:
?????(1) dry-type transformers: rely on air convection cooling, generally used for local lighting, electronic circuits and other small-capacity transformers.
?????(2) oil-immersed transformers: rely on oil as a cooling medium, such as oil from the cold, oil-cooled air-cooled, oil-soaked water, forced oil circulation.
?????3, according to the use of points:
????(1) power transformer: for the transmission and distribution system of the rise and fall voltage.
?????(2) instrument with transformers: such as voltage transformers, current transformers, for measuring instruments and relay protection devices.
?????(3) test transformer: to produce high pressure, the electrical equipment for high-pressure test.
?????(4) special transformers: such as electric furnace transformers, rectifier transformers, adjust the transformer and so on.
?????4, according to the winding form points:
?????(1) Double winding transformer: Used to connect two voltage levels in the power system.
?????(2) three-winding transformer: generally used in power system area substation, connecting three voltage levels.
?????(3) Autotransformer: Power system for connecting different voltages. Can also be used as a normal step-up or down transformer.
?????5, according to the core form points:
?????(1) core transformer: for high voltage power transformers.
?????(2) shell transformers: special transformers for high current, such as electric furnace transformers, welding transformers; or for electronic equipment and television, radio and other power transformers.
