The classification of commonly used transformers can be […]
The classification of commonly used transformers can be summarized as follows:
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 raising and lowering voltage of three-phase system.
Second, according to the cooling method:
(1) Dry-type transformers: rely on air convection for cooling, generally used for small-capacity transformers such as local lighting and electronic circuits.
(2) Oil-immersed transformer: rely on oil as cooling medium, such as oil-immersed self-cooling, oil-immersed air cooling, oil-immersed water cooling, forced oil circulation, etc.
3. According to usage:
(1) Power transformer: used to raise and lower the voltage of the transmission and distribution system.
(2) Instrument transformers: such as voltage transformers, current transformers, measuring instruments and relay protection devices.
(3) Test transformer: It can generate high voltage and conduct high voltage test on electrical equipment.
(4) Special transformers: such as electric furnace transformers, rectifier transformers, regulating transformers, etc.
4. According to the winding form:
(1) Double winding transformer: used to connect two voltage levels in the power system.
(2) Three-winding transformer: generally used in power system area substations, connecting three voltage levels.
(3) Autotransformer: used to connect power systems with different voltages. It can also be used as an ordinary step-up or step-down transformer.
5. According to the form of iron core:
(1) Core transformer: used for high-voltage power transformers.
(2) Shell transformers: special transformers for large currents, such as electric furnace transformers, welding transformers; or power transformers for electronic instruments, televisions, radios, etc.
Zhejiang Dechuang Transformer Manufacturing Co., Ltd.