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What are the types of transformers?

Release time:

2024-12-26

Classified by cooling method: dry (self-cooled) transformer, oil-immersed (self-cooled) transformer, fluorinated (evaporative cooling) transformer.

1. By phase type

1. Single-phase transformer: Used for single-phase loads and three-phase transformer groups.

2. Three-phase transformer: Used for step-up and step-down voltage in three-phase systems.

2. By cooling method

1. Dry-type transformer: Relies on air convection for natural cooling or adds fan cooling, commonly used in high-rise buildings, high-speed toll stations, and small capacity transformers for local lighting and electronic circuits.

2. Oil-immersed transformer: Relies on oil as a cooling medium, such as oil-immersed self-cooling, oil-immersed air cooling, oil-immersed water cooling, forced oil circulation, etc.

3. By purpose

1. Power transformer: Used for step-up and step-down voltage in power transmission and distribution systems.

2. Instrument transformer: Such as voltage transformers, current transformers, used for measuring instruments and relay protection devices.

3. Test transformer: Can generate high voltage for high voltage testing of electrical equipment.

4. Special transformer: Such as electric furnace transformers, rectifier transformers, regulating transformers, capacitive transformers, phase-shifting transformers, etc.

4. By winding form

1. Double-winding transformer: Used to connect two voltage levels in the power system.

2. Triple-winding transformer: Generally used in regional substations of power systems, connecting three voltage levels.

3. Auto-transformer: Used to connect power systems of different voltages. It can also be used as a regular step-up or step-down transformer.

2024-12-26

Understanding the principle of a transformer involves grasping how it transfers electrical energy between two or more circuits through electromagnetic induction. A transformer typically consists of two coils of wire, known as the primary and secondary windings, wrapped around a core made of magnetic material. When an alternating current (AC) flows through the primary winding, it creates a magnetic field that induces a voltage in the secondary winding. The ratio of the number of turns in the primary and secondary windings determines whether the transformer steps up (increases) or steps down (decreases) the voltage. This principle is fundamental in electrical engineering and is widely used in power distribution and various electronic devices.

2024-12-26

How to maintain a transformer?

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Methods for Handling Transformer Failures

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What methods are there for drying transformers?

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What are the types of transformers?

2024-12-26

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