The three-phase transformer is an indispensable and important equipment in the power system, which is used to transform voltage and current to meet the needs of different electrical equipment. To fully understand the three-phase transformer, you first need to be familiar with its basic structure.
1. Iron core
The iron core is the core part of the transformer, which is stacked by high-permeability silicon steel sheets and is usually E-shaped or C-shaped. Its main function is to provide a low-magnetic resistance magnetic circuit so that most of the magnetic flux can be concentrated in the iron core, thereby improving the efficiency of the transformer. The design and manufacturing quality of the iron core directly affect the performance and efficiency of the transformer.
2. Winding
The winding is the circuit part of the transformer, which is wound by insulated copper wire or aluminum wire. The three-phase transformer has three windings, corresponding to the three phases A, B, and C respectively. Each winding is divided into high-voltage winding and low-voltage winding, which are used to achieve voltage conversion. Good insulation must be maintained between the windings and between the windings and the iron core to prevent faults such as short circuits or leakage.
3. Oil tank
The oil tank is a component that stores transformer oil and supports the iron core and windings. Transformer oil has good insulation and heat dissipation properties, which can effectively protect the core and winding from moisture and corrosion, and help dissipate heat to ensure that the transformer maintains a stable operating temperature during long-term operation.
4. Other accessories
In addition to the above main components, the three-phase transformer also includes some accessories, such as tap changers, thermometers, desiccant, etc. These accessories play an important auxiliary role in the operation of the transformer. For example, the tap changer can adjust the output voltage, the thermometer is used to monitor the operating temperature of the transformer, and the desiccant is used to absorb and remove moisture in the oil tank to keep the inside of the transformer dry.
