The internal structure of the transformer on the pole mainly consists of the core, windings, tank (box), and accessories. The following are the main functions and characteristics of each part:
1. **Iron core**: it is the magnetic circuit part of the transformer, which is usually made of silicon steel sheets stacked together, these silicon steel sheets have good magnetic conductivity and small hysteresis loss. The core posts are fitted with windings and the yoke is used to connect the core to form a closed magnetic circuit.
2. ** winding **: transformer windings have the same core type and overlapping two types. In China's production of power transformers, the winding is mainly used with the core structure. Winding is divided into high-voltage winding and low-voltage winding, usually low-voltage winding is placed in the inner layer near the core, while the high-voltage winding is placed in the outer layer. There are certain insulation gaps and heat dissipation channels between the windings and between the windings and the core to ensure electrical safety and heat dissipation.
3. **The oil tank (box)**: The oil tank is the outer shell of the transformer, which is used to contain the iron core and the windings, and is filled with transformer oil. The main role of the transformer oil is to strengthen the insulation between the windings, windings and iron core, and help the windings and iron core heat dissipation. The oil tank is also equipped with high-voltage and low-voltage insulating bushings for drawing out the winding lead wires and to ensure good insulation for connection with external circuits.
4. **Accessories**: including oil pillow, heat pipe, etc.. Oil pillow is used to adjust the oil level and oil temperature in the oil tank, to ensure the normal operation of the transformer oil. The heat pipe is used to emit the heat generated during the operation of the transformer to ensure that the temperature of the transformer is within the normal range.
Please note that all of these components are precisely designed and manufactured to ensure that the transformer can operate safely and efficiently. During the manufacturing process of the transformer, factors such as the selection of insulation materials, the winding process of the windings, and the sealing of the tank also need to be considered to ensure the overall performance and quality of the transformer.
Since transformers on utility poles are usually in overhead locations and have complex internal structures, non-professionals should not attempt to disassemble or repair them on their own. If maintenance or inspection is required, professional electrical staff should be contacted to perform the operation.
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