Basic structure of power cable

Release time:

2024-03-26

Power cable is an important equipment for transmitting electric energy and is widely used in various fields. Its basic structure includes several main parts such as conductor, insulating layer, shielding layer and protective layer.

Basic structure of power cable

Power cable is an important equipment for transmitting electric energy and is widely used in various fields. Its basic structure includes several main parts such as conductor, insulating layer, shielding layer and protective layer.

1. conductor

The conductor is the core part of the power cable and is responsible for transmitting electrical energy. Commonly used conductor materials are copper and aluminum, which have good electrical conductivity and ductility, and are easy to process. The cross-sectional shape of the conductor has a variety of circular, fan-shaped, etc., to meet the needs of different voltages and currents.

2. insulation layer

The insulation layer is the part surrounding the outside of the conductor, and its main function is to prevent leakage and insulation failure during power transmission. Insulation materials require good electrical properties and aging resistance, commonly used insulation materials are cross-linked polyethylene, polyvinyl chloride and so on.

3. shield

The shielding layer is set to reduce the interference of the electromagnetic field to the cable. In high-voltage cables, the shielding layer can suppress the interference of electric and magnetic fields and ensure the stable transmission of electric energy. The shielding material is generally a copper tape or a copper wire braid.

4. protective layer

The protective layer is to protect the cable from the external environment, such as moisture intrusion, mechanical damage, etc. The protective layer is divided into an inner sheath and an outer sheath. The inner sheath is close to the insulating layer, and the outer sheath covers the entire cable. The material of the protective layer is required to have good corrosion resistance and mechanical strength.

In addition, the power cable has auxiliary structures such as filler and stranded wire. The filler is used to fill the gap inside the cable and make the cable structure more compact. The stranded wire is used to fix the conductor and the shielding layer to ensure the stability of the cable.

In general, the basic structure of power cables is a relatively complex and sophisticated system. Each part has its own unique function and function, which ensures the stable transmission of electric energy. In practical applications, there are many types and specifications of power cables, and the structure will be adjusted according to specific needs. In order to ensure the safety and performance of power cables, it is important to select the appropriate cable type and install it correctly.

The above is the basic structure of the power cable, I hope to inspire and help you.

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Basic structure of power cable