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Power cords are wires that carry electrical current. Usually, the way of current transmission is the point-to-point transmission. Power cords can be divided into AC power cords and DC power cords according to their uses. Usually, AC power cords are wires that pass through high-voltage alternating current. Due to the high voltage, such wires need a unified standard to obtain safety certification before they can be officially produced. The DC line basically passes direct current with a lower voltage, so the safety requirements are not as strict as the AC line, but for safety reasons, countries still require unified safety certification.
composition structure
The structure of the power cord is not very complicated, but don’t simply see through it from the surface. If you study the power cord well, you still need a professional to understand the structure of the power cord in some places.
The structure of the power cord mainly includes an outer sheath, an inner sheath, and a conductor. Common transmission conductors include copper and aluminum wire.
outer sheath
The outer sheath, also known as the protective sheath, is the outermost sheath of the power cord. This outer sheath plays the role of protecting the power cord. The outer sheath has powerful characteristics, such as high-temperature resistance, and low-temperature resistance, It has the characteristics of resistance to natural light interference, good winding performance, long service life, and environmentally friendly materials.
inner sheath
The inner sheath, also known as the insulating sheath, is an indispensable intermediate structural part of the power cord. The main purpose of the insulating sheath is insulation, as the name implies, to ensure the safety of the power cord and prevent any leakage between the copper wire and the air. phenomenon and the material of the insulating sheath should be soft to ensure that it can be well embedded in the middle layer.
copper wire
The copper wire is the core part of the power cord. The copper wire is mainly the carrier of current and voltage. The density of the copper wire directly affects the quality of the power cord. The material of the power cord is also an important factor in quality control, and the quantity and flexibility of the copper wire are also one of the factors to be considered.
inner sheath
The inner sheath is a layer of material that wraps the cable between the shielding layer and the core, usually polyvinyl chloride plastic or polyethylene plastic. There are also low-smoke halogen-free materials. Use it according to the process regulations, so that the insulating layer will not come into contact with water, air, or other objects, and avoid the insulation from being damp and the insulating layer from mechanical damage.
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