We are professional Power Cord Manufacturers. Let me introduce the structure and function of the power cord to you.

　　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 pass through high-voltage alternating current wires. Due to the high voltage, such wires require 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.

　　The structure of the power cord

　　The structure of the power cord is not very complicated, but don’t simply see 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 outer more 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, as the name suggests, is insulation, which ensures the safety of the power cord and prevents 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. [1]

　　inner sheath

　　The inner sheath is a layer of material that wraps the cable between the shielding layer and the core, which is generally polyvinyl chloride plastic or polyethylene plastic. There are also low-smoke halogen-free materials. Use in accordance with 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.

　　Action performance

　　For home appliances, although the power cord is only an accessory, it plays a vital role in the use of the home appliance. If the power cord is broken, the entire appliance cannot be used. Household power cords should be BVV2×2.5 and BVV2×1.5 type wires. BVV is the national standard code, which is copper sheathed wire. 2 × 2.5 and 2 × 1.5 represent 2 cores of 2.5 square millimeters and 2 cores of 1.5 square millimeters, respectively. Under normal circumstances, 2×2.5 is used as the main line and trunk line, and 2×1.5 is used as a single electrical branch line and switch line. BVV2 × 4 is used for the single-phase air-conditioning dedicated line, and a dedicated ground wire is additionally provided.