The components of high-voltage cables from the inside out include: conductor, insulation, inner sheath, outer insulation, and shielded and unshielded. Conductor materials include various conductor types such as bare copper, tinned copper and aluminum alloy.


New energy vehicle high-voltage cables are used in areas such as connecting the charging port to the battery, inside the battery, between the battery and other components of the engine, and battery energy storage equipment as a carrier for power transmission. The principle is the same as some low-voltage harnesses, however, the specification type should be chosen according to the voltage.


Indeed, the shielding layer of high-voltage cable: is the transmission cable with a shielding layer to form a cable with the ability to resist external electromagnetic interference. The shield of this cable is mostly made of braided metal wire or metal film, and there are many different ways of single and multiple shielding. Single shielding refers to a single shielding network or shielding film, in which one or more wires can be wound. The multi-shield approach is a multiple shielding network with a shielding film in one cable. Some are used to isolate electromagnetic interference between conductors, while others are double shielded and used to enhance the shielding effect. The shielding mechanism is to ground the shield to isolate interference voltages generated by external connections to the conductors. These products are suitable for transformers and similar devices. Of course, unshielded cables are also one of the high-voltage cables. In contrast to shielded high-voltage cables, unshielded twisted pair cables are composed of multiple pairs of twisted wires and a plastic sheath. The use of increased winding density and high quality adiabatic materials greatly improves the properties of the transmission medium.


Insulation materials: commonly used insulation materials that do not conduct electricity are resin, plastic, PVC materials, silicone rubber, etc.; these materials are used as the insulation layer of the cable to prevent contact between the conductor and the outside world, to avoid cable leakage or short circuit. In terms of use, the application of insulated cable wire is very wide; like most of the electrical connection wires we usually use at home are insulated wires; there are many large high-rise buildings, electrical equipment, power engineering, etc. are using insulated cables. Insulated wire model also has a direct correlation with the use, different letters not only represent different models, but also represent different uses. For example, R indicates a soft copper wire, S indicates a twisted pair, P indicates a shielded wire.

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