High-voltage cables are widely used as a kind of wire and cable

The main types of high-voltage cables are as follows: the main types of medium-voltage cables are YJV cables, VV cables, YJLV cables, VLV cables; YJV cables are known as cross-linked polyethylene-insulated PVC-sheathed power cables (copper core); VV cables are known as PVC-insulated PVC-sheathed power cables (copper core); YJLV cables are known as cross-linked polyethylene-insulated PVC-sheathed aluminum core Power cable; VLV cable is called PVC insulated PVC sheathed aluminum core power cable. The components of high voltage cable from inside to outside include: conductor, insulation, inner sheath, filling material (armored), outer insulation. Of course, armored high-voltage cables are mainly used for underground burial, which can resist high-intensity compression on the ground, and at the same time can prevent other external damage. Commonly used high-voltage cable specifications and uses. High-voltage cable characteristics: suitable for AC rated voltage 35KV and below for transmission and distribution of power can be fixed granular lines, cable conductor of the higher long-term operating temperature of 90 degrees, short-circuit (the longest time not more than 5S), the cable conductor higher temperature does not exceed 250 degrees. Extra-high-voltage cable 1KV and below for low-voltage cable; 1KV ~ 10KV for medium-voltage cable; 10KV ~ 35KV for high-voltage cable; 35 ~ 220KV for extra-high-voltage cable; ultra-high-voltage cable is with the continuous development of cable technology and the emergence of a kind of power cables, ultra-high-voltage cables are generally used as a large-scale transmission system in the pivotal link, belongs to the technical content of a high voltage cable, mainly Used for long-distance power transmission.

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