Meaning of YJV wire and cable

YJV wires and cables, YJ stands for cross-linked polyethylene insulation, V stands for PVC sheath, and the name of YJV cable model is: cross-linked polyethylene insulated PVC sheathed power cable. Most of the black sheathed cables we usually see are YJV cables. Generally, the main power line is also YJV cables, which is one of the most commonly used types of power cables.

YJV wire and cable model

The specific size and model include: 1 square, 1.5 square, 2.5 square, 4 square, 6 square, 10 square, 16 square, 25 square, 35 square, 50 square, 70 square, 95 square, 120 square, 150 square, 185 square, 240 square and 300 square. For example, the yjv3 * 185+2 * 95 cable is a cable composed of three 185m2 phase lines and two 95m2 ground wires. Since the combination between the phase lines and ground wires of the cable is regulated by standards, the 95m2 behind the yjv3 * 185+2 * 95 cable can be omitted.

Use of wire and cable YJV

YJV cable is mainly used to transmit and distribute electric energy. It is most commonly used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. Power cable is a cable product used to transmit and distribute high-power electric energy in the main line of the power system, including 1-500KV and above power cables with various voltage levels and insulation. Our company Guangdong South Cable focuses on the cable industry, specializing in the R&D and production of YJV power cables.

Difference between YJV wire and cable and VV wire and cable

1. Different names of products have different meanings.    YJV insulation uses cross-linked polyethylene, and VV insulation uses polyvinyl chloride;    2. There are also differences in production equipment and process manufacturing between the two.    VV is plastic cable, YJV is cross-linked cable, and its insulation performance is better than plastic cable; YJV only cross-linked the insulating material to improve the heat resistance temperature, while VV did not. YJV cable has a working temperature of 90 degrees, while VV is only 70 degrees. YJV cable with the same cross-sectional area has a large ampacity; The maximum rated temperature of VV cable conductor during operation is 70 ℃, and the maximum temperature during short circuit (duration less than 5 seconds) shall not exceed 160 ℃. The maximum rated temperature of YJV cable conductor during operation is 90 ℃, and the maximum temperature during short circuit (duration is less than 5 seconds) shall not exceed 250 ℃; YJV is better than VV in the long run (long service life, etc.), but more expensive than VV. Of course, the commonly used cables are generally YJV cables, but some people are used to calling them VV cables.