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Common causes of wire and cable faults

2023-02-27
1. Chemical carbonization of wire and cable

Wire and cable in the transmission process will generate heat energy, this heat energy may cause certain damage to their own materials, therefore, in the design process of the line, should also be added to the heat dissipation device, so that the heat quickly dissipated, prevent the insulation layer of wire and cable carbonization, prolong its service life.

2. Insulation sheath aging

In the traditional architectural design, there are many cables in the wall joint of the building, in the absence of protective devices, wire and cable will be prone to aging, especially after entering the summer, affected by thunderstorms, humid air, the aging wire is more prone to failure, seriously affecting the use of wire and cable safety.

3. Quality problems of wires and cables

Wire and cable seemingly simple design principle, in fact, very high requirements for detailed design, once the cable itself has quality problems, it will affect the normal transmission of power. Therefore, in order to avoid the occurrence of short circuit and other phenomena, designers need to give strict requirements on the quality of wire and cable, and scientific design for different cable link hubs. At present, the electric wire and cable quality problem is relatively serious, waterproof cable design does not meet the actual regulation; The unreasonable design of cable promotion leads to a series of transmission failures.

4. Cables and cables are damaged due to overload of transmission voltage

In the process of electric power transportation, the damage of wires and cables is mostly caused by the direct action of external forces, and some are affected by natural disasters, leading to the wires and cables are broken, unable to carry out normal power supply. The fault of the wire and cable of the building is because the weight of the wire is too large, which leads to the vertical pressure of the wire and cable, so that the external insulation layer is broken. In addition, it also includes some human factors, such as the materials purchased by the construction team do not meet the construction design regulations, or the construction personnel do not carry out construction in accordance with the standards, which will lead to the damage of wires and cables.

5. Wires and cables are damaged by external mechanical forces

The material of wire and cable itself has a certain pressure range. Once the pressure is too large, the insulation layer of wire and cable will be burned out. In addition, lightning strikes can cause wires and cables to carry excessive voltage, which can eventually damage the cables. Therefore, the power grid dispatching personnel must be in strict accordance with the national regulations for power distribution, to ensure that the voltage of the transmission line always does not exceed its own maximum value, so as to avoid the occurrence of wire and cable damage. The residents in economically developed areas have a large demand for electricity, and the distance of electric power transportation is relatively long. Once we do not pay attention to it, the above problems are easy to occur. In serious cases, serious accidents will occur, endangering the safety of residents' lives and property.


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