What are the common faults of control cables?
Publish Time: 2024-05-23
1: Lightning shockLightning shock is one of the common natural faults of control cables. Since the armored components of control cables are usually metal conductors, when the power line is short-circuited or lightning strikes the metal parts, a strong current will be generated. This current may propagate through the metal armor layer of the cable, thereby damaging the optical cable line equipment. Lightning shock may not only cause equipment damage, but also pose a threat to personnel safety.In order to prevent lightning shock from damaging the control cable, the following measures can be taken:Install lightning arresters: Install lightning arresters at the incoming and outgoing ends of the cable to limit the overvoltage generated by lightning and guide the lightning current to flow safely into the ground.Strengthen the grounding system: Ensure that the grounding system of the cable is good so that the lightning current can be quickly directed into the ground to reduce the impact on the cable equipment.Use lightning protection materials: In the manufacturing process of the cable, use insulating materials and sheath materials with lightning protection properties to improve the lightning protection ability of the cable.
2: Poor insulation of the optical cable linePoor insulation of the optical cable line is another common fault. If the insulation of the control cable is not done well, the junction box will be flooded or damp, which will cause stress corrosion and static fatigue of the optical cable, thereby reducing the operating strength of the optical cable. In severe cases, the optical cable may break.In order to improve the insulation of the optical cable line, the following measures can be taken:Strictly control the manufacturing quality of the cable: ensure that the insulation material and sheath material of the cable are of qualified quality and avoid using inferior materials.Strengthen the acceptance and testing of the cable: before the cable is put into use, strict acceptance and testing are carried out to ensure that the insulation performance of the cable meets the requirements.Regular inspection and maintenance: Regularly test the insulation resistance and evaluate the degree of aging of the cable to promptly discover and deal with the problem of poor insulation.3: The influence of external forcesExternal force influence is one of the common causes of control cable failure. Since many communication optical cable lines are laid in the field, they are easily damaged by external factors, such as construction excavation, vehicle crushing, natural disasters, etc.In order to reduce the impact of external forces on control cables, the following measures can be taken:Reasonably plan the cable path: When designing and planning the cable path, avoid areas with frequent construction and easy to be damaged by external forces.Strengthen the protection of cables: During the laying of cables, strengthen the protection measures of cables, such as using protective tubes, slope protection, etc.Strengthen inspection and maintenance: Regularly inspect and maintain the cables to promptly discover and deal with problems of external force damage.4: Failures at line jointsThe line joint is one of the places where control cables are prone to failure. Since the optical fiber at the joint has no protection for the original optical cable structure or the protection has been significantly weakened, the joint is more susceptible to external factors.In order to reduce failures at line joints, the following measures can be taken:Strictly control the quality of the joint: When manufacturing and installing cable joints, strictly follow the process requirements to ensure the quality of the joints.Strengthen the protection of the joints: Strengthen the protection measures at the joints, such as using protective sleeves, sealants, etc., to prevent the joints from getting damp or damaged.Regular inspection and maintenance: Regularly inspect and maintain the cable joints to promptly discover and deal with problems at the joints.
