Why is the galvanized cable tray skin aging?
1. Insulation and moisture. Usually, this is relatively common and usually occurs at cable joints directly buried or excited. For example, if the cable tray joint is unqualified, the joint is carried out under wet gas conditions. The joint is imported or mixed into water vapor, forming water branches under the effect of electric field, and the insulation strength of the cable is gradually damaged.
2. Corrosion of chemical raw materials. The cable tray is directly buried in the acid base effect area. It usually constitutes the armor, lead or outer sheath of the cable, which leads to chemical corrosion or electrolytic corrosion for a long time, leading to the failure of the protective layer, insulation, and it will also lead to cable defects.
3. For long-term overload transportation, due to the thermal effect of current, the load current will definitely lead to the heating of the conductor, charging at the same time, as well as the eddy current loss of steel armor, and the loss of insulating medium can also be added, and then the temperature increases. When overloaded for a long time, the excessive temperature accelerates the age of insulation and breaks the insulator. Especially in hot summer, the temperature rise of the cable often leads to the primary breakdown unit of the cable insulation, so in summer, the cable has many shortcomings.
4. Disadvantages of cable connector. The bridging joint is the thinner of the cable, which is usually caused by the shortcomings of the cable joint caused by the direct negligence (consumption) of personnel. In the process of manufacturing cable connections, the construction personnel may cause the cable head to be reduced, and then trigger the explanation of cable head without sufficient network.
5. Environment and temperature elements. The external environment and heat source around the cable tray and cable will also constitute cable temperature, insulation breakdown and serious composition explosion.
6. Danger of external force. At present, the shortcomings of cables are mainly caused by mechanical hazards. For example, please refer to: when using cables, do not standardize the structure, and simply pose a mechanical hazard; It is easy to participate in civil engineering in direct burial cables. In some cases, the harm of cables is not serious. Maybe a few months or years may have a disadvantage of harmful parts. Heavy cable damage may cause short circuit, which will directly affect the cable tray. Problems in motor production.
The above is a detailed introduction of Jinan cable bridge for you. I hope it will help you. If you have any questions, please contact us. We will provide services for you with a professional attitude http://www.sdhangfeng.com