The application of cable tray is very extensive, but after a long time of use, it is easy to produce aging phenomenon. After aging, the safety of cable tray will be greatly reduced, so it is necessary to replace it in time. Let's take a look at the causes of cable tray aging.
Cause analysis of cable bridge aging
1. The temperature and humidity of the use environment, if the use environment is relatively high, then the aging phenomenon is more likely to occur after a long time of use. At the same time, another main reason for the aging of cable tray is its environmental humidity. If the humidity is too high, its aging speed will be very impressive.
2. Chemical and electrolytic corrosion, if it is used in acidic or alkaline environment for a long time, the insulation, aging and even damage of cable skin will be reduced after long-term corrosion.
3. If the cable is operated under overload condition for a long time, the aging phenomenon will be accelerated. At the same time, excessive heat generated by high load operation can break through the cable insulation, which is very dangerous.
4. Mechanical damage of cable tray, mechanical damage is also an important reason for the aging of cable tray. At the same time, mechanical damage may lead to internal cable damage, so it is necessary to take necessary protection measures for the bridge.
5. External force damage is usually caused by external mechanical damage. For example, in the process of construction, if the cable is not properly protected, some metal materials will easily cause damage after encountering unprotected cable.
6. For the corrosion phenomenon caused by damp, the cable is usually laid in some places with poor environment, for example, it is installed in a humid and dark environment. At this time, it is easy to produce corrosion after a long time of damp, and eventually lead to the aging phenomenon of cable.
7. If the cable runs in an overload environment for a long time, it will produce excessive current thermal effect, which will make the cable temperature rise to and lead to its aging.
8. Environment and temperature. The external environment and heat source in which the cable is located can also cause high temperature, insulation breakdown, and even explosion and fire, resulting in very serious problems.
If the aging phenomenon of cable tray in Shandong Province is serious, it is necessary to repair it in time and replace it completely if necessary, so as to play a better protection role.