Titanium Dioxide for Coating and Paint Tio2 Coating,Titanium Dioxide Varnishes,Titanium Dioxide Colorant,Titanium Dioxide Paint Coating TINOX CHEMIE GMBH , https://www.tinoxglobal.com
2. When cables are laid, they often need to cross roads, bridges, and culverts. Due to the weather or other reasons, a lot of water often accumulates in cable trenches. In the laying process, it is inevitable that cable heads will be immersed in water. The water enters the cable due to loose or damaged plastic wrap; in addition, the external sheath and even the steel file are sometimes scratched when pulling and piping. This phenomenon is particularly prominent when mechanical traction is used.
3. After the cable laying was completed, the cable head was not manufactured in time because of the on-site construction conditions, so that the unsealed cable fractures were exposed to the air for a long period of time or even immersed in water, causing a large amount of moisture to enter the cable.
4. During the manufacture of the cable head (including the terminal head and the intermediate connector), due to negligence of the construction personnel, the newly processed cable tip may accidentally fall into the standing water.
5 The water in the cable trench will enter the interior of the cable along the fault point; in the civil construction, especially in the construction site where the large-scale construction machinery is used, the cable breakage or breakdown accident caused by various human factors is also common. . When such an accident occurs, the cable insulation is severely damaged and the cable can also cause water ingress.
High-voltage cables are affected by moisture and harm in operation
Damage to high-voltage cable and its operation 1. Causes and hazards of moisture and water entering the cable The newly-inserted whole-disc cable is sealed at the factory with plastic sealing sleeves, but it is used after a period of time according to the actual situation at the construction site. The rest of the parts are simply wrapped with plastic sheeting, and because of the open air and poor sealing, it is inevitable that water vapor will infiltrate the cable.