1. When storing: the newly purchased power cable is sea […]
1. When storing: the newly purchased power cable is sealed with plastic sealing sleeves at both ends, but after a period of use, the rest is wrapped in plastic paper, and the outside is tied with a rope. The tightness is not good. Water vapor will seep into the cable.
2. Cable laying: The cable head wrapped in plastic paper is sometimes immersed in water to allow water to enter the cable; when towing and threading, sometimes the outer sheath is broken.
3. After laying: The cable head is not made in time, and the unsealed cable port is exposed to the air for a long time, or even immersed in water, so that a large amount of water vapor enters the cable.
Here are a few small suggestions and methods to prevent and reduce water ingress into the cable.
1. The cable head should be sealed to the sawed cable end. Whether it is stacked or laid, a special sealing sleeve for the cable should be used to prevent moisture infiltration.
2. The cable head should be made in time after the wire is laid. Strengthen the management of the cable head manufacturing process. Once the cable enters water, the cable head is often the first to break down. Therefore, the cable head can be made well to extend the overall life of the cable.
3. For long cables, use cable branch boxes with several long cables, each of which is about three kilometers in length. For such cables, in addition to intermediate connectors, one or two cable branch boxes are also used. Once one of the cables enters the water , Will not spread to other sections of the cable.