- Jul 13, 2020-
Everyone knows that water in the cable is a very serious problem. Sometimes you think that you have done a good waterproof measure, but the cable is still getting water. So how does the cable get water? Let me introduce to you the causes and countermeasures of water ingress in cables.
1. When storing: the newly purchased power cable is sealed with plastic sealing sleeves at both ends, but after a section is used, 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. When laying the cable: When laying the cable, 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, so that 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.
Now that the reason for the water in the cable is known, are there any remedies? At present, as far as I know, there is no remedial measure, only prevention. Here are a few small suggestions and methods to prevent and reduce cable water ingress.
1. The cable head should be sealed. Whether it is stacked or laid, the cable end should be sealed with a special sealing sleeve to prevent moisture infiltration.
2. Make the cable head in time after laying the wires. Strengthen the management of the cable head manufacturing process. Once the cable enters water, the cable head is 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 water , Will not spread to other sections of the cable.