We all know that cable water is a very serious problem, sometimes you think you have done a very good waterproof measures, but the cable or the water.
Then the cable is how the water?
Custody:
The newly purchased power cable, the two are sealed with plastic seal, but with a period of time, the rest of the plastic paper wrapped with a rope outside the bar, the seal is not good, the day for a long time, Water vapor will penetrate the cable.
Cable laying:
The plastic paper wrapped with the cable head is sometimes immersed in water, so that water into the cable; in the traction and pipe, sometimes the phenomenon of external sheath rupture.
After laying:
Not in time for the production of cable head, so that the cable port without long-term exposure to the air, or even immersed in water, so that a large number of water vapor into the cable.
Now know the reasons for the cable water.
At present, as far as I know there is no remedial measures, can only prevent the following few small suggestions and methods to prevent and reduce the cable water measures.
1. The cable head should be sealed saw the cable end, whether it is stacked or laying, are required to use a cable-specific seal to prevent moisture infiltration.
2. After the wire laying in time for the production of cable head. Strengthen the cable head production process management Once the cable water, the earliest breakdown phenomenon is often the cable head, so the wire head made well, you can extend the overall life of the cable.
3. Long cable with cable branch box a few long cable, each length of about three thousand meters, for such a cable, in addition to doing the middle connector, but also with one to two cable branch box, once one of the cable water , Will not spread to other sections of the cable.