Electric power engineering is one of the livelihood projects, and it is also an essential construction project for every rural community. However, no matter large or small-scale engineering construction, the cable problem is the core problem in the construction of electric power engineering, and the cable engineering directly involves personal safety problems, which must be paid great attention to. So, what are the precautions in the cable construction?
1. Mechanical damage caused by power cable turning:
Due to the large outer diameter of power cable, it is difficult to transport and lay, and the turning radius of power cable is also strict. In the process of cable construction, it is necessary to reduce the torsion force on the cable as much as possible. When the cable turns and reserves the cable, the cable should be in natural bending, and the internal mechanical damage should be eliminated.
2. Eddy current caused by high current power cable
In the construction of power cables, there are steel supports, steel protective tubes, cable clamps and overhead laying. All steel (iron) closed circuits formed around power cables may form eddy currents, especially in high current power cable system. Therefore, the power engineering company reminds that measures must be taken to ensure the safety of power cables The steel (iron) closed circuit can not be formed around the cable to prevent eddy current caused by the cable.
3. Pay attention to moisture proof of power cable
It is understood that most of the faults of medium and low-voltage power cables are caused by the faults of intermediate joints and terminal heads of cables, while most of the faults of intermediate joints and terminal heads are caused by poor sealing and moisture intrusion. The medium and low voltage power cable network mostly adopts the dendritic power supply mode, and there are a large number of cable terminals. Therefore, it is one of the important measures to ensure the safe and reliable operation of the cable to block and seal the cable terminals and intermediate joints.