Is YJV cable soft? Causes and Countermeasures of power cable line fault in Zhengzhou yicable Co., Ltd

  　　  Causes and Countermeasures of power cable line faults in Zhengzhou Yixian Cable Co
, Ltd
External force damage: external force damage may be suffered during the storage, transportation, laying and operation of cables, especially the direct buried cables that have been operated, which are easy to be damaged in the ground construction of other projects
Such accidents often account for 50% of cable accidents
In order to avoid such accidents, in addition to strengthening the work quality of cable storage, transportation, laying and other links, it is more important to strictly implement the ground breaking system Corrosion of protective layer: the electrochemical corrosion of underground stray current or the chemical corrosion of non neutral soil make the protective layer invalid and lose the protective effect on insulation
The solution is to install drainage equipment in the area with concentrated stray current; When the local soil on the cable line contains chemicals that damage the lead package of the cable, the cable shall be installed in the pipe, and the neutral soil shall be used as the cable liner and cover, and the cable shall be coated with asphalt Overvoltage and overload operation: improper selection of cable voltage, sudden entry of high voltage during operation or long-term overload may damage the insulation strength of the cable and break down the cable
This needs to be solved in time by strengthening patrol inspection and improving operating conditions Water immersion of outdoor terminal head: due to poor construction and insufficient filling of insulating glue, the terminal head was immersed in water and finally exploded
Therefore, it is necessary to strictly implement the construction process regulations and carefully accept them; Strengthen inspection and timely maintenance
The oil leakage at the terminal head destroys the sealing structure, causes the loss and drying of the impregnant at the cable end, increases the thermal resistance, accelerates the aging of the insulation, is easy to absorb moisture and cause thermal breakdown
In case of oil leakage at the terminal head, patrol inspection shall be strengthened, and in serious cases, power failure shall be conducted again