Abstract: In recent years,with the rapid growth of 10 kV high-voltage cable equipment volume year by year,the number of cable faults has gradually increased.It is essential to conduct an in-depth research,analyze the causes and develop countermeasures to eliminate faults in the bud.A typical 10 kV cable fault repair,cause analysis and other processes was introduced.A class of transformer low-voltage side neutral point charged triggered by the highvoltage side 10 kV cable safety risks was analyzed.And targeted preventive measures to ensure timely detection and elimination of such risks were put forward to ensure the safe and stable operation of cable equipment.