Common faults and treatment of power cable

Ground or short circuit fault, line break fault, line break and ground fault and flashover fault. Fault diagnosis method

    The way to determine the type of cable fault is to measure the insulation resistance of each phase at one end of the line with an insulation resistance meter. The fault type is determined based on the following conditions:

    (1) When the insulation resistance of one or several cores of the cable to the ground, or the insulation resistance between cores is lower than 100 kω, it is a low resistance grounding or short circuit fault.

    (2) When the shaking test cable core or several core insulation resistance to the ground, or the insulation resistance between the core and the core is much lower than the normal value, but higher than 100 kiloohms, high resistance grounding fault.

    (3) when shaking cable