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How to Find Faulted Wires and Cables
Jan 20, 2019

      Wire and cable faults can be summarized as grounding, short circuit and breaking, which can be divided into the following categories.

      (1) Short circuit fault. Two-core or three-core short circuit of cable.

      (2) Grounding fault. One or more cores of cable are grounded.

      (3) Broken line fault. One or more cores of the cable are broken by the burning of fault current or the damage of external force, resulting in complete or incomplete disconnection.

      (4) Flashover fault. Most of these faults occur in preventive tests, and most of them occur at cable joints. When the applied voltage reaches a certain value, the breakdown occurs, and when the voltage reaches a certain value, the insulation resumes.

      Faults with two or more properties are called comprehensive faults. It is difficult to find the comprehensive faults of wires and cables intuitively. It is necessary to use DFDL-S cable fault tester produced by Dingsheng Electric Power Company to determine the location of the faults. DFDL-S power cable fault tester can comprehensively analyze and detect buried power cable faults, mine cable faults, communication cable faults, street lamp cable faults, high and low voltage cable faults, directly buried cable faults, open circuit, short circuit, flashover discharge faults, high resistance leakage faults, high resistance flashover faults, low and low resistance grounding contact faults. 。 It can accurately locate and locate cable fault points. It is a reliable portable digital cable fault comprehensive analysis and detection instrument in China. The cable fault tester can be used to measure the fault distance of the main line over 35 kv. The cable fault tester can be used to test various types of power cables and communication cables with different voltage levels.

      Generally speaking, cable faults can be summarized as grounding, short circuit and broken line.



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