NR4100 series cable fault tester is a high-tech product. It adopts modern classic DC high voltage flashover method, impulse high voltage inductance sampling method, impulse high voltage current sampling method, low voltage pulse method and other test methods. It is suitable for measuring various cross-sections. , Power cables of different media and various materials, high-frequency coaxial cables with low resistance, short circuit, open circuit disconnection faults, high resistance leakage and high resistance flashover faults. It can also be used to detect short circuit, open circuit and mixed line faults of local telephone cables. It can also be used for proofreading the total length of the cable.