Choosing the right power cable fault tester depends primarily on the specific equipment requirements. While there are no specific requirements for the equipment, generally speaking, if the same type of equipment has never been purchased and used before, the cable types are high-voltage and low-voltage. Cable laying methods include direct burial, cable trenches, and overhead installations, and there are no specific equipment requirements. Guodian Xigao recommends using a power cable fault tester with three key functions: rough fault distance measurement, cable path detection, and detailed fault point identification. Specifically, a rough fault point detector should include a flash test function for testing cable length using a low-voltage pulse pulse and high-resistance faults.
For users who have selected and used the power cable fault testers mentioned above, similar equipment with improved functionality can be purchased next time for greater efficiency. Alternatively, a tester with a different testing principle can be purchased based on the specific conditions of the equipment. For example, if a large number of cables are laid in a cable trough, a high-voltage intelligent bridge tester can be used. After testing the fault distance, the cable trench can be opened to identify damage and the fault point can be located. If there are more directly embedded cables and the cables are new, a tester using the step voltage testing principle can be used. If funds permit, you can purchase different types of testers, choosing flexibly based on site conditions.
If your application is very simple, you can purchase a streetlight cable fault tester. However, please note that the equipment you purchase must have pulse testing, bridge testing, and fault diagnosis capabilities. Both the voltage method and the acoustic measurement method can be used to test most streetlight fault points.
If the cable core is disconnected and the cable and wire sheathing (outer covering) is intact, the bridge distance test cannot be performed using the bridge method. Furthermore, the step voltage method cannot be used to determine the fault point. Many cables have broken sheaths. Even if the cable is directly embedded in a ground fault, the step voltage method cannot be used to determine the fault point.
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