NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
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NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
Author: Noyafa–Cable Tester Manufacturer
What should be paid attention to in the use of common cable fault testers In order to improve the efficiency of cable fault detection and reduce the cost of benefits, most cable repairers will choose to use cable fault detectors to assist in the detection, so as to quickly locate faults for common cable faults What should be paid attention to in the use of the tester? In order to improve the efficiency of cable fault detection and reduce the cost of benefits, most cable repairers will choose to use the cable fault detector to assist in the detection, so as to quickly locate the fault point and speed up the cable repair efficiency. So what details need to be paid attention to in the use of the cable fault detector. A strict check on this is a level of detail of a specific requirement in the form of value embodiment that is very optimistic.
Then, when the cable fault tester adopts the pulse method to detect, it should be noted that all other detection equipments are short, and the measurement is performed on the outermost line. When using the reflected arc pulse test for the faulty cable, the trigger mode switch of the cable fault detection equipment must be placed in the flashover position. When using the direct flash-off test or the flash test, the detection equipment must be connected to the ground wire to avoid personal and equipment safety. cause some damages. After the flashover test, be sure to cut off the power supply, remove the connection between the instrument and the high-voltage test device, and discharge the stored power of the high-voltage capacitor and cable.
When discharging, a resistor R should be applied to limit the discharge current. After the voltage on the capacitor is reduced, the resistance in the grounding discharge circuit is zero. Because the instantaneous current of the capacitor discharge can reach several hundred amperes, it must be operated according to strict procedures to avoid damage to the equipment. In the process of using the direct flash method, the leakage current of the faulty cable must be closely detected. If the current suddenly increases and the fault flashover does not appear, the experimental voltage should be immediately reduced and the flashing test should be used instead. Then after the overall inspection is completed, the entire cable needs to be discharged to deal with it, because in general, in terms of the use of common cable faults, the most common is to judge as a gift based on the usual use situation, this is very optimistic about the main Use detailed.
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