Author: Noyafa–POE checker
The cable path detector is a test instrument for locating cable faults. The cable fault locator can test high-resistance flashover faults, high- and low-resistance grounding, short circuits and cable disconnection, poor contact and other faults. The cable fault locator is equipped with an acoustic cable path detector, which is a test instrument for locating cable faults. For testing faults such as poor contact, the cable fault locator is equipped with an acoustic measuring method point instrument, which can be used to accurately determine the precise location of the fault point. It is suitable for testing power cables and communication cables of various types and voltage levels. The test principle of the cable fault locator is based on the distance between the transmitted pulse and the reflected pulse. The main principle of the cable fault locator to achieve positioning is the step voltage fixed-point method. For the convenience of explanation, it is recommended to use Wuhan Dingsheng Electric Power Automation Co., Ltd. The DFDL-S buried, underground, overhead cable fault tester, this product conforms to the cable measurement principle, and the test results are true and reliable. The step voltage fixed-point method of the cable fault locator applies a pulsating or pulse signal to the cable under test. If the cable is damaged at the fault point and connected to the ground, there will be a step voltage phenomenon near the fault point, and the voltage directions before and after the fault point are opposite to each other. .
Cable fault locator test principle The power cable fault tester consists of three main parts: the power cable fault tester host, the cable fault locator, and the cable path instrument. The main unit of the cable fault tester is used to measure the fault nature of the cable fault, the total length and the approximate position of the cable fault point from the test end. The cable fault locator is to determine the precise position of the cable fault point on the basis of the cable fault tester host determining the approximate position of the cable fault point.
For buried cables with unknown direction, a path meter is required to determine the underground direction of the cable. The basic method for testing power cable faults is to apply a high-voltage pulse to the faulty power cable to generate a breakdown at the fault point of the cable. When the fault breakdown point of the cable discharges, it generates electromagnetic waves and emits sound at the same time. The above introductions about the underground cable path detector are hoped to be helpful to friends in related industries.
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