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
Mine cable fault detector cable fault tester on-site testing precautions Mine cable fault detector fault test safety issues are divided into tester safety and equipment safety. The safety of testers should pay attention to the grounding and discharge of the instrument, and equipment safety is mainly the correct wiring , in addition to operating according to the instructions, pay attention to understand the following points: 1)“one point ground”and“Multi-point separation and grounding”: When the flash tester is tested by the high-voltage flash-flash method, it is necessary to ground the ultra-high voltage circuit several times, that is, the grounding end of the high-voltage test transformer and the capacitor has been connected to the cable armor (the armor must be grounded), and the shortest wire diameter should be directly armored. , Do not connect too long, this is not a child's play is to ensure the formality of the test waveform, easy to identify and analyze. For the operation box, flash tester and other instruments that we need to operate directly, why not use the grounding wire to ground the guard ground wire, and do not always cooperate with the spring ground wire, so that we can underwrite the super If the high-voltage grounding wire is never properly grounded, the safety of the operator. 2) The subject of unpredictable discharge *electricity: During the test of the dash-flash method, the most important thing is to replay the high-voltage pulse capacitor and the high-voltage power of the test cable.
Use a dedicated flashlight with resistance to discharge. Direct discharge with a grounding insulating rod, the collision current is too large, which will affect the service life of the ultra-high voltage pulse capacitor. 3) DC power supply: Use a flash tester with DC power supply effect, and try to use DC power supply for spring voltage test when testing, so as to prevent the shock current from being suppressed by the AC power line.
Cable fault tester field test precautions Mine cable fault detector Shenzhen Noyafa Electronic Technology Co., Ltd.
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