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–CCTV Tester
The method of judging whether the cable identification instrument is charged In the introduction of the previous article, the editor has generally described what the cable identification instrument is, its main functions, advantages and uses. Today, I will introduce the cable identification instrument how you can judge whether its cable is live or not. In the previous article introduction, the editor has generally described what the cable identification instrument is, its main functions, advantages and uses. . Today, I will introduce how you can judge whether the cable is live or not.
1. If the cable is not running, but if this cable is in parallel with other running cables, an induced current will be generated, and the induced current will also generate a magnetic field. At this time, the meter will also have an indication. misjudgment occurs. 2. If the running cable has voltage and no load, there is no current flowing on the cable, and the magnetic field cannot be detected at this time, and it is thought that it is a non-energized cable, which is very prone to misjudgment. 3. If there are multiple cables in the cable trench, these multiple cables will generate a magnetic field. At this time, the entire area will generate a magnetic field generated by the current. At this time, there will be a magnetic field in the entire area, making the judgment impossible.
Misjudgment is easy to occur. The result of misjudgment is very serious, and serious casualties will be caused. Therefore, you must clearly and seriously judge whether the cable of the cable identification instrument will be charged to protect your personal safety.
If you need a cable identification instrument, please contact Shenzhen Noyafa Electronic Technology Co., Ltd.! .
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