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
Cable identification instrument should pay attention to those matters when using cable identification instrument Insert the red and black wiring plugs of the transmitting caliper A into the two red and black binding posts corresponding to the transmitting source, and clamp the transmitting caliper A on the identified cable. The arrow on the launch caliper A points to what should be paid attention to when using the cable identifier. For the cable identifier, insert the red and black wiring plugs of the launch caliper A into the two red and black terminals corresponding to the launch source, and connect the launch caliper A stuck on the identified cable. The arrow on launch caliper A points to the cable terminal.
On the identified cable two meters away from the transmitting caliper, clamp the receiving caliper B on the cable, and the arrow on the caliper must point to the cable terminal. Then check the current direction and test connection direction. At the identification point, use the receiving caliper B to identify each cable.
When identifying, make sure that the arrow on the receiving caliper always points to the terminal direction of the cable, and test each cable one by one. On the identified cable, the pointer of the ammeter head of the receiver must be deflected to the right, and the sound and light alarm prompts. Notes on the use of the cable identification instrument: 1. If the running cable has voltage and no load, there is no current flowing through the cable, and the magnetic field cannot be detected at this time.
2. 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. 3. If there are multiple cables in the cable trench, these multiple cables will generate a magnetic field. At this time, there will be a magnetic field generated by a 50HZ current in the entire area. At this time, there will be a magnetic field in the entire area, making the judgment impossible. Misjudgment is easy to occur.
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