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–POE Tester
The introduction and precautions of the direct connection method of the comprehensive cable fault tester The direct connection method of the cable fault tester manufacturer is to connect the output line of the transmitter directly to the metal pipeline, and the current emitted by the transmitter passes through the pipeline and flows into the earth at its grounding point, or Introduction and precautions of the direct connection method of the comprehensive tester for faults through pipelines and large cables It flows into the ground, or flows into the ground through the distributed capacitance between the pipeline and the ground, and finally returns to the transmitter. The current on the pipeline generates electromagnetic field radiation, and the receiver receives the magnetic field for pipeline detection. The manufacturer of the cable fault tester connects the red alligator clip of the transmitter directly connected to the output line to the cable to be tested, and the black alligator clip to the grounding solder that is driven into the earth (soil). If the grounding wire is not long enough, use an extension wire to continue the connection. .
Note: 1. Selection of grounding brazing position: In order to ensure the detection effect, the grounding brazing should be more than 5m away from the pipeline, and the black grounding wire should be as perpendicular to the pipeline direction as possible. 2. Do not connect the ground clip to the water pipe or other pipelines, otherwise, there will be transmitted signals on these pipelines, which will interfere with the normal detection of the target pipeline. There should be no other lines between the ground wire and the target line, otherwise the transmitted signal will also be sensed on these lines, causing interference.
Ensure a good connection: If there is insulating paint or rust at the connection of the pipeline, you need to clean it first and make sure that the red alligator clip is directly connected to the metal part of the pipeline. When the line to be tested has multiple parallel contacts, the annunciator must be placed at one end of the bus, not somewhere in the middle. Shenzhen Noyafa is a source enterprise specializing in the production of electric power testing equipment. It is a manufacturer of insulation resistance testers, a complete set of variable frequency series resonance test devices, and a cable fault tester. The company has won the market and customers with good credit and high-quality products. Unanimously praised.
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