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 Suppliers
The wiring method of the cable identification instrument instruction manual: direct method and coupling method: The cable identification instrument wiring method is divided into two types: direct connection method and coupling method. The direct connection method is only suitable for the identification of uncharged cables. can be accurately identified. A) Direct connection method: The ground wire of the cable to be identified is disconnected, the signal current output wire (red) is connected to any good phase, and the other end of the connected phase is connected to the ground. The signal current return line (black) is connected to the ground.
Identification method: First determine the phase, take the initial swing of the meter pointer as the criterion, and let the current flow in the direction indicated by the receiving clamp according to the direction shown in the figure. If it is the cable to be identified, the initial swing direction of the meter pointer should be to the right. In the phase judgment process, if there are multiple cables in the same phase, you can compare the amplitude, adjust the sensitivity knob to the appropriate position, and compare the amplitude. The cable with the largest amplitude is the cable to be identified.
B) Coupling method: Connect both ends of the cable to be identified to the ground (through core wire, shield or armor) to form a closed loop. When the direction of the output coupling clamp is the same as the direction of the receiving coupling clamp, the cable with the positive direction of the pointer of the meter head is the cable to be identified. Identification method: Under the condition that the output coupling clamp and the receiving coupling clamp are in the same direction, first determine the phase, take the initial swing of the meter pointer as the criterion, and let the current flow in the direction indicated by the receiving clamp according to the direction shown in the figure.
If it is the cable to be identified, the initial swing direction of the meter pointer should be to the right. In the phase judgment process of the cable identification instrument, if there are multiple cables in the same phase, the amplitude can be compared, and the sensitivity knob can be adjusted to the appropriate position to compare the amplitude. The cable with the largest amplitude is the cable to be identified.
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