Cable identification instrument working principle and use steps

Cable identification instrument working principle:

The high-power special signal transmitted by the transmitter HZ-201BF enters the selected cable, and the receiving clamp HZ-201BJ is clamped in the selected direction (the direction in which the caliper has a red marked face toward the instrument current) is selected On the cable, the direction of the sensed current pulse is indicated by the header HZ-201BZ pointer and the amplitude reflected is larger. For other nearby cables due to inductive or capacitive coupling, or due to the return current flowing through the shield, the meter pointer will swing in the opposite direction and it will be seen that its strength is weaker than the correct cable current.

Cable identifier use steps:

1. Make the cable under test uncharged, and find out the beginning and end of the cable;

2. Disconnect the ground wire (shielded wire) of the tested cable from the system ground wire;

3. The generator signal output terminal “-” is connected to the common ground, and the “+” output terminal is connected to the fault-free cable core in the cable under test, and the core terminal is grounded; the wiring method.