HSSB-I Cable Identification Device

1HSSB-I Cable Identification DeviceIntroduction to Working Principle

　In order to reliably and accurately identify cables, a special signal needs to be added to the identified cable, which needs to be received by the receiver. By using this characteristic, the cable to be found can be identified.

The instrument works according to the following principle:

The generator feeds periodic unipolar voltage pulses into the cable to be identified, which needs to be grounded remotely to ensure sufficient current flows through the cable. The system should be designed so that the return current does not come back from the same cable. To achieve this, the direction of the pulse current fed into the cable can be used as a clear identification standard, and the current flowing out only passes through this cable. All other adjacent cables are the return current, but their polarities are opposite. In addition to the actual difference in current direction, current amplitude is also a recognition feature. The outgoing current only passes through one cable, while the return current can pass through several cables, which means that the outgoing current is greater than the return current flowing through other cables.

The task of the receiver is to detect the direction and magnitude of the current flowing through the cable. To achieve this goal, a current clamp is used as a sensor with an amplifier connected in series in the circuit. The clamp holds the tested cable, and the magnetic field generated by the current flowing through the cable induces a voltage in the clamp coil. The polarity of the voltage is determined by the direction of the current and the direction of the clamp coil. In order to obtain voltage polarity with clear current direction, all cables in a bundle are tested with the same correct winding direction, which is why the calipers are marked with arrows. The direction of the arrow on the caliper should point towards the far end of the cable, and the voltage induced in the caliper coil is displayed in the meter head. If the caliper is connected in the above way, the direction of the pointer swing can display the direction of the current, that is, only the cable with the current flowing out has a pointer that is biased to the right, which is the cable to be found. All other cables only flow return current, with the pointer biased to the left or no pulsating current, and the pointer does not deflect. The amplifier regulator on the receiver can adjust the signal strength.

• HSSB-I Cable Identification Devicefunction

The functions of each part of the recognition device host are as follows:

1.Power switch: controls the power on/off of the entire machine.

2.Power input socket: Use the power cord provided with the instrument to input50HZ、220VAC power supply. When using the instrument, a three hole power socket should be used independently, and the socket grounding wire should be directly grounded nearby.

3.Safe Seat: Instrument Use10AWhen the fuse is damaged, it should be replaced with a fuse of the same specification.

4.Black terminal: During testing, use the matching black test wire (Ø)4Insert the plug into this socket and test the other end by connecting it to the system ground.

5.Red terminal: During testing, use the matching red test wire (Ø)4Insert the plug into this socket and test clamp the tested cable core at the other end.

6.Header: Indicates the magnitude of the output current.

The functions of each part of the receiver are as follows:

• Power switch: Connect and disconnect the power supply of the receiver.
• Amplitude adjustment: Clockwise rotation increases the receiver meter reading, counterclockwise rotation decreases the reading.
• Header: Indicates the amplitude and polarity of the input signal.
• Power indicator light: When the power switch is turned on, the indicator light is on.
• Polarity indicator light: When the same cable is correctly identified, the indicator light will turn on.