Automatic Wire Stripping and Crimping Machine - KINGSING

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Detect and judge the cause of wiring harness circuit failure

2022-12-15 13:33:03 美工

1. The wiring harness is burnt out. The burnt out of the wiring harness occurs suddenly, and the burning speed is very fast. Generally, there is no safety device installed in the burned out wire.

2. Poor contact. Poor line contact faults mostly occur in the connector. When a fault occurs, it will cause the electrical equipment not to work normally. When judging, the power of the electrical equipment should be turned on, and the relevant connector of the electrical equipment should be touched or pulled. When a certain connector is touched, the electrical equipment works abnormally, indicating that the connector is faulty.


3. Open circuit of electric wire. In addition to obvious breakage, the common cause of wire breakage is between the wire and the terminal of the wire. Some wires have been disconnected, the outer insulation and the terminal of the wire are intact, but the inner core and terminal of the wire have been disconnected. In judgment, a tension test can be made on the conductor and the terminal of the conductor suspected of breaking. During the tension test, it can be confirmed that the conductor is open when the insulation of the conductor becomes thinner gradually.

4. Short circuit of electric wire. External crushing and impact of electric wire harness causes damage to the wire insulation in the wire harness, resulting in short circuit between wires, causing some electrical equipment to run out of control and fuses to fuse. In judgment, the wiring harness connectors at both ends of the electrical equipment and the control switch can be detached and the short circuit of the wiring can be detected with a meter or test lamp.