1) Detection and judgment of wire harness burnout fault
In the circuit of the power supply system, where the iron is built, the wire harness will be burned, and the junction between the burned and intact parts can be considered as the wire tie at the place; If the wire harness burns to the wiring part of an electrical equipment, it indicates that the electrical equipment is faulty.
2) Detection and judgment of short circuit, open circuit and poor contact fault between lines
-The wire harness is squeezed and impacted externally, causing damage to the wire insulation layer inside the wire harness, resulting in a short circuit between the wires.
When judging, the wire harness connectors at both ends of the electrical equipment and the control switch can be disassembled, and the short circuit of the line can be detected with an electricity meter or test lamp.
-Wire break fault, in addition to obvious fracture phenomenon, common faults mostly occur between the wire and the wire terminal. After some wires are broken, the outer insulation layer and wire terminals are intact, but the inner core and wire terminals of the wire have been disconnected. When judging, a tensile test can be performed on the conductive wire and the wire terminal that is suspected of being broken, and during the tensile test, if the wire insulation layer gradually thins, it can be confirmed that the wire has been broken.
-The line contact is poor, and the fault mostly occurs in the plug-in. When a fault occurs, it will cause the electrical equipment to not work properly. When judging, turn on the power supply of the electrical equipment, touch or pull the relevant plug-in of the electrical equipment, when touching a plug-in, the electrical equipment works suddenly normally, suddenly abnormal, indicating that the plug-in is faulty.
