Detection and judgment of wiring harness fault

Detection and judgment of wiring harness burn out fault:

Wiring harness burnt out, all happen suddenly, and the burning speed is very fast, burnt out line, there is generally no insurance device. The law of wire harness burning is: in the circuit of the power system, which point to take the iron, the wire harness burned to where, the burnt and intact parts of the junction, can be considered this is the wire to take the iron; If the wiring harness burns out to the wiring position of an electrical equipment, it indicates that the electrical equipment is faulty.

Detection and judgment of short circuit, open circuit and bad contact fault between lines. The insulation layer of the wires in the wiring harness is damaged when the wiring harness is squeezed or impacted, resulting in a short circuit between the wires, causing some electrical equipment to go out of control and fuse to be blown.

When judging, you can disassemble the wiring harness connector at both ends of the electrical equipment and the control switch, and detect the short circuit of the line with an electric meter or a test lamp.

In addition to the obvious fracture phenomenon, the common fault occurs between the wire and the wire terminal. After some wires are disconnected, the outer insulation layer and the wire terminal are intact, but the inner core wire and the wire terminal are disconnected. When judging, you can do tension test on the conductive wire and the wire terminal suspected of breaking. In the tension test process, if the insulation layer of the wire gradually becomes thinner, you can confirm that the wire has been short-circuited.