Blog

Dedicated to the development of wire harnesses

What are the common faults of industrial wiring harness


Published Time:

2021-11-12

概要: During the operation of industrial electronic wiring harness, there are always some problems due to various reasons. Common problems include poor connector contact, short circuit between wires, open circuit, bonding and so on.

Cause and detection method of industrial wiring harness failure

During the operation of industrial electronic wiring harness, there are always some problems due to various reasons. Common problems include poor connector contact, short circuit between wires, open circuit, bonding and so on.

So what causes problems with industrial wiring harnesses?

1, natural aging or damage. The service time of the wire harness exceeds the service life, the insulation layer of the wire harness begins to crack slowly, and the mechanical strength begins to decline. For a long time, wires and wires short circuit, open circuit, take iron problems will be obvious.

2. Wire harness terminal oxidation. If the wiring harness terminal is completely oxidized, the wiring harness may be deformed, resulting in poor wiring contact or short circuit, which results in a wiring harness fault.

3. Electrical equipment fails. The other is a short circuit caused by the overload of electrical equipment, which then leads to wiring harness problems.

4. Human causes. The latter cause of the problem is improper manual operation, unreasonable position of wiring harness and electrical equipment wiring error, damage of wiring harness components in the repair process.

Detection and judgment of electronic wiring harness fault:

Iron: The rule of electronic wiring harness burn out is that in the circuit of the power system, the electronic wiring harness burn out place and no defect junction can be considered wire is iron; If the electrical wiring harness burns out into the wiring part of the electrical equipment, it indicates a problem with the electrical equipment.

Short circuit: the electrical wiring harness is kneaded and impacted by the outside, resulting in damage to the insulation layer of the electrical wiring harness, resulting in short circuit between the wires and some electrical equipment out of control and the safety wire fuse.

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

Hot News


Research on Reliability of Wire Harness Design

At present, modern science and technology have been effectively improved, and the automotive industry has also developed rapidly, becoming an indispensable part of people's lives. At the same time, the electrical equipment inside the car can connect each electronic component. Wire harness design plays an important role in automotive circuits, otherwise the functional requirements of the car cannot be met, as the improvement of car performance and the continuous application of new functions can meet the different needs of the car. Due to the increasingly complex internal structure of automobiles, the difficulty of installation, maintenance, and wiring of electrical appliances also increases. The weight required for the crossbeam will also increase with the increase of components, thereby reducing the reliability of the vehicle. This article analyzes the system design of automotive wiring harnesses and the selection of relevant raw materials, in order to provide reference for the reliability of automotive wiring harness design.

2023-06-14


Design ideas for low-voltage wiring harnesses in automobiles

For wire harness engineers, the development ability of wire harness cost reduction can directly reflect their business level. The reduction of wire harness cost can directly lead to the growth of company profits. Moreover, wire harness cost reduction often leads to wire harness weight reduction. Therefore, cost reduction design is an ability that can shape the core value of wire harness engineers themselves. This article provides ten ideas for wire harness cost reduction design.

2023-06-14


Why is the terminal resistance of the CAN bus 120 Ω

The terminal resistance of the CAN bus is generally 120 ohms. In fact, when designing, two 60 ohm resistors are connected in series, and there are usually two 120 ohm nodes on the bus. Most people who know a little about the CAN bus know this truth.

2023-06-14