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  • 線束線路故障的判斷
  • 本站編輯:聚航電子發布日期:2019-05-03 08:46 浏覽次數:

1、線束燒毀。線束燒毀事故一般發生得比較突然,而且線束燃燒起來之後燃燒的速度也比較快,在這些燒毀的線纜中,通常沒有設置保險裝置。在電源系統的線纜中,一旦發生燒毀故障,通常會燒到搭鐵部位為止,所以搭鐵部位即區分線纜損壞和完整的交點。如果線束燒毀一直燒到電器件的接線部位,則證明此電器件已發生故障。

 

2、線束線纜之間發生短路、斷路和接觸不良。線束線纜受到外部碰撞、擠壓容易導緻其絕緣保護層的破損,引起線纜短路故障,使對應的電器件失去控制或者保險絲熔斷等問題。對此進行判斷時,可以将線束兩端的連接電器件或開關的端子或插接器拆掉,用萬用表等專用儀器檢測線纜的故障之處。

 

對于線纜的斷路故障,除了從外觀能直接判斷的斷裂現象外,還經常發生于端子與線纜的接線處,且不容易從外觀上進行判斷。對疑似斷路的線纜,可以通過拉力試驗判斷,如導線絕緣層逐漸變細時,可确認該導線已斷路,或者采用萬用表等專用儀器進行檢測。



1. Wire harness burned out. Wire harness burning accidents usually occur more suddenly, and the burning speed of the wiring harness is faster after burning up. In these burned cables, there is usually no safety device. In the cable of power system, once burning failure occurs, it usually burns to the iron-laying part, so the iron-laying part distinguishes the damaged cable from the complete intersection point. If the wiring harness burns down until it reaches the wiring part of the electrical device, it proves that the electrical device has malfunctioned.
 
2. Short circuit, open circuit and bad contact occur between harness and cable. External collision and extrusion of wire harness and cable can easily lead to damage of insulation protection layer, short circuit fault of cable, loss of control of corresponding electrical components or fuse fuse. When judging this, the terminals or connectors connecting the electrical devices or switches at both ends of the harness can be removed, and the faults of the cables can be detected by special instruments such as multimeters.
 
For the cable breaking fault, in addition to the appearance can directly judge the breaking phenomenon, but also often occurs at the terminal and cable junction, and it is not easy to judge from the appearance. For suspected disconnected cables, it can be judged by tension test, such as when the insulating layer of the conductor becomes thinner, it can be confirmed that the conductor has been disconnected, or it can be detected by special instruments such as multimeter.
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