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Those Unknown Cable Connector Security Risks

Views: 13     Author: Site Editor     Publish Time: 2019-11-05      Origin: Site

Wire connectors are a fast-developing accessory in recent years. They are widely used in every country, and the demand is particularly large. At the same time, with the globalization of the market and the birth of AI technology, the wire connector industry is expanding. Since the reform and opening up, domestic wire termination connectors technology has also achieved unprecedented development. China, as the country with the largest consumption of wire harness cable, has huge market potential.


Cable Connector


Although the market for wire cable connectors is becoming larger, it is followed by many safety hazards. For example, the annual electrical fires in buildings throughout the country are mostly caused by aging of wire connectors. Although the reality is very serious, it still fails to attract the attention of most people. This article focuses on the causes of accidents at the joints.



The Cause of Accidents at the Joint

Heat due to Excessive Contact Resistance

In the physical process of connecting the conductive head, when the contact area is smaller than the conductor area, the joint heat is likely to be excessively high, and the surrounding combustibles are incinerated and become a fire accident.


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What are the Reasons for the Excessive Contact Resistance of the Connector?


Poor assembly quality (1) If the connecting wires are not spliced according to strict regulations, the connection of the joints will not be firm and easy to loose, resulting in electric sparks, causing serious fire accidents. (2) Wires and switches, electrical appliances connected through the wire column, due to the sloppy construction, no gasket is added to the terminal, and the nut is not tightened which will increase the contact resistance, causing the conductor to melt, and the molten beads will fall on the items, causing fire accidents. (3) Copper and aluminum wires are not connected according to the prescribed implementation method, there are safety hazards. (4) The core of the wire is not twisted, and some of the filaments (core) are turned out. After each collision, a short circuit is formed, causing a fire accident. (5) The joint of phase lines is not staggered, the wire joint is broken between the joints, and the electric spark is generated which is easy to cause a fire accident. The joint is loosened for a long time. The joint of the loose conductor is oxidized and dust is generated.


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