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Company: Henan Lubao Special Cable Co., Ltd.

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Address: No. 13 Workshop B, Tiantan Venture Park, Huling Industrial Gathering District, Jiyuan City, Henan Province


Analysis of the Causes of the Degradation of Cable Insulation Performance

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Analysis of the Causes of the Degradation of Cable Insulation Performance

作者: Release Date: 2019-10-18 Author: Click:

Analysis of the Causes of the Degradation of Cable Insulation Performance


Wires and cables have a wide range of applications. Due to improper operation or interference from external factors during use, it is easy to cause problems with wires and cables. This requires us to solve them in a timely manner. The most direct cause of wire and cable failure is reduced insulation and breakdown. So what are the reasons that cause the insulation of wires and cables to decrease? The following Great Wall Cables explain the main reasons:


1. Overload operation. Long-term overload operation will increase the temperature of the cable and age the insulation, causing breakdown of the insulation and reducing the construction quality.


2.Electrical aspects: the cable head construction process fails to meet the requirements, the cable head is poorly sealed, moisture invades the inside of the cable, and the cable insulation performance decreases; protection measures are not taken when laying the cable, the protective layer is damaged, and the insulation is reduced.


3.Civil engineering includes: poor drainage of industrial trenches, long-term soaking of water in the cable, damage to the insulation strength; too small diameter of the industrial well, insufficient cable bending radius, and long-term damage by crushing external forces. Mainly mechanical construction in municipal construction, Cut the cable and cut it. Henan Wire and Cable


4.Corrosion: The protective layer has suffered chemical corrosion or cable corrosion for a long time, which causes the protective layer to fail and the insulation to be reduced.


5, the cable itself or the cable head accessories are of poor quality, the cable head is poorly sealed, the insulating glue is dissolved and cracked, which leads to the resonance phenomenon of the station.

河南电线电缆

How to identify inferior wires and cables


Fake and inferior non-standard cable products flood the market. How to identify them is a concern of users. The following points are for reference. Wire and cable manufacturers introduce to you:


1 The price of cable products is more than 20% lower than the normal market price.


2 There is no standard factory name, production license number or 3C certification number and mark on the surface of the cable.


3 There are no corresponding markings on the surface of the cable, such as flame retardant and fire signs.


4 The printing on the surface of the cable is blurry or even wrong. Henan wire and cable


5 The color of the cable insulation or sheath is incorrect, and it does not meet the requirements of the specified color code.


6The length error of the cable seriously exceeds the range specified by the standard. Henan wire and cable


7 The conductor is black, rusted, oily, twisted, loosely twisted, and the pitch is too large.


8 The sheath is severely uneven, and it will break when pulled, with holes, cracks, etc.

URL of this article: http://herzheart.com/南方双彩网/519.html

Keywords: Zhengzhou wire and cable , Henan wire and cable , wire and cable manufacturer

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