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What are the common causes of high voltage power cable accidents?

author:kingsignal time:2017/07/17

Once the fire, the fire ferocious, spread quickly, in the burning will occur when a lot of harmful gases, resulting in difficulties in fighting. After the cable is burnt, the repair time is long and the loss is serious. Therefore, it is necessary to pay great attention to prevent the cable fire accident. What causes the high voltage power cable accident? The following brief analysis.

 

1.The site conditions are relatively poor, cables and connectors in the factory manufacturing environment and process requirements are high, and the construction site temperature, humidity, dust are not good control.

 

2.The installation did not strictly in accordance with the construction process or process does not take into account the possible problems. Completion acceptance using DC voltage test results in the formation of anti-electric field within the connector caused by insulation damage.

 

3.Due to poor handling caused by sealing. The middle connector must be made of metal copper shell plus PE or PVC insulation coating of the sealed structure, in the field construction to ensure that the seal of the dense, so that the joint to ensure the sealing waterproof performance.

 

4.The power cable construction process in the insulation surface will inevitably leave a small slip marks, semi-conductive particles and sand on the sand may also be embedded in the insulation, the other joint construction process due to insulation exposed to the air, the insulation will be inhaled Water, which give long-term safe operation left hidden trouble.

 

5.The power cable material itself and cable manufacturing, laying, terminal production and other processes in the inevitable defects, by the operation of the electric, chemical, environmental and other factors, the insulation of the cable will occur in varying degrees of aging, and this aging Will lead to cable failure.

 

The above is a brief introduction to the common causes of high voltage power cable accidents, learn more about power cable content, please pay attention to kingsignal official website.

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