NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
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NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
Author: Noyafa–Cable Tester Manufacturer
Question: What are the causes of cable failures? Answer: With the rapid development of my country's economy, the demand for electricity is also increasing. In order to ensure the safety of electricity use, power companies usually use underground methods to lay cables. But the cable has been running for a long time for a long time: what are the reasons for the cable failure? Answer: With the rapid development of my country's economy, the demand for electricity is also increasing.
In order to ensure the safety of electricity use, power companies usually use underground methods to lay cables. However, in the long-term operation of the cable, it will be affected by itself or other factors, so that the cable will fail during operation, resulting in power outages in some power networks. So what are the factors that cause the cable to fail in operation? When laying cables, due to the relatively low quality of some electric power construction personnel, they rarely understand the knowledge of laying cables. Some construction personnel often do not install key nodes carefully or do not follow the operating procedures, which causes the internal or external insulation of the cable because of This phenomenon is a key factor leading to cable damage.
Although only the cable skin is damaged, in the long-term high temperature operation of the cable, it will cause a short circuit, and even cause a series of other failures, resulting in cable failures. Therefore, when laying cables, cable construction personnel should be trained in advance, and they should be carefully operated, so as to ensure that the cable laying conditions meet the specified requirements. In the long-term application of the cable, the insulation performance of the cable will decrease, and there are various reasons for the aging of the cable insulation.
For example, the gas inside the cable will be freed when it is energized, and the internal medium of the cable after electrolysis will form ozone, and the ozone will corrode the outer insulation of the cable, which will also lead to the aging of the cable. In order to reduce the input cost, some power companies usually lay many cables in a cable trench. However, this method will reduce the amount of air in the cable trench, and many cables working together will generate a lot of heat, and then Increase the temperature in the trench, and the aging of the cable will form when the cable insulation cannot withstand the temperature. Especially in summer, the temperature is high, and the cable breaks down the cable joint due to the overload operation temperature is too high.
Some companies that produce cables are difficult to produce high-quality cables due to the influence of technology or capital, and some of them do not meet the standards. Such low-quality cables will lead to a series of failures after long-term use. For this reason, the selection of quality cables can greatly reduce the probability of failure. The above are some of the main factors that cause the cable to fail during operation. In order to ensure the service life of the cable, it is necessary to choose high-quality cables and lay the cables according to relevant requirements.
Shenzhen Noyafa Electronic Technology Co., Ltd. is a wholly-owned subsidiary invested and established by Noyafa (stock code: 831548), a company listed on the New Third Board. R&D, production and sales of cable fault tester, multiple pulse cable fault tester, cable safety test device, cable identification instrument, cable fault precise location instrument, high-voltage cable outer sheath fault tester, high-voltage bridge fault tester Instrument, light high voltage signal power supply and other high and low voltage power test equipment. On the basis of strong technical force, the company optimizes reforms and brings forth new ideas, so as to continuously improve product quality and production technology.
The products have the characteristics of professional quality, precision and intelligence, stability and efficiency, lightness and portability, simple operation, safety and durability. Over the years, the excellent product performance has brought significant economic benefits to users and won the trust and praise of customers.
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