在线观看国产又色又爽又黄的视频_欧美专区日韩视频人_99re3在线视频播放精品_69zxx少妇内射无码_亚洲中文字幕永远在线_看试国产更新综合_国产真人一级a毛一级a看免费视频_heyzo爆乳无码大全在线播放_国产熟女一区二区三区灬_久久er20热在这里只有精品

After long-term use of the power cord, various failures may occur. Shangyu Jintao Electronics Co., Ltd. sorted out the following reasons for everyone based on the long-term actual situation.

　　 One, it's external damage

　　 In many accidents, power cord failures are caused by external forces. At present, many places are doing large-scale civil construction. If the construction does not consider the power cord buried in the construction land, it will be damaged by the machine during the construction. If the excavator is digging the soil, the power cord will be cut off without proper operation. In addition, improper operation during installation will also cause power cord failure.

　　 2. The insulation is damp

　　 It is also very common that the insulation is damp and the power cord fails. As time progresses, the inner and outer sheaths of the power cord will age, especially in harsh environments, the probability of insulation being damp is very high. For example, a power cord buried in the ground for a long time will be corroded by the soil, causing various failures.

　　 Three, chemical corrosion

　　 With the destruction of the environment, today’s rainwater is sour. Various chemical corrosion will appear on the power cord after long-term exposure to sunlight and rain. Of course, it is not ruled out that the environment in which the power cord is used is acid-base, which will cause corrosion of the armor, lead skin or outer protective layer, and the power cord will lose its original function.

　　 4. Long-term heavy operation

　　 The long-term overweight operation of the power cord is also very harmful to it. Excessive carrying can easily cause the power cord to heat up and cause various failures of the power cord.

　　 The above four types are more common power cord failures. People can maintain the power cord reasonably according to the causes of these failures to keep it working normally.

Article from: http://www.elejintao.com/newsd-nid-41.html