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On Anti-freezing Technique Of Wire And Cable
Mar 29, 2018

 The surface is easily covered with snow and ice because the wires and cables are overhead outdoors. When the ice weight exceeds the capacity of the wire and cable, it is easy to cause the cable to pull the transmission tower, or to pull the telegraph pole, and the cable itself broken.


So, to avoid this, there are two ways to mitigate: 1, first of all, in the selection of materials to be careful to choose to withstand the cold cable. As the ice and snow fell on the line and the gap between the cables, the cable center of gravity easily biased to the part of the snow, resulting in a force, so that the cable rotation, snowball will roll bigger, eventually broken. Therefore, cable rotation is the leading cause of icing. And if the cable is a hard conductor, when the snow accumulates enough, it is not easy to produce a twist, the snow will automatically fall off the wire. At the same time, because the cable hard density is different, when the snow gradually solidified to the ice, to a certain extent will automatically fragmentation. As a result, some manufacturers have developed a new type of high-voltage overhead cable, which is known to aero-z new high-voltage overhead conductors.


The world's coldest countries, Iceland and Ceskoslovensko, use this aero-z wire. 2, second, on the wire and cable coated with antifreeze paint. The so-called antifreeze coating, in fact, is a high-temperature thermal insulation coating or reflective heat insulation coating. Designed to achieve antifreeze through insulation.

 

  In addition, the general also has waterproof, anti-corrosion, moisture-proof, crack prevention, fire, insulation and other functions. Antifreeze coatings on the market vary according to the ability of each enterprise to develop.

Therefore, in the purchase of the time need to be more contrast and testing.


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