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Recently, Wang Zhiqiang, senior engineer of the Ninth Design and Research Institute of China Shipbuilding Industry, said at a seminar held by the Development Research Center of the State Council: "In the occasions with high requirements for reliability and safety, copper cables must be used, not aluminum cables
.
"Due to the different coefficients of thermal expansion of copper and aluminum metals, aluminum cable joints are prone to fire - the probability of fire is about 10 times that of copper cables, so aluminum cables can only be used
in areas with high construction management levels such as North America.
Wang Houyu, a well-known industrial and civil building electrical technology expert, revealed that in the past, when copper resources were tight, only important departments used copper cables
.
At the same time, the use of aluminum instead of copper was written into the electrical code, resulting in frequent electrical fires
.
Since the reform and opening up, China's power cable industry has gradually restored the reasonable structure of "copper-based", and the proportion of the aluminum cable market has decreased from 40% to about
10%.
However, in recent years, due to the exaggerated publicity of aluminum and aluminum alloy cables by individual aluminum alloy cable manufacturers and the media, the chaos in the industry has become prominent, and even the misleading slogan
of "replacing copper with aluminum" has appeared.
In addition, in the case of overcapacity in China's cable industry, blindly promoting aluminum cables to replace copper cables is bound to cause a large number of copper cable equipment to be idle, the original investment is wasted, and the output value of the entire industry has shrunk
significantly.
Therefore, the participating experts believe that there are many chaos in China's power cable industry aluminum cable instead of copper cable, which is seriously misleading to the market order, and it is urgent to make rational evaluation and judgment from the aspects of technology, safety and economy, and give full play to the decisive role
played by the market in the allocation of copper and aluminum resources in the field of power cables.
Recently, Wang Zhiqiang, senior engineer of the Ninth Design and Research Institute of China Shipbuilding Industry, said at a seminar held by the Development Research Center of the State Council: "In the occasions with high requirements for reliability and safety, copper cables must be used, not aluminum cables
.
"Due to the different coefficients of thermal expansion of copper and aluminum metals, aluminum cable joints are prone to fire - the probability of fire is about 10 times that of copper cables, so aluminum cables can only be used
in areas with high construction management levels such as North America.
Wang Houyu, a well-known industrial and civil building electrical technology expert, revealed that in the past, when copper resources were tight, only important departments used copper cables
.
At the same time, the use of aluminum instead of copper was written into the electrical code, resulting in frequent electrical fires
.
Since the reform and opening up, China's power cable industry has gradually restored the reasonable structure of "copper-based", and the proportion of the aluminum cable market has decreased from 40% to about
10%.
However, in recent years, due to the exaggerated publicity of aluminum and aluminum alloy cables by individual aluminum alloy cable manufacturers and the media, the chaos in the industry has become prominent, and even the misleading slogan
of "replacing copper with aluminum" has appeared.
In addition, in the case of overcapacity in China's cable industry, blindly promoting aluminum cables to replace copper cables is bound to cause a large number of copper cable equipment to be idle, the original investment is wasted, and the output value of the entire industry has shrunk
significantly.
Therefore, the participating experts believe that there are many chaos in China's power cable industry aluminum cable instead of copper cable, which is seriously misleading to the market order, and it is urgent to make rational evaluation and judgment from the aspects of technology, safety and economy, and give full play to the decisive role
played by the market in the allocation of copper and aluminum resources in the field of power cables.
