(a) * * * Similarity:
1) has reliable safety performance. Alloy power cable has obtained the most authoritative UL certification in the United States and even the world, and has been successfully applied in the United States, Canada and Mexico for 40 years without any safety problems. Huixin alloy power cable is independently developed on the basis of introducing advanced technology from the United States, and has many patents. It has passed the inspection of many authoritative organizations such as the National Wire and Cable Quality Supervision and Inspection Center, and has the same reliable quality and safety performance as copper cable.
2) Good electrical conductivity. As a conductor, the conductivity of pure aluminum is 6 1.8%IACS. Pure aluminum cable has poor flexibility, creep resistance and oxidation resistance, and it is easy to break and deform at high temperature after being electrified. Therefore, problems often occurred in the use of pure aluminum cables in the past. In order to solve these problems, we independently developed a new alloy conductor by repeated experiments and introducing American technology, that is, adding copper, iron, rare earth and other elements on the basis of pure aluminum; Through advanced technologies such as special process synthesis and annealing treatment, the shortcomings of pure aluminum cables are fundamentally changed, and the electrical conductivity, bending performance, creep resistance and corrosion resistance of cables are greatly improved, ensuring the connection stability of cables when they are overloaded and overheated for a long time. Special emphasis is placed on rare earth elements, which is a special material that can turn decay into magic, and has been widely used in mobile phone screens, space shuttles, alloy technology and so on. Adding rare earth elements into alloy conductors can refine the crystal structure, improve the room temperature effect and high temperature mechanical properties of aluminum, and solve the problems of electrochemical corrosion. Therefore, the strategic role of rare earth elements in China has risen to the same height as oil.
After processing, the electrical conductivity of the alloy cable reaches 62%IACS. In order to achieve the electrical conductivity of alloy material with the same length as copper conductor, the cross section of alloy conductor can be increased to be 1.28- 1.5 times larger than copper.
After increasing the cross-section of the conductor, we adopted two technical measures to solve the problem of different cross-section areas of the two conductors:
1) silane crosslinked polyethylene replaces PVC, and the thickness of silane crosslinked polyethylene insulation material is 2/3 of that of PVC.
2) Using special-shaped extrusion technology and equipment, aluminum cores are extruded into a shape that can be better combined, so that each battery cell is in closer contact and the gap between batteries is smaller. Finally, the diameter of alloy cable is only thicker than that of copper cable 1 1%- 16%. In addition, Huixin alloy power cable adopts special technology, which greatly reduces the creep of conductor under long-term overheating and overvoltage, and makes the electrical connection of Huixin alloy cable as stable as copper cable.
(2) Advantages
Advantages: Daming Shooter aluminum cable has better corrosion resistance than copper cable. Corrosion can be divided into chemical corrosion and electrochemical corrosion. Alloy conductor will quickly form a dense oxide film in air, which can prevent metal from further oxidation and corrosion. Copper, on the other hand, cannot form an oxide film, so pollutants will further corrode the inside. The addition of rare earth elements further improves the electrochemical corrosion resistance of Huixin alloy cable. In addition, Huixin alloy cable adopts more environmentally friendly flame-retardant silane crosslinked polyethylene insulator, which changes the common PVC insulator material of copper cable, so that the resistance temperature of cable insulator is increased from 70 to 90, and the flame retardant grade reaches FT4 grade of UL standard in the United States, and the domestic flame retardant grade is A grade. At the same time, this material is quite corrosion-resistant, sun-resistant, anti-aging and can be bent at will. Therefore, the service life of Huixin alloy cable is longer than that of copper cable 10 year.
Advantages 2 Daming Shooter aluminum cable has better mechanical properties than copper cable. The elongation of hard pure aluminum is 0.5%-2.0%. After annealing, the elongation of Wheeler alloy cable is increased by 30%, and that of copper cable is generally 25%. Therefore, Wheeler alloy cable is softer than traditional copper cable. The tensile strength required for installation and use is much smaller than that of copper cable. The minimum bending radius of Huier alloy cable is 7 times of the cable outer diameter, which is far better than the standard of 10-20 times of the cable outer diameter stipulated by the national standard. Therefore, the Huier alloy cable is easier to bend in the installation process, which effectively reduces the installation cost and accident risk. Huier alloy cable has 40% lower resilience than copper cable and no memory effect, so it is more suitable for installation and use than copper cable.
Advantages: The aluminum cable has more economical performance than the copper cable. On the premise of achieving the same electrical performance as copper cable, the direct purchase cost of Huier alloy power cable is lower than that of copper cable, which is more economical. Because Wheeler alloy power cable is lighter and has better bending performance than copper cable, if copper cable needs to be installed through pipe, Wheeler alloy power cable can be installed only by hanger. Therefore, the transportation and installation cost of Wheeler alloy cable can be reduced by 40% compared with copper cable. The use of Huixin alloy power cable will have an inestimable impact on building a conservation-oriented society.
(3) Defects
Due to the high requirements of alloy cables for terminals, the terminal price is obviously higher than that of ordinary terminals. But this is still a small part compared with the overall price of cable TV. At the same time, the terminal is the most sensitive part of the whole system. Therefore, a little more investment can bring a few years of safe operation.
Secondly, because the production process and technical requirements of Daming Cable are more complicated than that of copper cable, and the market supply is mainly sales, the delivery time needs to be extended by about half a month after the customer orders and signs the contract.
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