There are copper core cables and new aluminum alloy aluminum core cables, the following small series to introduce the difference between the two.

First, the product characteristics of copper cable:

1. Low resistivity: The resistivity of the aluminum cable is about 1.68 times higher than that of the copper cable.

2. Good ductility: the elongation rate of copper alloy is 20~40%, the elongation rate of electrical copper is more than 30%, and the aluminum alloy is only 18%.

3. High strength: the allowable stress at room temperature is 7~28% higher than that of aluminum. Especially the stress at high temperature, the difference between the two is very far.

4. Anti-fatigue: repeated bending of aluminum is easy to crack, copper is not easy. In terms of elasticity index, copper is also about 1.7 to 1.8 times higher than aluminum.

5. Good stability and corrosion resistance: copper core is resistant to oxidation and corrosion, while aluminum core is simply subject to oxidation and corrosion.

6. Large current carrying capacity: due to low resistivity, the copper core cable of the same section is about 30% higher than the current carrying capacity (the maximum current that can pass through) of the aluminum core cable

7. Low voltage loss: due to the low resistivity of the copper cable, the same current flows through the same section. The voltage of the copper cable is small. Therefore, the same transmission distance can ensure higher voltage quality; In other words, under the agreed voltage drop conditions, the copper cable transmission can reach a long distance, that is, the power supply coverage area is large, which is conducive to network planning and reduce the number of power points set.

8. Low heating temperature: under the same current, the heat output of the copper core cable with the same section is much smaller than that of the aluminum core cable, making the operation safer.

9. Low energy consumption: Due to the low resistivity of copper, compared with aluminum cables, the power loss of copper cables is low, which is obvious. This is conducive to improving the efficiency of power generation and protecting the environment.

10. Oxidation resistance, corrosion resistance: the connection head of the copper core cable is stable, and will not cause trouble due to oxidation. The joints of aluminum core cables are often unstable due to the increase of contact resistance and heat caused by oxidation. Therefore, the incident rate is larger than the copper core cable

A lot more.

11. Construction convenience: ① The copper core is flexible, the bend radius is small, so the bend is easy and the pipe is simple; ② Copper core anti-fatigue, repeated bending is not easy to crack, so the wiring is convenient; (3) The mechanical strength of the copper core is high, and it can withstand large mechanical tension, which brings great convenience to the construction and laying, and also invented the conditions for mechanized construction.

Second, the product characteristics of aluminum cable:

1. Cheap price: copper rod is 3.5 times the price of aluminum rod, and the proportion of copper is 3.3 times that of aluminum, so aluminum cable is much cheaper than copper cable, which is suitable for low engineering or temporary electricity.

2. The cable is very light: the weight of the aluminum core cable is 40% of the copper core cable, and the construction and transportation cost is low.

3. Anti-oxidation, corrosion resistance: aluminum reacts with oxygen in the air to quickly generate an oxide film, which can avoid further oxidation, so aluminum wire is the necessary material for high voltage, large cross-section and long span overhead power transmission. Although aluminum core cables are cheap, copper cables have outstanding advantages in cable power supply, especially in the field of underground cable power supply. Underground copper cable power supply has the characteristics of low incident rate, corrosion resistance, high reliability, convenient construction protection and so on. This is also the reason why copper cables are mainly used in underground cable power supply in China.

Qingdao Tianxing Cable Co., Ltd. focus on supporting wire and cable production customization manufacturers, main: exports to more than 40 countries and regions around the world, the annual production capacity of 1 billion yuan. 6000 square meters of storage, standing hundreds of millions of inventory, order demand for rapid distribution and delivery, large prices more favorable. Qingdao cable manufacturer hotline: 16678668098