Copper core cable and aluminum core cable have their own advantages and disadvantages, Min's cable analysis for you.

Often people can't tell what are the advantages of aluminum core cables and copper core cables, and where is the scope of application? Min's cable has sorted out the differences between the two and the comparison of their advantages and disadvantages

The difference between aluminum wire and copper wire is as follows:

1. The interception volume of copper wire and aluminum wire is different;

2, aluminum wire is relatively cheap;

3, the weight of aluminum wire is lighter;

4, the mechanical strength of aluminum wire is poor;

5. The aluminum wire is very easy to be oxidized at the end of the connecting wire, and the temperature will rise after the end of the connecting wire is oxidized.

6. The internal resistance of the copper wire is small. The internal resistance of the aluminum wire is larger than that of the copper wire, but the heat dissipation is faster than that of the copper wire. The main reason is that the current carrying capacity is different and the mechanical strength is different. It is about 80 percent of copper. The mechanical strength of copper is also much better.

Comparison of advantages and disadvantages of copper core cable and aluminum cable

1. The resistivity of copper core cables is low: the resistivity of aluminum core cables is about 1.68 times higher than that of copper core cables;

2, the copper core cable has good ductility;

3. The copper core cable has high strength: the allowable stress at room temperature can reach 20 for copper and 15.6kgt\/mm2 for aluminum;

4. The copper core cable is anti-fatigue: aluminum is easy to break after repeated bending, and copper is not easy;

5. The copper core cable has good stability and corrosion resistance: the copper core is resistant to oxidation and corrosion, while the aluminum core is easily oxidized and corroded.

Selection of wire and cable models

(1) When selecting wires and cables, the use, laying conditions and safety should be considered;

For example, according to different uses, power cables, overhead insulated cables, control cables, etc. can be selected;

(2) According to the different laying conditions, general plastic insulated cables, steel tape armored cables, steel wire armored cables, anti-corrosion cables, etc. can be selected;

(3) According to safety requirements, non-flammable cables, flame-retardant cables, halogen-free flame-retardant cables, fire-resistant cables, etc. can be selected.

Selection of wire and cable specifications

1. When determining the use specification (conductor section) of the wire and cable, the selection conditions such as heat generation, voltage loss, economic current density, and mechanical strength should generally be considered;

2. According to experience, the low-voltage power line is generally selected according to the heating conditions due to its large load current, and then the voltage loss is checked;

3. Mechanical strength; low-voltage lighting lines have high requirements on voltage levels, so the cross-section can be selected according to the allowable voltage loss conditions, and then the heating conditions and mechanical strength can be checked;

4. 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 use of copper core cables for power supply has the advantages of low accident rate, corrosion resistance, high reliability, and convenient construction and maintenance. Features.