Post by binbin on Jul 22, 2022 4:03:32 GMT -5
Many people don't know whether to choose enameled aluminum wire or enameled copper wire in motor application. Today, I will give you a detailed analysis of the characteristics of the two types of magnet wires.
The biggest difference between enameled aluminum wire and enameled copper wire is the material of the conductor. Copper and aluminum have great differences in physical properties. These differences in physical properties have a great impact on the application of aluminum wire motors. Copper wire has slightly more advantages than aluminum wire.
The resistivity of copper wire is 0.017 and that of aluminum wire is 0.028. The cross-sectional ratio of copper wire and aluminum wire exchange is 0.79:1, and six square copper wires are equivalent to ten square aluminum wires. The diameter of the aluminum wire is thicker than that of the copper wire, and the same stator slot aluminum wire will not fit. The amount of current passing per unit area is also different. The copper wire can pass 5-8A current per square millimeter, and the aluminum wire is much less, about 3-5A.
The biggest difference between the single-phase induction motor brought by the aluminum-coated wire and the enameled copper wire is caused by the poor conductivity of the aluminum material, so the wire diameter of the enameled copper wire should be reduced to 0.12mm. The left and right will reach the same motor number as the enameled aluminum wire. On the contrary, if the single-phase induction motor that originally used enameled copper wire is changed to enameled aluminum wire, the wire diameter must be increased to some extent. , in order to achieve the specifications required by the original motor, so the motor will need more space to accommodate the increased wire diameter, but this more space is often the most difficult to provide in the motor.
In addition to the different cutoff and material of copper wire and aluminum wire, the main differences are: aluminum wire is lighter in weight, relatively cheap, and has poor mechanical strength. There will be temperature rise and poor contact, which are frequent points of failure (power failure or disconnection). In addition, aluminum is not easy to weld, has low strength, low melting point, easy oxidation, high temperature, and large loss.
However, aluminum wire also has its advantages. It is lighter in quality than copper wire and cheaper in price, so both have their own advantages.
The biggest difference between enameled aluminum wire and enameled copper wire is the material of the conductor. Copper and aluminum have great differences in physical properties. These differences in physical properties have a great impact on the application of aluminum wire motors. Copper wire has slightly more advantages than aluminum wire.
The resistivity of copper wire is 0.017 and that of aluminum wire is 0.028. The cross-sectional ratio of copper wire and aluminum wire exchange is 0.79:1, and six square copper wires are equivalent to ten square aluminum wires. The diameter of the aluminum wire is thicker than that of the copper wire, and the same stator slot aluminum wire will not fit. The amount of current passing per unit area is also different. The copper wire can pass 5-8A current per square millimeter, and the aluminum wire is much less, about 3-5A.
The biggest difference between the single-phase induction motor brought by the aluminum-coated wire and the enameled copper wire is caused by the poor conductivity of the aluminum material, so the wire diameter of the enameled copper wire should be reduced to 0.12mm. The left and right will reach the same motor number as the enameled aluminum wire. On the contrary, if the single-phase induction motor that originally used enameled copper wire is changed to enameled aluminum wire, the wire diameter must be increased to some extent. , in order to achieve the specifications required by the original motor, so the motor will need more space to accommodate the increased wire diameter, but this more space is often the most difficult to provide in the motor.
In addition to the different cutoff and material of copper wire and aluminum wire, the main differences are: aluminum wire is lighter in weight, relatively cheap, and has poor mechanical strength. There will be temperature rise and poor contact, which are frequent points of failure (power failure or disconnection). In addition, aluminum is not easy to weld, has low strength, low melting point, easy oxidation, high temperature, and large loss.
However, aluminum wire also has its advantages. It is lighter in quality than copper wire and cheaper in price, so both have their own advantages.
