Advantages and Disadvantages of Copper/Aluminum Transformer

Copper wire transformer: copper wire resistivity is low, so the electrical conductivity is good, good thermal conductivity, mechanical strength is higher than the aluminum wire, tensile performance is better than the aluminum wire, copper wire melting point is higher than the aluminum wire, so the short-circuit resistance is strong. Because of the low resistivity and good conductivity of copper wire, it is easier to produce energy-saving transformers that meet the energy efficiency standards. And the aluminum wire transformer to meet the energy efficiency standard value, must increase the wire cross section, so that the transformer volume increases.

Aluminum wire transformer: Conductive performance is worse than copper wire, low melting point, poor short-circuit resistance, mechanical strength is worse than copper wire, wire is easy to break, poor ability to resist sudden short circuit, poor thermal stability, poor impact resistance, aluminum wire variable pressure welding joint in lightning impact and current under the action of easy to burn, aluminum is easy to oxidation, easy to corrosion. The lead wire welding process of aluminum wire transformer is more complex, the connection is easy to break after the dramatic force vibration, the long-term operation of the connection is easy to produce chemical reaction, leading to resistivity increase, produce local overheating phenomenon, under the same capacity, the body of aluminum wire transformer is larger than the volume of copper wire transformer. But the same capacity of aluminum wire transformer and copper wire transformer, aluminum wire cost is low, light weight.

Advantages and Disadvantages of Copper/Aluminum Transformer

Copper wire transformer:

copper wire resistivity is low, so the electrical conductivity is good, good thermal conductivity, mechanical strength is higher than the aluminum wire, tensile performance is better than the aluminum wire, copper wire melting point is higher than the aluminum wire, so the short-circuit resistance is strong. Because of the low resistivity and good conductivity of copper wire, it is easier to produce energy-saving transformers that meet the energy efficiency standards. And the aluminum wire transformer to meet the energy efficiency standard value, must increase the wire cross section, so that the transformer volume increases.

Aluminum wire transformer:

Conductive performance is worse than copper wire, low melting point, poor short-circuit resistance, mechanical strength is worse than copper wire, wire is easy to break, poor ability to resist sudden short circuit, poor thermal stability, poor impact resistance, aluminum wire variable pressure welding joint in lightning impact and current under the action of easy to burn, aluminum is easy to oxidation, easy to corrosion. The lead wire welding process of aluminum wire transformer is more complex, the connection is easy to break after the dramatic force vibration, the long-term operation of the connection is easy to produce chemical reaction, leading to resistivity increase, produce local overheating phenomenon, under the same capacity, the body of aluminum wire transformer is larger than the volume of copper wire transformer. But the same capacity of aluminum wire transformer and copper wire transformer, aluminum wire cost is low, light weight.