Welding connection method. Suitable for high current and high temperature environments, professional welding equipment and techniques are required to melt copper wires and carbon brush surfaces through arc or gas sparks, forming a metal melting zone and firmly connecting, but strict control of heat is required to avoid excessive burning of carbon brushes.

Crimp connection method. Simple and easy to operate, without the need for professional equipment, connected through pressure and deformation, firmly connected, not easy to oxidize and burn, but with significant limitations, not suitable for high current and high temperature environments.

Mechanical connection method. Connecting copper wires and carbon brushes through threads or snap rings is safe, reliable, easy to disassemble and maintain, suitable for frequent replacement or adjustment situations, but may damage the surface structure of carbon brushes.

Star shaped connection method. Suitable for power supplies with a rated voltage of 380V and a frequency of 50Hz, attention should be paid to distinguishing between positive and negative poles.

Triangle connection method. Suitable for three-phase motors with carbon brushes, which can save wire materials, but not suitable for high-power motors.

In addition, there are other methods for connecting carbon brush wires, such as direct wiring and connecting wires through carbon brush clamps. During operation, ensure that there is no gap between the carbon brush wire and the carbon brush to avoid problems such as poor motor startup. Lubricants can also be used to assist in assembly. Before wiring, it is necessary to confirm that the power switch is turned off and wear insulated gloves and shoes to avoid the risk of electric shock.