To prolong the service life of trolley lines, the most important thing is to purchase reliable quality trolley lines and choose brand manufacturers. Secondly, the standard use of trolley lines in daily production and use is also one of the reasons for extending the service life of trolley lines. Because a large inrush current will be generated when the motor is started, and a voltage drop will also occur if the trolley line is too long, so in order to protect the safety trolley line to the greatest extent and maximize its value, it is important to choose the trolley line When it is necessary to properly increase the cross-sectional area of ​​the trolley line, connect the power line to the middle of the trolley line, or supply power at multiple points to ensure voltage stability.