Open trolley current leadOpen trolley current lead serves as a classic power supply for bridge and gantry cranes. Rolled steel is used for the busbar material: angle, channel, bent sheet, rail, etc. Copper and aluminum can be used together with steel as a material to increase the maximum operating current. Electrical protection rating IP00. Current collectors can be in the form of cast iron shoes, as well as more modern ones with spring-loaded bronze brushes. Such current collectors can work in the vertical and horizontal plane. Cast iron shoes provide contact only due to their weight and press on the busbar profile from above. Main disadvantages: unsafe due to open contact buses, susceptible to icing in the open air, high material consumption. | 
Short production time
