Current Collectors

Current Collectors

Current collectors are devices used in electrical systems to collect the electric current from a moving conductor and transfer it to a stationary device. They are commonly used in electric trains, trams, and trolleybuses, where they collect power from overhead wires or third rails. The design of current collectors varies depending on the application, but they typically consist of a sliding contact shoe or pantograph that makes contact with the power source. One of the most common types of current collectors is the pantograph, which is used in electric trains and trams. The pantograph consists of two arms that are connected by a sliding contact shoe. The shoe makes contact with an overhead wire, and the arms keep the shoe in contact with the wire as the train or tram moves along the track. The pantograph is designed to maintain a constant contact force with the overhead wire, which helps to reduce wear and tear on both the pantograph and the wire. Another type of current collector is the third rail shoe, which is used in trolleybuses and some electric trains. The third rail shoe consists of a metal shoe that makes contact with a third rail that runs alongside the track. The shoe is designed to maintain a constant contact force with the third rail, which helps to reduce wear and tear on both the shoe and the rail. Overall, current collectors are essential components of many electrical systems, particularly in the transportation industry. They allow for the efficient transfer of electrical power from a stationary source to a moving conductor, which is critical for the operation of electric trains, trams, and trolleybuses.

electrical systems, pantograph, overhead wire, third rail shoe, transportation industry

— Mark Wilson