OHLE, also known as Overhead Line Equipment, refers to the system of electrical cables and equipment that supply power to electric trains and trams. These systems are commonly found in railway and tramway networks all over the world, ensuring a reliable power source for the operation of electrically powered locomotives. OHLE consists of various components that work together to transmit the necessary electric current to the trains and trams.
The main elements of an OHLE system include the overhead cables, which are typically suspended from a gantry or mast along the track. These cables carry high voltage electricity that is transferred to the trains through pantographs or collector shoes installed on the vehicles. The gantries or masts are strategically placed along the track to provide an uninterrupted power supply.
Additional components of an OHLE system may include insulators, droppers, tensioning devices, and conductors that ensure efficient and safe power transmission. Insulators are used to prevent current leakage or short circuits, while droppers are attached to the overhead cables to supply power to the trains at regular intervals. Tensioning devices maintain appropriate tension in the overhead wires to prevent sagging and ensure consistent power supply.
OHLE systems have revolutionized railway transportation by eliminating the need for fossil fuels and reducing pollution. They offer several advantages such as quick acceleration, higher speeds, and quieter operation compared to traditional locomotives. OHLE systems require regular maintenance to ensure safe and reliable functioning, including inspections of cables, pantographs, and other components.
In summary, OHLE refers to the collection of equipment, cables, and components that provide electrical power to electric trains, trams, and other electrically driven locomotives, enhancing the efficiency and sustainability of railway transportation.
