Auto Tensioning Equipments

Auto Tensioning Device is one of the critical component of the Overhead contact lines of the Railways.It serves both as a termination as well as provides a mechanism for the automatic tensioning of the contact lines.Tensioning is needed on the contact lines due to the variation in the lengths of the contact lines (contact lines are primarily made from copper based alloys which are prone to expansion and contractions)due to variation in atmospheric temperatures.Absence of tensioning would create sag or tightening of the overhead lines creating pantograph entanglement or snapping of the OHE lines.