接触导线是电气化铁路接触网中最重要的组成部分。我国主要采用钢铝导线,而国外电气化铁路都用铜或铜合金导线,且截面形状大致相同。现将世界上电气化铁路较多的几个国家的接触导线情况列于表1。 Contact wire is the most important part of the electrified railway catenary. China mainly uses steel and aluminum wire, and foreign electrified railway uses copper or copper alloy wire, and the cross-sectional shape is roughly the same. The status of the contact wires in several countries in the world with more electrified railways is shown in Table 1.