高速铁路用新型铜合金接触线电阻温度系数试验研究

Study on Resistance Temperature Coefficient for New-type Copper Alloy Contact Wire for High Speed Railway

测试高速铁路用新型铜合金接触线在-50℃-150℃范围内的电阻值,通过对得到的＂温度—电阻＂关系进行线性拟合,得到接触线的电阻温度系数。将该系数与TB/T 2809—2005《电气化铁道用铜及铜合金接触线》和EN 50149：2012中相近接触线的电阻温度系数进行对比,分析其差异性和相似性,提出相应建议,为新型铜合金接触线的产品电阻率检测与工程计算提供依据。

By testing the resistance of new-type copper alloy contact wire for high speed railway within a temperature range of -50℃ -150℃, it can obtain the resistance temperature coefficient of contact wire upon linearly fitting the measured＂temperature--resistance＂relationship. By comparing the coefficient with the resistance temperature coefficients of similar contact wires as specified in TB/T 2809—2005＂Copper and Copper-alloy Contact Wires for Electric Railway＂and EN 50149：2012,the article analyses the difference and similarity and gives corresponding suggestions,providing a basis for resistivity testing and engineering calculation of new-type copper alloy contact wire for high speed railway.