轨道交通车辆低压配电接触器选型方法

摘要

Contactor is the key element in rail transit vehi-cle control circuit,the type selection of which depends on comprehensive factors like rated voltage,utilization catego-ry,working frequency,electrical durability,working condi-tion and so on.According to the normal loads of rail transit trains in different operating modes,correspongding type se-lections of contactor installed on railway vehicle are ana-lyzed,the selection principle and suggestions are propsed.%接触器是轨道交通车辆低压配电控制电路的核心元件，其选型由电压等级、使用类别、工作制式、电气寿命及工作环境等因素综合决定。对轨道交通车辆常用负载在各种使用类别的工况下，分析相应的接触器选型要求，给出了选型原则和建议。