论文部分内容阅读
1存在问题机车在线路牵引过程中,经常性地加载和卸载满足运行中阻力变化的要求以达到恒速运行。由于加载和卸载不断切换,励磁接触器(LC)与电控接触器(1-6C)频繁吸合和释放,励磁接触器在断开的时刻受到强电流放电影响,经常烧损主触头。同时因电控接触器开距和超程不能达到完全相同,6台电控接触器不能满足同步吸合和断开,个别电控接触器释放提前造成触头的烧损,因此有必要采取有效的措施加以防止。
1 problems locomotive traction in the process of the line, regularly load and unload to meet the requirements of changes in resistance during operation to achieve constant speed operation. Due to the continuous switching of loading and unloading, the excitation contactor (LC) and the control contactor (1-6C) frequently pull in and release. The excitation contactor is affected by strong current discharge at the moment of disconnection and often burns the main contact. At the same time due to the opening and closing of the electronic control contactor can not reach exactly the same, 6 sets of electronic control contactor can not meet the synchronous pull and disconnect, the release of individual contactors in advance caused the burning of contacts, it is necessary to take effective The measures to prevent it.