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1 问题的提出 1999年 8月 2 0日 ,我厂厂修东风4Ｂ型 352 9号内燃机车在正线试运行测定各牵引电动机电流分配试验试验项目时 ,6台牵引电动机电流分配不均 ,第 2位、第 5位电机全磁场工况额定电流 4 4 0 0Ａ时不均匀度最大达 2 1 3% ,大大超出东风4Ｂ型内燃机车大修规程 11
1 raised the issue August 20, 1999, I plant repair Dongfeng 4B Type 352 9 diesel locomotive in the front-line test run all the traction motor current distribution test pilot project, the six traction motor current distribution is uneven, the first 2, No. 5 motor magnetic field conditions rated current 4 4 0 0A when the maximum non-uniformity up to 2 1 3%, greatly exceeding the overhaul of DF4B locomotive specification 11