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介绍了DF12型内燃机车正线试运中,在微机励磁转向油马达励磁时,由于转换开关7GK运用不当而导致微机报警。详细分析了电路图后,了解了7GK的正确用法和励磁切换规律,才使得机车正线试运顺利完成。
Introduced the DF12 diesel locomotive during the trial operation, when the magnetic field excitation motor excitation, due to the improper use of 7GK switch caused by computer alarm. Detailed analysis of the circuit diagram, to understand the correct use of 7GK and excitation switching law, it makes the successful completion of the trial locomotive locomotive.