1.励磁回路加装电流表目前东风型内燃机车无电压、无电流故障对有发生,有的在途中造成机破事故,给运输生产带来损失。东风型内燃机车采用的励磁方式比较复杂,如图1所示。励磁环节多,在途中发生故障后,乘务员不易判断和处理,为了帮助乘务员迅速处理故障,可在励磁回路中加入两块电流表,监视励 1. Excitation circuit to install ammeter At present, Dongfeng diesel locomotive no voltage, no current fault occurs, and some cause the machine broken accident on the way, to transport production losses. Dongfeng diesel locomotive excitation method used is more complicated, as shown in Figure 1. Exciting many links in the way after the failure, the steward is not easy to judge and deal with, in order to help flight attendants quickly handle the fault, the excitation circuit can be added to the two ammeter, monitor excitation