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对东风4C型机车的重联电路、喇叭与撒砂电路以及故障励磁电路等进行了改进,以克服由于重联电路短路造成停机及由于故障励磁时发生“窜车”等问题。
The reconnection circuit, loudspeaker and sanding circuit and fault excitation circuit of DF4C locomotive are improved to overcome the problems of stoppages due to short circuit of reconnection circuit and “channeling” during excitation due to fault.