The information of the modification of the electric system and the brake equipment of DF 4 locomotive, and their operation, were provided.
文中介绍了机车电气系统和制动系统的改造以及操作应用情况。
Acknowledge and in time effective protection of power semiconductors from fault current is of utmost importance for the reliable operation of AC equipment on electric locomotive.
电力半导体器件故障电流(特别是短路电流)的确认与及时有效保护，对电力机车交流装置的可靠工作至关重要。
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