Railway applications - Electric equipment for rolling stock - Part 4: electrotechnical components - Rules for AC circuit-breakers.
铁路设施。机车车辆用电气设备。第4部分：电工元件。交流断路器规则。
The normal operation of the electric equipment in the railway signal equipment has played an important role in the safety operation and operation efficiency.
铁路信号设备中电气集中设备的正常运行对行车安全和行车效率起着举足轻重的作用。
Railway applications - Electric equipment for rolling stock - Part 3: Electrotechnical components; Rules for d. c. circuit - breakers.
铁路设施。机车车辆用电气设备。第3部分：电工元件。直流断路器规则。
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