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直流牵引供电系统的馈线保护以微处理器为基础，用来完成对直流快速断路器的控制和保护。
The protection of feeder line in DC traction supply system is based on microcomputer, which is used to control and protect the high-speed circuit breakers.
断路器在输电电压下的快速开断对输电系统是明显有利的。
Faster interruption of circuit breakers in the transmission voltage offers significant advantage to the transmission system.
这个工具可以快速地对施工中的多芯电缆两端相对应的端口进行测试，并进行识别，同时也能够发现电缆中芯线的短路，断路情况。
It can test the corresponding ports rapidly, identifying each conductor in the cable. At the same time, it can find the faults of cable, such as short-circuit, broken-circuit and so on.
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