The object of using DC fuse in tunnels and way of selection were expounded, including the selection of rated voltage and current, and the coordination of circuit breakers.
概述了在轨道交通系统中选用直流熔断器的目的及选用方法，包括额定电压、额定电流的选择，与断路器的配合工作。
The coordination requirements and test methods of short circuit protective device (SCPD) in standard GB14048.4 are introduced. The selection methods of circuit breaker or fuse as SCPD are described.
介绍GB 14 0 4 8 4中与短路保护装置(SCPD)协调配合的要求和试验方法，叙述SCPD为断路器或熔断器时选配方法。
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