| 摘要 |
PROBLEM TO BE SOLVED: To provide a rail current detector capable of reliably detecting presence/absence of the load current with a simple configuration, and reliably opening a disconnector, accordingly. SOLUTION: The rail current detector comprises a detection means 12 which detects the AC current running in a rail 11 and outputs the signal according to the AC current when an electric vehicle is connected to a trolley cable 24, a determination means 13 to output the determination signal when the rail current detected by the detection means 12 is equal to or greater than a predetermined value, and a display means 15 to perform the display corresponding to presence/absence of the AC current running in the rail 11, and further comprises a blocking means 16 to block the operation of a disconnector 23 connected to the trolley cable 24 by the input of the determination signal. COPYRIGHT: (C)2006,JPO&NCIPI
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