| 摘要 |
PROBLEM TO BE SOLVED: To minimize the damage caused by ground fault, by shortening the time required for detection and break of a faulty circuit and restraining it from unnecessarily breaking a sound circuit, in a grounding fault sequence breaker which is installed in a substation. SOLUTION: A grounding fault sequence breaker which is installed in the substation, where a plurality of circuits are connected via a line switch LS1 or LS2 to a bus, determines whether circuits are connected to the faulty system F1 by reading in signals that shows the connecting situation of the switch LS1 or LS2, and outputs a break command to only circuits connected to the faulty circuit when breaking the circuits in order. COPYRIGHT: (C)2010,JPO&INPIT |
