| 摘要 |
PROBLEM TO BE SOLVED: To attain reconfiguration with high precision over the whole wide measuring range by determining a signal indicating the amplitude of a current signal supplied by a sensor to determine a signal indicating a phase between signals, and determining a signal indicating phase current to be subjected to reconfiguration. SOLUTION: This tripping device, receiving the signals which indicate currents Ip1, Ip2, Ip3 passing through a conductor 36 to be protected, includes a processing unit connected to current sensors 2, 3. The signals Is1 and Is3 are supplied to the input of a current signal processing circuit 4. The current signal processing circuit 4 supplies a signal indicating measured and processed current to a tripping function processing circuit 5. A phase reconfiguration circuit 6 connected to the current signal processing circuit 4 and the tripping function processing circuit 5 receives a signal indicating measured current and supplies a signal indicating a phase subjected to reconfiguration. It is thus possible to provide a reconfiguration means capable of preventing or restricting generation of a reconfiguration error.
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