| 摘要 |
<p>A method, device, and system for detecting a fault for a protective device. The device can receive an input signal and detect a power spike in the input signal. If a power spike is detected in the input signal, the device simultaneously disables the trip mechanism for one or more protective devices and starts a time period. During the remainder of the time period, the device compares the input signal and the threshold value. If, during the remainder of the time period, the input signal exceeds the threshold value, and if the fault originates within a region between the multiple sensing devices, then the trip mechanism for each protective device is again enabled.</p> |
