| 摘要 |
A ground fault circuit interrupter (GFCI) device with self-test function includes: hot and neutral conducting circuits; an fault detection circuit responsive to a fault in the hot and neutral conducting circuits to generate a fault detection signal; a signal driving circuit responsive to the fault detection signal to generate a drive signal; a disconnecting mechanism for disconnecting electrical connections in the hot and the neutral conducting circuits when the drive signal exceeds a predetermined level; a self-test circuit for generating a self-test signal according to a predetermined time period and when an alternating current of the power source passes zero points, generating an evaluation result based on the self-test signal and a feedback signal of a fault detection signal corresponding to the self-test signal, and generating error signals if the evaluation result indicates a circuit error; and a device-state indicator circuit for generating alarms based on the error signals.
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