| 摘要 |
PURPOSE: To prevent trouble due to the abrupt interruption of power supply from occurring by comparing the measured value of current and the value of alarm current, and producing alarm signal output based on the result of the comparison. CONSTITUTION: An alarm device 6, installed on a distribution board 1, consists of a current detector 7 that measures the value of consumed current on the output side of circuit breakers 2a-2e; a measured value processing section 8 that processes the measured value of current; an alarm setting section 9 that sets a value of alarm current; a comparing and detecting section 10 that produces alarm signal output based on the result of comparison of the measured value of current and the value of alarm current; and an alarm generating section 11. A current, corresponding to the value of current passing through an internal power supply line 4 and indoor wiring 5, is output to the measured value processing section 8 through connecting lines 15. A circuit comprising the measured value processing section 8, the alarm setting section 9, the comparing and detecting section 10, an alarm generating circuit 25 and so on, is connected to each of the circuit breakers 2a-2e. The circuits are connected with LEDs 28a-28e, respectively, and a buzzer 26 is connected to the circuits and shared among them. |
