| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a distribution board enabling an operator to easily obtain the conduction state of both a trunk breaker and branch breakers and easily determine as to which electric appliances should be disconnected from power supply. <P>SOLUTION: The distribution board has a cabinet 9 for housing: a trunk breaker 1; a plurality of branch breakers 2; current sensors 3 for branch which measure a current value to be supplied to a trunk power path 10 via the trunk breaker 1; a current sensor for branch which measures, for each branch breaker 2, a current value to be supplied to electric appliances via the branch breakers 2; a display unit 8 having a plurality of display lamps 80 for trunk displaying the conduction state of the trunk breaker 1 and display lamps 81 for branch for displaying the conduction state of each of the branch breakers 2; and a measurement control unit 7 for controlling the display unit 8. The measurement unit 7 sets combinations of lighting-up states of the plurality of display lamps 80 at combinations associated with the size of the current value of the trunk breaker 1 which has been obtained by the current sensor for trunk. <P>COPYRIGHT: (C)2009,JPO&INPIT |
