| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent unexpected breaking of a breaker by predicting the overloads of apparatuses, such as a number of game machines connected to a power source in a commercial facility, such as amusement centers. <P>SOLUTION: The overcurrent alarm device is arranged in a panel board H together with a master breaker and a number of branch breakers H1, H2 connected to the secondary side of the master breaker, which comprises current detecting means A1, A2 of outputting current-detecting signals, in response to output currents of the branch breakers respectively; a control device B configured separately from the panel board, which judges whether the current detecting signals exceed set current values to operate so as to output overcurrent detecting signals, when exceeding the set current values, and a display means C configured separately from the panel board and the control device, for displaying judgment outputs of the branch breakers respectively, in response to deciding of outputting of signals output from the control device. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
