| 摘要 |
PURPOSE:To prevent an overload by equalizing a detected current through providing a plurality of branch circuits diverging from a main line with diverging circuit-breakers, electric galvanometers and detected current displays and through switching receptacles connected with the branch circuits. CONSTITUTION:A master circuit-breaker 1 is inserted in a single-phase three- wire system main, diverging circuit-breakers 2(i=1 to n) are respectively connected with a plurality of branch circuits diverging from the R-to N-phases and S- to N-phases of the main, and current detectors 4i and connector 5 are interposed between the diverging circuit-breakers 2i and many receptacles 3(31 to 318). Terminals 5a on the receptacle 3 side of the connector 5 are provided for respective receptacle 3 and a plurality(six in the drawing) of terminals 5b on the current detection display 4i side are provided for each branch circuit. The terminals 5a and 5b are connected by cords 5c so that the indicated values of current flowing through respective branch circuits are equalized as much as possible. Thus, the load values of respective branch circuits are equalized and the current interruption by overload is suppressed. |
