| 摘要 |
<p>[PROBLEMS] To prevent a sudden interruption of current while using a plurality of electric apparatuses as effectively as possible within the determined "restrictions" when connecting a power supply source "having restrictions such as an interruption of current when the use current exceeds the contracted current value" and a power load "consisting of a plurality of electric apparatuses" in view of the fact that, although there is no more annoying thing than power supply consumption restrictions represented by a "breaker" in the present society with an increasing number of electric apparatuses, however, door-to-door restrictions for power supply consumption with this type of current breaker is essential in order to effectively use limited resources. [MEANS FOR SOLVING PROBLEMS] Electric power from an electric power company is supplied to a breaker installed in each house via a pole transformer. A non-contact type current sensor is inserted in a power supply trunk line of the breaker in the house to detect a use current value and calculate an excessive current value which is a difference between the use current value and the contracted current value. Electric apparatuses which consume current having the excessive current value or above are not permitted to be plugged in.</p> |
