| 摘要 |
<P>PROBLEM TO BE SOLVED: To measure with a smaller number of measuring devices the power consumed by electrical equipment connected to a shunting breaker at each store of a retail chain comprising a large number of stores. <P>SOLUTION: A power measuring device 4 for measuring power consumed by objects of measurement is provided on a distribution board 3 installed in a store using a plurality of units of electrical equipment; the power measuring device 4 comprises a first measuring unit for measuring consumed power through master circuit breakers 11 and 21 and a second measuring unit for measuring consumed power through shunting breakers 12 and 22 to which various units of electrical equipment are connected; where combinations of the shunting breakers 12 and 22 with electrical equipment are alike among different stores, the second measuring unit is provided for only some sets of shunting breakers 12 and 22 out of a whole plurality of sets of shunting breakers 12 and 22. <P>COPYRIGHT: (C)2012,JPO&INPIT |
