| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for measuring the total power of a specific load, where the total power of the specific load as a whole can be measured easily using one power analyzer, even when there are a plurality of specified loads of the same kind. SOLUTION: In a master ring 61 of a first double clamp CT, an R-phase main trunk 2 is passed into it, and in a master ring 63 of a second double clamp CT, an interconnection 40 is passed into it from an interconnection 37 on the side of an N-phase main-trunk terminal part 6 of a plurality of plug sockets arranged across an R-phase and an N-phase. A slave ring 62 of the first clamp CT and a slave ring 64 of the second clamp CT are passed into a ring 81 of a clamp CT, in such a way that a current flowing in the slave ring 62 of the first clamp CT and a current flowing in the slave ring 64 of the second clamp CT are substituted in terms of a vector. The clamp 81 of the clamp CT is connected to an R-phase current input terminal 80 of a power analyzer 7. |
