| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a current measuring apparatus capable of accurately measuring a current flowing in a conductor to be a current value measuring target even when a generation source of magnetic field noise exists in the vicinity of the conductor.SOLUTION: A current measuring apparatus 10 includes: a conductor (bus bar) 11 forming a linear shape; a first substrate (base body) 12A arranged on an arbitrary measurement section S of the conductor 11 and having one surface (face) 12a expanded vertically to a longitudinal direction D of the conductor 11; and three or more magnetic sensors, e.g. four magnetic sensors, separately arranged so as to surround the conductor 11 along the one surface 12a of the first substrate 12A. Further, the current measuring apparatus 10 includes a second substrate 12B arranged so as to be separately opposed to the first substrate 12A and having an integrated circuit (arithmetic part). The current measuring apparatus 10 also includes a housing 19 for accommodating the first substrate 12A and the second substrate 12B.</p> |
