Apparatus for measuring the intensity of a current flow along an elongated electrical conductor and method for compensating an influence of the position of the elongated electrical conductor on the measurement
AssigneeWAGO Verwaltungsgesellschaft mbH
InventorTristan NENTWIG
Life of this patent
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Abstract
An apparatus for measuring the intensity of a current flow along an elongated electrical conductor and a method for compensating for the influence of the position of the elongated electrical conductor on the measurement are provided. Magnetic field strengths are measured at two positions offset from each other substantially parallel to the axis of mirror symmetry and the magnetic field strengths are used to compensate for the influence of an offset of the elongated electrical conductor substantially parallel to the axis of mirror symmetry on the measurement
Claims17
A method for compensating for an influence of a position of an elongated electrical conductor on a measurement of an intensity of a current flow along the elongated electrical conductor by a magnetic field sensor, the method comprising:
- providing a magnetically permeable structure surrounding the elongated electrical conductor, a cross-section of the magnetically permeable structure exhibits an axis of mirror symmetry or the cross-section of the magnetically permeable structure exhibits an axis of mirror symmetry at least in an area around the elongated electrical conductor, a longitudinal axis of a section of the elongated electrical conductor surrounded by the magnetically permeable structure being substantially perpendicular to the axis of mirror symmetry;
- and
- measuring magnetic field strengths at two positions offset from each other substantially parallel to the axis of mirror symmetry and using the magnetic field strengths to compensate for the influence of an offset of the elongated electrical conductor substantially parallel to the axis of mirror symmetry on the measurement.
An apparatus for measuring an intensity of a current flow along an elongated electrical conductor, the apparatus comprising:
- a magnetically permeable structure surrounding the elongated electrical conductor, a cross-section of the magnetically permeable structure exhibits an axis of mirror symmetry or the cross-section of the magnetically permeable structure exhibits an axis of mirror symmetry at least in an area around the elongated electrical conductor, wherein a longitudinal axis of a section of the elongated electrical conductor surrounded by the magnetically permeable structure is substantially perpendicular to the axis of mirror symmetry;
- a first magnetic field sensor;
- and
- a second magnetic field sensor, the first and second magnetic field sensors being offset from each other substantially parallel to the axis of mirror symmetry or arranged mirror-symmetrically to the axis of mirror symmetry.
Dependencies are inferred from the claim text.