Arrangement for measuring the current flowing in an electric conductor
First Claim
1. An arrangement for measurement of a current flowing in an electrical conductor, the arrangement comprising:
- a magnetic circuit with an air gap for coupling to the electrical conductor;
two control cores for controlling the air gap, the control cores being arranged in the air gap, wherein the control cores each have a control winding for magnetic saturation of the respective control core;
a magnetic-field-sensitive component arranged in the air gap between the control cores in order to measure the magnetic field produced by the electrical conductor; and
one or more additional elements located in the vicinity of the magnetic-field-sensitive component and suitable for guidance of magnetic fields in the vicinity of the magnetic-field-sensitive component independent of the control cores.
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Accused Products
Abstract
The invention relates to an arrangement for measurement of a current flowing in an electrical conductor having a magnetic circuit, for coupling to the electrical conductor, wherein the magnetic circuit has an air gap. A magnetic-field-sensitive component is located in the air gap in the magnetic circuit and is used to measure the magnetic field produced by the electrical conductor. Two control cores are arranged in the air gap in the magnetic circuit, wherein the control cores each have a control winding for magnetic saturation of the respective control core. The magnetic-field-sensitive component is arranged between the control cores and one or more additional elements are located in the vicinity of the magnetic-field-sensitive component, and are suitable for guidance of disturbing magnetic fields in the vicinity of the magnetic-field-sensitive component, independent of the control cores.
12 Citations
15 Claims
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1. An arrangement for measurement of a current flowing in an electrical conductor, the arrangement comprising:
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a magnetic circuit with an air gap for coupling to the electrical conductor; two control cores for controlling the air gap, the control cores being arranged in the air gap, wherein the control cores each have a control winding for magnetic saturation of the respective control core; a magnetic-field-sensitive component arranged in the air gap between the control cores in order to measure the magnetic field produced by the electrical conductor; and one or more additional elements located in the vicinity of the magnetic-field-sensitive component and suitable for guidance of magnetic fields in the vicinity of the magnetic-field-sensitive component independent of the control cores. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification