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Device and method for measuring a current flowing in an electrical conductor

  • US 20080048655A1
  • Filed: 07/13/2007
  • Published: 02/28/2008
  • Est. Priority Date: 07/14/2006
  • Status: Active Grant
First Claim
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1. A device for measuring a current flowing in an electrical conductor, said device comprising:

  • a magnetic circuit adapted to be coupled to an electrical conductor, the magnetic circuit having an air gap;

    a magnetic field sensitive component disposed in the air gap to measure a magnetic field generated by the electrical conductor;

    at least one control core having a control winding configured to control an effective length of the air gap when the control winding is energized; and

    a magnetic shield that at least partially encloses the magnetic circuit, the magnetic field sensitive component and the at least one control core.

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