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Current sensor and electric network comprising such a current sensor

  • US 9,897,631 B2
  • Filed: 02/01/2016
  • Issued: 02/20/2018
  • Est. Priority Date: 02/02/2015
  • Status: Active Grant
First Claim
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1. A current sensor comprising:

  • a measurement torus, arranged in a casing positioned around an electric conductor able to transmit an electric current; and

    detection circuitry configured to detect a voltage in the electric conductor, the detection circuitry being constructed so as to surround the electric conductor when the current sensor is installed,wherein the detection circuitry includes;

    a measurement strip positioned at a non-zero distance from the electric conductor,a shielding which defines an electric ground of the detection circuitry, anda comparison circuit electrically connected to the measurement strip,wherein the measurement strip is arranged inside the casing, at an inner surface of the casing,wherein a portion of the measurement strip directly faces the electric conductor, without interposition of the shielding,wherein the shielding radially surrounds the measurement strip with respect to the central axis of the current sensor, andwherein the shielding is adjacent opposite edges of the measurement strip in a direction of a central axis of the current sensor.

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