The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 11, 2014
Filed:
Jul. 22, 2008
Rudolf Gati, Wettingen, CH;
Markus Abplanalp, Baden-Dättwil, CH;
Rudolf Gati, Wettingen, CH;
Markus Abplanalp, Baden-Dättwil, CH;
ABB Research Ltd., Zürich, CH;
Abstract
A sensor unit for the measurement of a current in a conductor () comprising at least one magnetoresistive sensor () located at a radial distance from the outer surface of the conductor () is disclosed, wherein the conductor () has a circular cross-section, and wherein it comprises at least one auxiliary coil () for the generation of a bias magnetic field (H) to the magnetoresistive sensor () strong enough for inducing magnetic saturation in the magnetoresistive sensor () continuously during the whole current measurement process. Further the use of such a sensor and a method for measuring the current in the conductor using such a sensor unit are disclosed.