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:
Oct. 06, 2009
Filed:
Jan. 17, 2008
Donald W. Howell, Troutville, VA (US);
Samuel A. Taylor, Wirtz, VA (US);
Danny K. Dyess, Roanoke, VA (US);
Frank O. Blevins, Salem, VA (US);
Mark W. Vinson, Roanoke, VA (US);
Donald W. Howell, Troutville, VA (US);
Samuel A. Taylor, Wirtz, VA (US);
Danny K. Dyess, Roanoke, VA (US);
Frank O. Blevins, Salem, VA (US);
Mark W. Vinson, Roanoke, VA (US);
Admmicro Properties, LLC, Roanoke, VA (US);
Abstract
A current transformer assembly includes at least one Rogowski coil having a first closeable loop with an electrically conductive coil member and a first pair of terminals. An integrator unit has respectively a cable connected across the first pair of terminals of a respective Rogowski coil. Each respective Rogowski coil provides an output voltage received by the integrator assembly caused by when a respective electrical conductor on a phase of a multiphase circuit is arranged within an opening of the closeable first loop of the respective Rogowski coil, and provides an output signal proportional to a current in a conductor arranged in an opening of a Rogowski coil. At least one of the Rogowski coils includes an inline calibration unit for fast calibration and recalibration when retrofitting a monitor module that monitors a value of the current in one or more conductors.