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.

Date of Patent:
Mar. 17, 2015

Filed:

Nov. 05, 2009
Applicants:

Sankara Subramanian, Stafford, GB;

Simon Richards, Abbots Bromley, GB;

Alan Wixon, Stafford, GB;

Inventors:

Sankara Subramanian, Stafford, GB;

Simon Richards, Abbots Bromley, GB;

Alan Wixon, Stafford, GB;

Assignees:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B 21/00 (2006.01); H02H 7/30 (2006.01); H02H 3/00 (2006.01);
U.S. Cl.
CPC ...
H02H 7/30 (2013.01); H02H 3/006 (2013.01);
Abstract

A method of monitoring the grading margin between at least two time-current characteristics of Intelligent Electronic Devices (IED, IED) installed in an electrical power system, each Intelligent Electronic Device comprising a counting means, the grading margin comprising a safety margin set by a user, characterized in that it comprises, when a fault occurs which causes a fault current in the electrical power system, a step of providing a warning to the user when the safety margin is infringed upon.


Find Patent Forward Citations

Subramanian, Sankara. (2015). Method of monitoring the grading margin between time-current characteristics of intelligent electronic devices (U.S. Patent No. 8981951). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8981951

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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