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:
Jun. 24, 2003
Filed:
Jul. 26, 2000
Applicant:
Inventor:
Pierre Blanchard, Voreppe, FR;
Assignee:
Square D Company, Palatine, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B 1/101 ;
U.S. Cl.
CPC ...
G05B 1/101 ;
Abstract
An electronic trip device including an analog measuring for measuring electrical signals, analog-to-digital conversion having an input connected to the analog measuring an output having a first output signal, a digital processing means connected to the conversion for performing protection functions, and an offset correction. The offset corrections means are connected to the output of the conversion, and include high-pass digital filtering for computing an output signal value for each sample signal supplied by the conversion, according to an equation.