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:
May. 30, 1995
Filed:
Mar. 02, 1994
Patrice Allin, Meylan, FR;
Gerard Gaildrat, Meylan, FR;
Other;
Abstract
A system for continuously monitoring electrical conduction of an AC power system comprises at least one measuring module connected between two conductors of the power system. A measuring cycle is divided into two periods. During the first period, the module measures a first DC voltage component, representative of the stray DC components, applied to its terminals. During the second period, the measuring module inputs a DC current component to the power system and measures a second DC component of the voltage applied to its terminals. The difference between the second and first components is used to detect a conduction fault, the line resistance upline from the measuring module being proportional to this difference. The first and second components are obtained by computing the mean value, weighted if necessary, of DC voltage samples measured during measuring periods of a duration lower than or equal to the first and second periods.