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:
Sep. 05, 2006
Filed:
Jul. 02, 2003
Simon Tian, Chalon, FR;
Simon Tian, Chalon, FR;
Schneider Electric Industries SAS, Rueil Malmaison, FR;
Abstract
The monitoring device of a neutral conductor and earth conductor comprises processing means, and first voltage detection means to supply a first signal representative of a voltage between neutral and earth to said processing means. The device also comprises second voltage detection means to supply a second signal representative of a voltage between phase and earth to said processing means, and third voltage detection means to supply a third signal representative of a voltage between phase and neutral to said processing means. The processing means supply a loss neutral of signal and/or a loss of earth signal according to the values of the first, second and third signal. The electrical switchgear apparatus comprises such a monitoring device to trigger opening of main contacts.