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:
Dec. 10, 2002
Filed:
Feb. 14, 2001
Applicant:
Inventors:
Assignee:
ABB Research Ltd, Zurich, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 2/500 ; H02H 9/00 ; H02H 5/04 ;
U.S. Cl.
CPC ...
G01R 2/500 ; H02H 9/00 ; H02H 5/04 ;
Abstract
An electrical monitor circuit in which star points of taps on a first and a second side of a three-phase current limiting device are voltage compared. Possible applications are combinations with electrical switches, especially for power supplying and protecting circuits for electrical motors.