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. 19, 2000
Filed:
Apr. 01, 1999
Todd W Klippel, Oak Park, IL (US);
S&C Electric Company, Chicago, IL (US);
Abstract
A voltage sensing arrangement is provided that facilitates accurately measuring a sensed voltage while also providing isolation to a sensing path during a test mode of an associated indicator arrangement. The voltage sensing arrangement includes a voltage sensor that is arranged to sense the voltage on an associated power distribution line. A first arrangement is responsive to the voltage sensor for providing an output representing the voltage on the associated power distribution line. The voltage sensing arrangement includes a second arrangement that is responsive to the voltage sensor for isolating the first arrangement from the voltage sensor whenever voltage is not present on the associated power distribution line. In a preferred embodiment, a third arrangement is provided that is responsive to the presence of voltage on the associated power distribution line for isolating a test path from the voltage sensor.