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:
Jan. 16, 1996
Filed:
Mar. 31, 1994
Richard E Salnick, Monroeville, PA (US);
Mark H Emerson, Murrysville, PA (US);
Paul C Gaberson, Forest Hills, PA (US);
Charles D Bice, Clinton Township, PA (US);
Westinghouse Electric Corporation, Pittsburgh, PA (US);
Abstract
An online system for diagnosing operability of a rotating electrical apparatus includes sensors producing electrical variables corresponding to operating conditions of the apparatus, data converters for converting the electrical variables to digital values, a comparator for comparing the values to corresponding predetermined baseline values of the apparatus and producing a corresponding comparison value, and a signalling mechanism for outputting signals related to a period of predicted operability of the apparatus whenever the comparison value exceeds a corresponding predetermined deadband value. The operating conditions may be non-electrical operating conditions, such as a condition of a lubrication system or a bearing of the apparatus. Alternatively, the sensors may sense electrical insulation non-thermal parameters during operation of the apparatus, in order to produce signals related to the operability of an insulator of the apparatus. The system may have a local processor for performing the comparisons and signaling. Alternatively, the system may include an intermediate data storage and communication mechanism for storing and communicating the sensed values to a remote processor. The processor may also trend the values with respect to time and determine a derivative of a sensed value. The apparatus may be a motor operating in a hazardous environment, such as a reactor coolant pump (RCP) motor operating in a nuclear containment vessel.