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:
Jun. 13, 1978
Filed:
Dec. 27, 1976
Applicant:
Inventor:
Bernard Darrel, Schenectady, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ;
U.S. Cl.
CPC ...
324 52 ;
Abstract
To locate a corona fault in a transformer or other encased electrical apparatus by determining the propagation time for acoustic noise generated by a corona discharge, the electrical corona signal is gated and level-detected during an interval which is adjustable as to delay and length to thereby generate a timing reference to initiate acoustic signal averaging. The corona pulse can be found that results in an optimum signal-to-noise ratio in the acoustic signal being averaged, as is needed with limited test data in a noisy or reverberant acoustic environment. Also, multiple corona sources can be located.