Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2011-06-14
2011-06-14
He, Amy (Department: 2858)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
C324S551000, C324S536000
Reexamination Certificate
active
07960977
ABSTRACT:
A method, device and computer program product for determining the change in insulating ability of the insulation provided between two objects of an inductively operating element, where at least one of the objects is a winding. The device includes an analyzing unit, which obtains a first frequency spectrum associated with a frequency response to a signal of varying frequency, where the signal of varying frequency can be applied to a first object of the inductively operating element and the frequency response is obtainable from a second object of the inductively operating element, compares the obtained first frequency spectrum with a second reference frequency spectrum, detects a peak in the obtained first frequency spectrum that does not appear in the second reference frequency spectrum, analyzes the shape of the detected peak, and determines the change in insulating ability based on the analyzed shape.
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ABB Research Ltd.
He Amy
St. Onge Steward Johnston & Reens LLC
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