Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2005-06-07
2005-06-07
Deb, Anjan K. (Department: 2858)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
C324S701000, C324S230000
Reexamination Certificate
active
06903556
ABSTRACT:
There is provided an apparatus and associated method for the testing of a laminated core (100) for an electrical machine. The apparatus supplies an excitation signal to the winding (102) of the electrical machine which is of a frequency higher than the rated operating frequency of the machine. There is also provided a phase sensitive detector (110) which receives, from the laminated core (100), a signal in response to the excitation signal. The phase sensitive detector (110) resolves the received signal into a number of components. These components are resolved relative to a reference signal. The size of the components determines the severity of any fault that exists within the laminated core (100.
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Adwel International Limited
Deb Anjan K.
Westman Champlin & Kelly P.A.
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