Current measuring and magnetic core compensating apparatus...

Details Current measuring and magnetic core compensating apparatus... Current measuring and magnetic core compensating apparatus...

G - Physics

01

R

324/59

G01R 21/00 (2006.01) G01R 15/18 (2006.01) H01F 27/42 (2006.01)

Patent

CA 1286366

Current Measuring and Magnetic Core Compensating Apparatus and Method Abstract DC magnetic flux bias imposed on a magnetic core of a current transformer is compensated in response to an indication of the amplitude and duration of opposite polarity secondary winding current components. In a second embodiment, the magnetic bias is compensated by responding to the integral of the secondary current. The integral of the secondary current is a measure of the magnetic core flux variations. The durations of the positive and negative flux variations are compared.

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