Alternating current sensor

Details Alternating current sensor Alternating current sensor

G - Physics

01

R

G01R 19/00 (2006.01) G01R 15/18 (2006.01) H01F 38/32 (2006.01)

Patent

CA 2273376

The alternating current measuring device of the present invention has a transformer-like iron core structure , the circuit in which the current to be measured is connected to the primary winding (current input winding), the secondary winding comprises two independent units, namely output current winding and measuring winding. The conductor for the output current winding is of high stability with low temperature coefficient of resistance. Nearly the entire induced current in the secondary side flows in the output current winding, finally the induced voltage in the measuring winding is detected by the measuring device. By this scheme those disadvantages of the conventional measuring device such as high temperature rise , high resistance caused by increased temperature coefficient of the conductor and the load resistance effect are minimized to achieve the aim of high accuracy alternating current measurement.

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