Alternating current measuring device

Details Alternating current measuring device Alternating current measuring device

1996-10-23

1999-09-07

Nguyen, Vinh P.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With coupling means

324117R, G01R 1900

Patent

active

059492317

ABSTRACT:
The alternating current sensor 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 includes two independent units, namely output current winding and exit 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 voltage meter. By this scheme those disadvantages of the conventional alternating current sensor such as high temperature rise, resistance variation 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.

REFERENCES:
patent: 1129231 (1915-02-01), Robinson et al.
patent: 3011714 (1961-12-01), Wheeler
patent: 3546565 (1970-12-01), Downing, Jr. et al.
patent: 3881149 (1975-04-01), Kilo

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