Current intensity transformer device for measuring a variable el

Details Current intensity transformer device for measuring a variable el Current intensity transformer device for measuring a variable el

1990-04-09

1992-09-08

Nguyen, Vinh

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With coupling means

324117H, 324117R, G01R 1900

Patent

active

051461560

ABSTRACT:
In the present current intensity transformer device, a magnetic circuit having an air-gap provided with a Hall cell, is coupled with a conductor for the current to be measured and with a measuring winding. An electric measuring circuit provides a first voltage which is a function of the magnetic field in the air-gap, and a second voltage which is a function of the current in the measuring winding. Both voltages are added together to provide a measure of variable currents, such as pulse currents or periodic currents of a strongly asymmetrical wave form, as well as direct currents or low frequency alternating currents with superposed strong high frequency undulation.

REFERENCES:
patent: 2928048 (1960-03-01), Postal
patent: 3573616 (1971-04-01), Kahen
patent: 4099238 (1978-07-01), Suzuki
patent: 4234846 (1980-11-01), Maringer
patent: 4460867 (1984-07-01), Fleissner
patent: 4639665 (1987-01-01), Gary
patent: 4682101 (1987-07-01), Cattaneo
patent: 4961049 (1990-10-01), Ghislanzoni

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