DC current sensor

Details DC current sensor DC current sensor

1994-10-12

1996-06-04

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Magnetic saturation

324127, 330 8, 307416, G01R 3300

Patent

active

055236774

ABSTRACT:
A DC current sensor has a detecting core with a plurality of detecting core members adapted to be divided in a circumferential direction for receiving the lead wire. A pair of annular exciting cores on one of said detecting core members formed of saturable magnetic material has a core intersection inter-connected perpendicularly to the circumferential direction of said detecting core members, and are disposed oppositely in spaced relation with said detecting core members to magnetically saturate a portion thereof by a magnetic flux produced substantially in the perpendicular direction against a magnetic flux in the circumferential direction, produced by the DC current flowing through said lead wire being detected, and to interrupt a magnetic path by the magnetic flux in the circumferential direction periodically. Exciting coils are wound around the exciting cores in negative-phase excitation.

REFERENCES:
patent: 3007106 (1961-10-01), Bergh et al.
patent: 3284710 (1966-11-01), Schroeder
patent: 4182982 (1980-01-01), Wolf et al.
patent: 4706017 (1987-11-01), Wilson
patent: 5296802 (1994-03-01), Beranger et al.

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