Current measuring transducer operating on the compensation princ

Details Current measuring transducer operating on the compensation princ Current measuring transducer operating on the compensation princ

1993-03-25

1994-05-03

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Magnetic saturation

324127, 324158R, G01R 3300

Patent

active

053090861

ABSTRACT:
The invention relates to a current measuring transducer operating on the compensation principle, comprising two magnetic cores (C1, C2) with windows; windings wound thereon for both a current (Ip) to be measured and for a compensation current (Is); and means (Um, Nm, R1, D, IA) for generating the compensation current and adjusting the magnitude thereof. To compensate for induced interference voltages, a further winding (Nc1, Nc2) is arranged about both magnetic cores of the current transducer. To widen the frequency band, the windings (Nc1, Nc2) are series-connected in a closed loop through a frequency-dependent impedance (Z).

REFERENCES:
patent: 4118597 (1978-10-01), Proctor et al.
patent: 4482862 (1984-11-01), Leehey
patent: 4616174 (1986-10-01), Jorgensen
patent: 4899103 (1990-02-01), Katzenstein
patent: 4912396 (1990-03-01), Groenenboom
patent: 4967145 (1990-10-01), Davies
patent: 5008612 (1991-04-01), Otto

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