Current measuring transducer operating on the compensation principle
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United States of America Patent
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May 3, 1994
Grant Date -
N/A
app pub date -
Mar 25, 1993
filing date -
Apr 2, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
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).
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