Current transducer arrangement

Details Current transducer arrangement Current transducer arrangement

1975-07-09

1977-02-08

Pellinen, A. D.

Electricity: power supply or regulation systems

Remote sensing

324127, G01R 1900

Patent

active

040074145

ABSTRACT:
A current transducer arrangement for detecting the magnitude and the polarity of a large current, wherein at least three current transducers and a majority circuit are comprised, each of the current transducers including a primary winding, a saturable core, a secondary winding magnetically coupled with the primary winding through the saturable core, a resistor, and having an alternating voltage supplied to the secondary winding, wherein the primary windings of the current transducers are connected in series, the large current flowing through the series-connected primary windings, wherein the alternating voltages to be supplied to the secondary windings of the current transducers are respectively different in phase, and wherein the majority circuit provides an output voltage proportional to an output voltage value occupying the greatest number of the current transducers. The current transducer arrangement can detect a D.C. current of a transmission system or an A.C. current containing a D.C. component in electrical isolation therefrom in a response time in the order of microseconds.

REFERENCES:
patent: 2950438 (1960-08-01), Gilbert
patent: 3136948 (1964-06-01), Windsor
patent: 3500195 (1970-03-01), Specht
patent: 3916310 (1975-10-01), Stark et al.

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