Current sensing

Details Current sensing Current sensing

1988-11-29

1991-05-07

Williams, Hezron E.

Communications: electrical

Condition responsive indicating system

Specific condition

340650, 324529, G01R 3102, G01R 1900

Patent

active

050140434

ABSTRACT:
A current sensing device particularly for rotor ground fault detection in a highly inductive field is able to sense and identify the location of low order fault current when the load current in conductors is on the order of at least 1,000 amperes. Laminated strips of magnetic material are flexible to be located ideally about the conductors to maximize the sensitivity signal and minimize the effect of electromagnetic radiation. The current sensor includes three sets of laminations, the central laminations being for magnetization sensing, the inner laminations being for magnetic filtering, and outer laminations being for magnetic shield. Magnetic separation exists between each lamination set. Electrical insulation is located about the inner and outer sets.

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