Magnetic flux concentrator shield for use in overload relay

Details Magnetic flux concentrator shield for use in overload relay Magnetic flux concentrator shield for use in overload relay

1999-03-12

2000-09-19

Gellner, Michael L.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335 8, 335155, 335177, 335174, 335202, 361 42, 361 44, 361 46, 361102, 324127, 336175, H01H 7500, H01H 7700, H01H 8300, H01H 7110, H01H 7120

Patent

active

061218626

ABSTRACT:
A magnetic flux concentrator shield is disclosed for use with magnetic flux sensors in an overload relay for multiple pole electromagnetic contactor applications. The magnetic flux concentrating shield has slotted layers of laminated members. The layers have a series of pole shielding slots which concentrate magnetic flux generated by conductors carrying current through conductor apertures in each layer. Magnetic flux sensors are positioned within air gaps within each pole of the shield. By shielding the generated magnetic flux from reaching the magnetic flux sensor of another pole, the pole shielding slots minimize cross pole magnetic flux sensor interference.

REFERENCES:
patent: 4934042 (1990-06-01), Bush
patent: 5043616 (1991-08-01), Katsuzawa et al.

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