Current limiting apparatus utilizing multiple resistive parallel

Details Current limiting apparatus utilizing multiple resistive parallel Current limiting apparatus utilizing multiple resistive parallel

1984-07-20

1986-07-01

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Impedance insertion

338 13, 338 20, 338176, H02H 902, H02H 908

Patent

active

045983321

ABSTRACT:
A current limiting apparatus includes at least two pairs of generally parallel conductive rails each having an initial high conductivity portion and a more resistive portion. A sliding armature conductor is positioned between each pair of rails and makes sliding electrical contact with the rails such that a high fault current flowing through the rails and the associated armature conductor produces forces which propel the armature conductor along the rails thereby increasing the resistance through which current flows. The pairs of rails are geometrically associated such that current flowing in each pair of rails augments the accelerating force on the armature conductor located between the other pair of rails. Additional accelerating force augmenting may be provided by a multiple turn coil located near the high conductivity portions of the rails.

REFERENCES:
patent: 4347463 (1982-08-01), Kemeny et al.
patent: 4433608 (1984-02-01), Deis et al.

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