Current limiting devices utilizing resistive parallel rails

Details Current limiting devices utilizing resistive parallel rails Current limiting devices utilizing resistive parallel rails

1984-07-20

1986-07-08

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

045996717

ABSTRACT:
A current limiting apparatus is provided with a pair of generally parallel conductive rails each including an initial high conductivity portion and a more resistive portion. A sliding armature conductor is positioned between the rails and makes sliding electrical contact with the rails such that a high fault current flowing through the rails and through the armature conductor produces forces which propel the armature conductor along the rails thereby increasing the resistance through which the current flows. Final interruption of the current is accomplished by a separate circuit breaker which is connected in series with the current limiting apparatus.

REFERENCES:
patent: 3978300 (1976-08-01), Slade
patent: 4077025 (1978-02-01), Slade et al.
patent: 4347463 (1982-08-01), Kemeny et al.
patent: 4433608 (1984-02-01), Deis et al.

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