Power feed circuit for use in a submarine cable branching unit

Details Power feed circuit for use in a submarine cable branching unit Power feed circuit for use in a submarine cable branching unit

1995-01-17

1997-07-01

Fleming, Fritz

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

307 38, H01H 4722

Patent

active

056444664

ABSTRACT:
A submarine cable branching system includes a plurality of directional relays in respective power feed paths branched at a common node, each of the directional relays being energized by a current flowing through the power feed path in a predetermined direction for energizing a corresponding switch provided in a different power feed path to establish a bilateral feed path and further a unilateral feed path, wherein there is provided a bypassing switch across one of the switches that forms the bilateral feed path, such that the bypassing switch is urged to close in response to energization of a self-sustaining relay provided in the unilateral feed path.

REFERENCES:
patent: 4798969 (1989-01-01), Inoue et al.
patent: 5196984 (1993-03-01), Webb
patent: 5214312 (1993-05-01), Inoue
patent: 5334879 (1994-08-01), Inoue et al.

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