Ground-fault protective scheme for multiple-source electric dist

Details Ground-fault protective scheme for multiple-source electric dist Ground-fault protective scheme for multiple-source electric dist

1974-11-19

1976-04-06

Miller, J. D.

317 27R, 317 28R, H02H 328

Patent

active

039492729

ABSTRACT:
A ground-fault protective scheme for a three-phase electric distribution system that comprises two sources having neutral points that are interconnected by a neutral conductor and a separate ground connection for each neutral point located at or near the neutral point. The protective scheme responds correctly to a ground fault even though the current resulting from such ground fault may return to its source through either of said ground connections and may distribute itself in any proportion between said ground connections.

REFERENCES:
patent: 2335103 (1943-11-01), Bolsterli
patent: 3223891 (1965-12-01), McClymont
patent: 3259802 (1966-07-01), Steen
patent: 3488559 (1970-01-01), Souillard
patent: 3721862 (1973-03-01), Brrennen

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