Ground fault protection system for multiple source distribution

Details Ground fault protection system for multiple source distribution Ground fault protection system for multiple source distribution

1977-09-02

1978-08-29

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

361 48, 361 64, 361 87, H02H 328

Patent

active

041108086

ABSTRACT:
Various embodiments of a ground fault protection system are disclosed for protecting a multiple source distribution network consisting of at least two sources having their neutral points interconnected by main neutral and tie neutral bus and also typically by separate ground connections. The system operates to selectively trip a ground fault circuit interrupter by distinguishing between normal neutral loading regardless of the routes taken by neutral currents in returning to the sources and a ground fault regardless of the routes taken by ground fault currents in returning to the source feeding the fault.

REFERENCES:
patent: 3259802 (1966-07-01), Steen
patent: 3675080 (1972-07-01), Bath
patent: 3949272 (1976-04-01), Smith
patent: 4068275 (1978-01-01), Teel et al.

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