Multi-phase failure detector

Details Multi-phase failure detector Multi-phase failure detector

1981-06-08

1983-07-12

Eisenzopf, Reinhard J.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

361 85, 361 62, H02H 324

Patent

active

043934307

ABSTRACT:
Phase line currents of a polyphase power supply are rectified and applied to a common input terminal of a sine wave detector circuit to sense the presence of a signal current that is injected from a low voltage DC source into any time gaps that are formed between phase currents only when one or more phase line failures occur. Failure of the DC source disables the detector circuit.

REFERENCES:
patent: 3313984 (1967-04-01), Hupp
patent: 3343038 (1967-09-01), Johnson
patent: 3636541 (1972-01-01), Genuit et al.

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