Electricity: electrical systems and devices – Safety and protection of systems and devices – Feeder protection in distribution networks
Reexamination Certificate
2000-03-31
2002-06-18
Tso, Edward H. (Department: 2838)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Feeder protection in distribution networks
Reexamination Certificate
active
06407896
ABSTRACT:
FIELD OF THE INVENTION
This invention relates in general, to electronics, and more particularly, to power systems and their methods of operation.
BACKGROUND OF THE INVENTION
Highly reliable power systems have a redundant power input cable and a redundant power supply. These power systems may monitor the power supplies to determine when the redundant power supply is needed to keep the power system operational. However, these highly reliable power systems do not determine or monitor whether or when the redundant power input cable is needed to keep the power system operational. Accordingly, a need exists for a power system and method of operation having the capability to monitor incoming power and to indicate when the redundant power input cable is in use.
REFERENCES:
patent: 4983955 (1991-01-01), Ham et al.
patent: 6195243 (2001-02-01), Spencer et al.
Hill Charles C.
Kelly John H.
Loutfy Kevin
Naufel Naufel Chafic
Pickens Scott Kevin
Tibbits Pia
Tso Edward H.
Wills Kevin D.
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