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US 4,357,598 AGranted
Three-phase power distribution network communication system
AssigneeWestinghouse Electric Corp.
InventorWaymon A. Melvin, Jr.
Life of this patent
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AssigneeWestinghouse Electric Corp.
InventorWaymon A. Melvin, Jr.
Estimating the term…
A communication system for a three-phase power distribution network is comprised of a plurality of remote devices, with certain of the remote devices being used as signal repeaters. Injection point circuitry provides an out-going communication signal which is coupled to the three-phase conductors such that each phase conductor carries an identical, independent, outgoing communication signal. The signal repeaters are each coupled to at least two of the three-phase conductors. Each signal repeater includes circuitry for producing a composite signal in response to the coupled signals. The composite signal has a signal-to-noise ratio typically superior to, but not worse than, the signal-to-noise ratio of the best of the coupled signals. The remainder of the remote devices are independently coupled to at least one of the three-phase conductors so as to facilitate communication with each of the remote devices.
A communication system for a three-phase power distribution network, comprising:
Dependencies are inferred from the claim text.