System and a protection and remote power-feeding device for equipment connected by two transformers to a four-wire transmission link
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United States of America Patent
Stats
-
Aug 28, 1990
Grant Date -
N/A
app pub date -
Sep 9, 1988
filing date -
Sep 9, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A remote power-feeding and protection system for equipment connected by two transformers to a four-wire transmission link. The remote power-feeding and protection system and the remote power-feeding extractor protection device are intended for equipment connected by two transformers to a transmission link with two pairs of wires ensuring remote power-feeding of the fed equipment. Each transformer is connected to the two wires of one pair by two identical windings serially-connected between these two wires through a capacitor. The two pairs of wires constitute a phantom feed circuit, the two wires of a given pair being connected to the same terminal of a D.C. generator. The extraction and protection device comprises two rectifier bridges each separately connected by their inputs to a pair of wires and interconnected by their outputs in order to provide remote power feeding.
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