Data and/or energy transmission device with a disconnecting unit

Details Data and/or energy transmission device with a disconnecting unit Data and/or energy transmission device with a disconnecting unit

1998-12-29

2000-10-31

Ballato, Josie

Electricity: electrical systems and devices

Safety and protection of systems and devices

Series connected sections with faulty section disconnect

361 59, 700 59, 340660, H02H 300

Patent

active

061411957

ABSTRACT:
Short-circuits are liable to occur between the two conductors in a system in which data and/or energy is transmitted to a plurality of receivers/users via two conductors. Transmission is then interrupted and the supply source is inadmissibly over-loaded. The invention provides disconnecting units which recognize occurrence of short-circuits between the conductors and, in response thereto, isolate the part of the system in which the short-circuit has occurred from the supply of data and/or energy, so that the remainder of the system remains operational. After removal of the short-circuit, the isolated part is automatically re-connected to the system. The potential on the conductors ahead of and following a disconnecting unit is monitored via current limiting circuit elements which bridge a switch in the disconnecting unit. One or more monitoring units in a disconnecting unit sense the potential of the conductors and based thereon determine whether to render the switch in such disconnecting unit conductive or non-conductive.

REFERENCES:
patent: 4638175 (1987-01-01), Bradford et al.
patent: 4752698 (1988-06-01), Furuyama et al.
patent: 4831484 (1989-05-01), Bruch
patent: 5170310 (1992-12-01), Studtmann et al.
patent: 5654859 (1997-08-01), Shi

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