Line fault monitoring apparatus

Details Line fault monitoring apparatus Line fault monitoring apparatus

1996-09-05

1997-05-20

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Series connected sections with faulty section disconnect

361 67, 361 62, 361 93, 340650, 340635, H02H 726

Patent

active

056317956

ABSTRACT:
The present invention relates to a line fault monitor for detecting a short circuit in a terminal-side loop line and disconnecting the short-circuit portion from a power supply, so that the position of the short circuit can easily be specified. The line fault monitor includes at least one of a mid-point line monitoring device and a beginning/end line monitoring device. The mid-point line monitoring device has a first fault indicator lamp for indicating a fault in a line connected to one terminal, and a second fault indicator lamp for indicating a fault in a line connected to the other terminal. The beginning/end line monitoring device in the side of a receiver has a first fault indicator lamp for indicating a fault in a line connected to a beginning terminal, a second fault indicator lamp for indicating a fault in a line connected to an end terminal, and a representative fault indicator lamp for representatively indicating a fault in any one of the lines connected to the beginning and the end terminals.

REFERENCES:
patent: Re28958 (1976-09-01), Zafiropulo et al.
patent: Re34643 (1994-06-01), Payne
patent: 3652798 (1972-03-01), McNeilly et al.
patent: 3686531 (1972-08-01), Decker et al.
patent: 4752698 (1988-06-01), Furuyama et al.
patent: 5097259 (1992-03-01), Testa et al.

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