Submarine equipment and fault locating method for a submarine co

Details Submarine equipment and fault locating method for a submarine co Submarine equipment and fault locating method for a submarine co

1993-09-30

1995-08-29

Regan, Maura K.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324519, 379 30, 361111, G01R 3102

Patent

active

054463920

ABSTRACT:
A fault locating method and submarine equipment for detecting the location of a fault developed in a communication system including an optical submarine cable and submarine equipment such as repeaters and branching units inserted in the cable, which is supplied with operating current via a feed line of the cable. The submarine equipment has a main processing circuit for transmitting signals via the submarine cable; an power unit inserted in the feed line so as to supply operating power for the main processing circuit by receiving the operating current from the feed line; a nonlinear resistance device which is connected to the feed line and the resistance value of which increases as a current flowing through it decreases, and a charging/discharging resistor disposed in parallel to the nonlinear resistance device. The fault locating method detects the location of an open-circuit fault occurring in the cable by measuring the capacitance of the open-circuit cable. The capacitance measurement is quickly and accurately carried out by charging and discharging the cable capacitance through the charging/discharging resistor.

REFERENCES:
patent: 4183225 (1979-07-01), Stephens
patent: 4438477 (1984-03-01), Cauley
patent: 4459631 (1984-07-01), McNamec
patent: 4748652 (1988-05-01), Nagai
patent: 4820991 (1989-04-01), Clark
patent: 5073920 (1991-12-01), Masukawa
patent: 5136453 (1992-08-01), Billingsley
patent: 5162963 (1992-11-01), Washburn et al.
patent: 5198957 (1993-03-01), Welty
Oct. 1972 KDD Tech J. (Japan) No. 74 Yamamura et al. An Open Fault localization Test set for Ocean Cable.

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