Technique for independent ground fault detection of multiple...

Details Technique for independent ground fault detection of multiple... Technique for independent ground fault detection of multiple...

2006-02-22

2010-06-08

Briney, III, Walter F (Department: 2614)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Digital audio data processing system

C379S399010

Reexamination Certificate

active

07734363

ABSTRACT:
A method and apparatus detects a ground fault on a span-powered telecommunication wireline within a plurality of span-powered wireline segments, to respective ones of which DSL-Cs are coupled, so that a ground fault may be detected when power is delivered by the DSL-C over a respective wireline segment to a respective downstream functional RT. A respective DSL-C measures a first voltage across a first sense resistor representative of current flowing in a first portion of its wireline segment to the RT, and also measures a second voltage across a second sense resistor representative of current flowing in a second portion of the wireline segment from the RT. In response to a difference in the first and second voltages an output representative of a ground fault in that wireline segment is generated.

REFERENCES:
patent: 4385336 (1983-05-01), Takeshita et al.
patent: 7508930 (2009-03-01), Smith et al.
patent: 2004/0240665 (2004-12-01), Phillips et al.

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