Water-compensated open fault locator

Details Water-compensated open fault locator Water-compensated open fault locator

1981-10-16

1983-10-18

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

1791753F, G01R 3108, H04B 346

Patent

active

044108508

ABSTRACT:
Apparatus, and associated methodology, for testing an open in a pair from a shielded, multipair cable contaminated by water to correct the measured distance to the open from a measurement point and thereby obtain the true distance comprises: means (501) for applying an AC source (100) to the mate (101) of the open conductor (102); means (503,504) for detecting the resultant voltage induced on the open conductor through the capacitive coupling effects of the pair; and means (510) for determining the percentage length of the pair affected by water from the source and resultant voltages and for estimating the true distance by correcting the measured distance as a function of this percentage.

REFERENCES:
patent: 2932970 (1960-04-01), Zito
patent: 3234459 (1966-02-01), Brazee
patent: 3248646 (1966-04-01), Brazee
Maloney: "Locating Cable Faults"-IEEE Trans. on Industry Appl.-vol. IA-9, No. 4-Jul. 1973-pp. 380-394.

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