Accession Number : ADD015096

Title :   Cable Fault Location Detector.

Descriptive Note : Patent, Filed 24 Oct 90, patented 22 Oct 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Huber, Carl H

Report Date : 22 Oct 1991

Pagination or Media Count : 9

Abstract : Apparatus and method for detecting a location of a break in a conductor of a cable, the cable having a multiple number of conductors. The conductors that are not under investigation are connected to ground potential. The conductor that is under investigation is connected to a timer, a resistor, and a DC voltage source that in turn is connected to ground potential. Charging current flows into the conductor under investigation. The time that it takes for the current to decrease to (1/e) of the current's initial value is measured by the timer. Alternately, the conductor that is under investigation is connected to a resistor and a DC voltage source that in turn is connected to ground potential. This conductor is also connected to a voltage level timer that is connected to ground potential. The charging voltage of the conductor increases. The time that it takes for the charging voltage to increase to 1 - 1/e) of the voltage value of the DC voltage source, is measured by the timer. The length of a measured time is indicative of the distance of a break from the DC voltage source. (Author)

Descriptors :   CABLES, DETECTORS, DIRECT CURRENT, ELECTRIC CONDUCTORS, FAULTS, FLOW, GROUND LEVEL, POSITION(LOCATION), RESISTORS, SOURCES, TIMING DEVICES, VOLTAGE

Subject Categories : Test Facilities, Equipment and Methods
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE