Cable Fault Location Detector.
Patent, Filed 24 Oct 90, patented 22 Oct 91,
DEPARTMENT OF THE NAVY WASHINGTON DC
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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 1e of the currents 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 - 1e 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
- Test Facilities, Equipment and Methods
- Electrical and Electronic Equipment