Cable fault detector
First Claim
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1. An apparatus for locating on an optical fiber cable a fault where a cable locating current is leaking to ground, the apparatus comprising:
- a body adapted to be positioned adjacent the cable;
at least one voltage probe mounted in the body and positioned in the body to probe the leaking cable locating current;
a reference voltage input for receiving a reference voltage; and
a voltage comparator electrically connected to the at least one voltage probe and to the reference voltage input, the comparator configured for measuring a test voltage between the reference voltage and the at least one voltage probe.
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Abstract
The present invention is a apparatus and method for accurately finding a location of a fault in a fiber cable where a cable locating current is leaking to ground. The system includes a sensor body, voltage probes mounted in the body to face the cable, a reference voltage input and a voltage comparator that compares the reference voltage to a measured voltage at the probes. Use of the system may include applying a conductive medium such as a conductive gel between the probes and the cable.
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Citations
19 Claims
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1. An apparatus for locating on an optical fiber cable a fault where a cable locating current is leaking to ground, the apparatus comprising:
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a body adapted to be positioned adjacent the cable;
at least one voltage probe mounted in the body and positioned in the body to probe the leaking cable locating current;
a reference voltage input for receiving a reference voltage; and
a voltage comparator electrically connected to the at least one voltage probe and to the reference voltage input, the comparator configured for measuring a test voltage between the reference voltage and the at least one voltage probe. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for locating on a cable a fault where a cable locating current is leaking to ground, the method comprising the steps of:
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positioning a voltage probe adjacent the cable;
applying a conductive medium between the cable and the voltage probe;
displacing the voltage probe along the cable;
measuring a voltage between the voltage probe and a reference voltage; and
based on the voltage, detecting the fault at a position of the voltage probe along the cable. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification