Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Patent
1986-03-17
1988-03-01
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
For fault location
324133, 340550, 340552, 364483, G01R 3108, G08B 2300
Patent
active
047288981
ABSTRACT:
A low-cost transmission line fault detector visually indicates the nature and location of transmission line failures. A current detection circuit inductively coupled to the transmission line produces an output signal when current is flowing through the line. A voltage detection circuit directly coupled across the transmission line monitors the relative potential across the line and produces an output signal when the relative potential is within predefined limits. By observing the states of the outputs of the current and voltage detection circuits (e.g., through visual indications provided by light emitting diodes), one can tell if the transmission line has shorted or open-circuited, and if it has, the location of the failure (e.g., between the source and the detector coupling point or between the detector coupling point and the load).
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The Radio Amateur's Handbook, American Radio Relay League 1977, p. 584.
Eisenzopf Reinhard J.
Harvey Jack B.
Staley Electric Co., Inc.
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