Fault indicator having a remote test point at which fault occurr

Details Fault indicator having a remote test point at which fault occurr Fault indicator having a remote test point at which fault occurr

1983-01-18

1984-07-03

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Nonquantitative

324 51, 340650, G01R 1912, G01R 3102

Patent

active

044581980

ABSTRACT:
A fault indicator for use in conjunction with components of a power distribution system contained within a protective enclosure includes a magnetic test point on the exterior surface of the enclosure for indicating the occurrence of a fault in associated circuits of the system. The fault indicator includes a circuit module mounted on a conventional test-point provided on one of the system components, and a magnetic indicator module mounted on the wall of the enclosure. The indicator module includes a magnetizable element which extends through the wall of the housing to provide a magnetic test point. Upon occurrence of a fault in the system, circuitry within the indicator module energizes a first winding in the indicator module to establish a magnetic state of a first polarity at the test point. Upon restoration of power, a reset circuit energizes a second winding to establish a magnetic state of opposite polarity at the test point. A portable test instrument comprising a hand held housing on which a magnetized flag member is rotatably mounted is positioned adjacent the magnetic test point by a lineman to determine circuit status.

REFERENCES:
patent: 3210750 (1965-10-01), Leonard
patent: 3406388 (1968-10-01), Phil
patent: 3480863 (1969-11-01), Hopengarten
patent: 3513354 (1970-05-01), Tachick
patent: 3657650 (1972-04-01), Arndt
patent: 3906477 (1975-09-01), Schweitzer, Jr.
patent: 3991366 (1976-11-01), Schweitzer, Jr.

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