Combined fault and voltage indicator

Details Combined fault and voltage indicator Combined fault and voltage indicator

1979-06-25

1981-02-17

Moore, David K.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Nonquantitative

324 52, 340654, G01R 1914

Patent

active

042517702

ABSTRACT:
A combined fault and voltage indicator includes a rotatably-mounted target viewable from the exterior of the indicator for indicating the occurrence of a fault and a lamp viewable from the exterior of the indicator for indicating system operating voltage. The target is positioned in a reset-indicating state by a reset circuit which periodically energizes a first winding to position a permanent magnet mounted for rotation with the target. Upon occurrence of a fault circuitry within the indicator energizes a second winding to reposition the target to a fault-indicating position. The lamp is caused to flash at a rate which indicates the operating voltage of the system.

REFERENCES:
patent: 3443158 (1969-05-01), Arndt
patent: 3639833 (1972-02-01), Tachick
patent: 3676740 (1972-07-01), Schweitzer, Jr.
patent: 3906477 (1975-09-01), Schweitzer, Jr.
patent: 4063171 (1977-12-01), Schweitzer, Jr.
patent: 4152643 (1979-05-01), Schweitzer, Jr.

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