Apparatus and method for programmable trip settings in a...

Details Apparatus and method for programmable trip settings in a... Apparatus and method for programmable trip settings in a...

2007-09-18

2007-09-18

Nguyen, Vinh P. (Department: 2829)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With coupling means

C324S126000, C324S11700H

Reexamination Certificate

active

10988007

ABSTRACT:
A fault indicator for indicating the occurrence of a fault in an electrical conductor is programmable, such as in the field, by placing a magnet in proximity to the housing of the fault indicator. A data processor senses the changed state of a magnetic switch and, after a predetermined delay, initiates a programming routine to enable selection of one of a plurality of trip settings for the fault indicator. During programming, display LEDs flash once for programming of the first trip setting, twice for setting of the second trip setting, and so forth. Removal of the magnet from proximity to the fault indicator while at the desired trip setting will result in programming of the fault indicator to that trip setting.

REFERENCES:
patent: 4794332 (1988-12-01), Schweitzer, Jr.
patent: 6777953 (2004-08-01), Blades

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