Programmable time registering ac electric energy meter...

G - Physics – 01 – R

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G01R 21/00 (2006.01) G01R 21/133 (2006.01) G04G 15/00 (2006.01)

Patent

CA 1129964

56 47,904 ABSTRACT OF THE DISCLOSURE An AC electric energy meter includes a metering sequence logic control circuit for receiving pulses re- sponsive to an AC energy quantity to be measured. Elec- tric energy parameters are measured by the control circuit as it concurrently registers clock time and calendar data. A programmable rate selection table controls variable time intervals for accumulating different parameters during predetermined daily time measuring categories correspond- ing to different billing rates. The rate selection table includes plural rate switch control points defining daily measuring times nominally on a day of the week basis. A programmable yearly date code table designates days during the year for still different daily code times. The mea- sured parameters are stored in separate electronic regis- ters so as to have coded values of kilowatthours and/or kilowatt demand for direct electronic display in a multi- plexed and reoccurring sequential order.

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