Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Demand – excess – maximum or minimum
Patent
1984-04-12
1986-07-01
Myracle, Jerry W.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Demand, excess, maximum or minimum
324 74, G01R 1164, G01R 3504
Patent
active
045982481
ABSTRACT:
An electronic demand register performs rolling demand metering in which a demand interval is divided into N subintervals. At the end of each subinterval, the demand data from the just-completed subinterval is summed with the demand in the most-recent N-1 contiguous subintervals to derive an interval demand. A test operation is provided in which the stored maximum demand, a number representing the remainder of the subinterval interrupted by the test and programmed constants are stored in non-volatile memory but are also retained in the processor for use during test. A test reset switch resets accumulated demand data and presets the subinterval timer to predetermined values from which they may be operated by a calibrated test load to confirm the performance of the demand register. At the end of testing, all data in the processor is zeroed and the data stored in non-volatile memory is restored. Demand metering is resumed starting with the remainder of the interrupted subinterval and with the demand from the N-1 prior subintervals set to zero.
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Baker Stephen M.
Brunson Robert E.
General Electric Company
Morrison Thomas R.
Myracle Jerry W.
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