Energy meter with instrumentation systems and methods
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United States of America Patent
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Apr 16, 2002
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N/A
app pub date -
Nov 30, 1998
filing date -
Oct 22, 1996
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Abstract
A system for monitoring near-instantaneous system parameters of electrical energy having at least one phase provided to an energy meter via a service type comprises a memory for storing reference information reflective of different service types, a digital signal processor for measuring characteristics of the electrical energy, and a microcontroller for retrieving the reference information from the memory and determining the near-instantaneous system parameters responsive to the reference information for the service type and the measured characteristics. The characteristics are derived from phase voltage and phase current, and are measured for a predetermined amount of time, such as a number of line cycles.
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