Patent ID: 9417273
Filing Date: 2016-08-16
CPC Classification: G01R

Claim Text:
1. An asynchronous AC measurement system comprising: an isolated current channel converter that transforms a current applied to the input by a power signal to a current within a predetermined range and digitizes said current; an isolated voltage channel converter that transforms a voltage applied to the input by the power signal to a voltage within a predetermined range and digitizes said voltage; a digital analyzer comprising at least a microprocessor that processes said digital representations of at least one of the voltage and current of the input signal to determine at least one of a parameter of the input signal and a power quality parameter of the input signal; wherein determining at least one of the power of the power signal and a power quality parameter of the power signal comprises at least one of: processing said digital representations of the voltage and current of the power signal for a predetermined measurement period; and determining at least one of current, voltage, power, phase angle, and impedance; and wherein the predetermined measurement period is established for power signals below a predetermined frequency in dependence upon at least a predetermined reference level.