Title :
Low-Frequency Quantum-Based AC Power Standard at NRC Canada
Author_Institution :
Nat. Res. Council of Canada, Ottawa, ON, Canada
Abstract :
A low-frequency AC power standard based on the programmable Josephson voltage standard (PJVS) has been developed at the National Research Council of Canada. At the step voltages, PJVS provides quantum accuracy. Differential digital sampling is used to extend the quantum accuracy to the AC power standard output voltage and current, nominally 120 V and 5 A. The paper describes the power standard and its evaluation.
Keywords :
convertors; voltage dividers; voltage measurement; CT-based I-V converter; NRC Canada; National Research Council of Canada; PJVS; differential digital sampling; high-accuracy current scaling; low-frequency quantum-based AC power standard; programmable Josephson voltage standard; quantum accuracy; two-stage IVD; two-stage inductive voltage divider; Current measurement; Magnetic cores; Resistors; Standards; Uncertainty; Voltage measurement; Windings; AC power standard; calibration; current transformers; inductive voltage dividers (IVDs); programmable Josephson voltage standard;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2013.2240952
