Title :
Direct-reading absolute calibration of ac voltage ratio standards
Author :
Callegaro, L. ; Bosco, G.C. ; D´Elia, Vincenzo ; Serazio, D.
Author_Institution :
Electr. Metrol. Dept., Ist. Elettrotecnico Nazionale Galileo Ferraris, Torino, Italy
Abstract :
A new system for ac voltage ratio absolute calibration has been developed at IEN. The voltage ratio is maintained with a new one-decade, two-stage inductive voltage divider. The setup for ratio self-calibration is based on the simplest possible application of the bootstrap method: during the step-up the voltage differences are directly read with a vector voltmeter having an extremely high ac common-mode rejection ratio (CMRR).
Keywords :
bootstrap circuits; calibration; measurement standards; voltage dividers; voltage measurement; voltmeters; AC voltage ratio standard; bootstrap method; common-mode rejection ratio; direct-reading absolute calibration; inductive voltage divider; self-calibration; vector voltmeter; Calibration; Metrology; Optical fibers; Optical reflection; Power transformer insulation; Stability; Time measurement; Voltage; Voltmeters; Wounds;
Conference_Titel :
Precision Electromagnetic Measurements, 2002. Conference Digest 2002 Conference on
Conference_Location :
Ottawa, Ontario, Canada
Print_ISBN :
0-7803-7242-5
DOI :
10.1109/CPEM.2002.1034822
