Title :
Characterization of AC-DC transfer shunts up to 100 A at 100 kHz using two-stage, amplifier-aided current transformers
Author :
Kinard, Joseph ; Laug, Owen ; Waltrip, Bryan ; Lipe, Thomas
Author_Institution :
Quantum Meas. Div., Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
Abstract :
We describe the construction of two-stage, amplifier-aided current transformers (CTs) and their use to characterize AC-DC transfer shunts up to 100 A at 100 kHz. Tests show that the frequency coefficients of the CTs have small changes with current level. This level independence of the frequency coefficients for the CTs is used to characterize the frequency coefficients of the shunts up to 100 A and out to 100 kHz in terms of measurements at 20 A.
Keywords :
amplifiers; current transformers; AC-DC transfer shunt characterization; current 20 A; frequency 100 kHz; frequency coefficient level independence; two-stage amplifier-aided current transformers; Current measurement; Current transformers; Frequency measurement; Magnetic cores; NIST; Uncertainty; AC-DC; Current; Shunt; Transfer; Transformer;
Conference_Titel :
Instrumentation and Measurement Technology Conference (I2MTC), 2012 IEEE International
Conference_Location :
Graz
Print_ISBN :
978-1-4577-1773-4
DOI :
10.1109/I2MTC.2012.6229133
