Title :
Calibration of non-conventional instrument transformers
Author :
Crotti, G. ; Giordano, D. ; Cherbaucich, C. ; Mazza, P.
Author_Institution :
Ist. Naz. di Ricerca Metrol., Torino, Italy
Abstract :
The paper focuses on the calibration techniques of non-conventional voltage and current measurement transformers. Calibration circuits set up at INRIM are described, which makes use of digital acquisition and numerical analysis of the transducer output. Examples of calibration of non-conventional instruments to be used as on-site references are discussed, which include a system based on Rogowski coil for live-on-site check of measuring current transformers with rated voltages up to 380 kV.
Keywords :
calibration; electric current measurement; numerical analysis; transducers; transformers; voltage measurement; INRIM; Rogowski coil; calibration circuits; current measurement transformer live-on-site check; digital acquisition; nonconventional current measurement transformer calibration techniques; nonconventional instrument transformer calibration techniques; nonconventional voltage measurement transformer calibration techniques; numerical analysis; on-site references; transducer output; Calibration; Current measurement; Current transformers; Instrument transformers; Optical sensors; Uncertainty; Voltage measurement; Calibration; High voltage.; measurement standards; measurement uncertainty; non-conventional instrument transformers;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6251051
