DocumentCode
107869
Title
On the Calibration of Direct-Current Current Transformers (DCCT)
Author
Callegaro, L. ; Cassiago, C. ; Gasparotto, E.
Author_Institution
Electromagn. Div., Ist. Naz. di Ricerca Metrol., Turin, Italy
Volume
64
Issue
3
fYear
2015
fDate
Mar-15
Firstpage
723
Lastpage
727
Abstract
Modern commercial dc current transformers (DCCTs) can measure currents up to the kiloampere range with accuracies better than 1 × 10-5. We discuss here a DCCT calibration method and its implementation with commercial instruments typically employed in low-resistance calibration laboratories. The primary current ranges up to 2 kA; in the current range <;100 A, the calibration uncertainty is better than 3 × 10-7. An example of calibration of a high-performance DCCT specified for primary currents measurement up to 900 A is discussed in detail.
Keywords
calibration; current transformers; electric current measurement; measurement uncertainty; DCCT; calibration uncertainty; direct-current current transformer; low-resistance calibration laboratory; primary current measurement; Accuracy; Calibration; Current measurement; IP networks; Integrated circuits; Standards; Windings; Calibration; current measurement; magnetic sensors; metrology; transducers; transducers.;
fLanguage
English
Journal_Title
Instrumentation and Measurement, IEEE Transactions on
Publisher
ieee
ISSN
0018-9456
Type
jour
DOI
10.1109/TIM.2014.2359812
Filename
6923460
Link To Document