Title :
PTB - UNIIM bilateral comparison on current transformer measurement systems at currents up to 60 000A
Author :
Mohns, E. ; Sychev, Y. ; Roeissle, G.
Author_Institution :
Phys.-Tech. Bundesanstalt (PTB), Braunschweig, Germany
Abstract :
This paper presents the results of a bilateral comparison of current transformer measurement systems at 50 Hz between PTB (pilot laboratory) and UNIIM. The comparison is registered at COOMET with the identifier 513/DE-a/10. The comparison of the systems using two two-stage current transformers from UNIIM and the data processing have been finished. The results agree within 6 μA / A for the current ratio errors and 8 μrad for the phase displacements at all current ratios from 1 A / 1 A to 50 kA / 5 A and at all test points from 1 % to 120 %. The associated EN factors are below 0.6.
Keywords :
current transformers; instrument transformers; measurement systems; phase measurement; COOMET; PTB; UNIIM; current ratio error; current transformer; data processing; frequency 50 Hz; measurement system; phase displacement; Current measurement; Current transformers; Frequency measurement; Measurement uncertainty; Standards; Uncertainty; Windings; current transformers (CT); instrument transformers; phase displacement; ratio error;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6250637
