| Zugriffsnummer | 38680 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | An AC current transformer standard measuring system for power frequencies |
| Autor(in); Institution |
Mohns, Enrico; 2.3, Elektrische Energiemesstechnik, PTB-Braunschweig
Roeissle, Günter; 2.3, Elektrische Energiemesstechnik, PTB-Braunschweig
Fricke, Sören; 2.3, Elektrische Energiemesstechnik, PTB-Braunschweig
Pauling, Florian; 2.3, Elektrische Energiemesstechnik, PTB-Braunschweig
|
| Quelle/Jahr | Special section on the Conference on Precision Electromagnetic Measurements (CPEM) 2016. IEEE Transactions on Instrumentation and Measurement: 66 (2017), 6, 1433 - 1440 |
| ISSN | 0018-9456 (PRINT) ; 1557-9662 (ONLINE) |
| DOI | |
| Verlag | New York, NY: IEEE |
| Konferenzangaben | Conference on Precision Electromagnetic Measurements (CPEM) 2016, Ottawa, 10-15, July, 2016, Canada |
| Freie Schlagworte | bridge ; current comparator (CC) ; current transformer (CT) ; phase displacement ; ratio error ; voltage ratio |
| Zusammenfassung | This paper describes the design and setup of the new ac current transformer (CT) calibration system at Physikalisch-Technische Bundesanstalt, which uses enhanced, actively compensated current comparators (CCs) for rated primary currents from 5 A up to 60 kA, and a new CT bridge based on the differential method. The bridge makes use of modern, high-resolution analog-to-digital converters, and makes it possible to connect traditional CTs as well as two-stage CTs with rated secondary currents from 100 mA to 5 A. The lower current ranges are integrated to enable a calibration of CTs of the highest available precision for national power standards. The current transducers and the two-channel sampling system of the bridge allow a resolution of approximately 10-9, while the estimated Type B uncertainty of the bridge is around 10-8. |
