On the calibration of direct-current current transformers
| Autor: | Callegaro, Luca, Cassiago, Cristina, Gasparotto, Enrico |
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| Rok vydání: | 2014 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1109/TIM.2014.2359812 |
| Popis: | Modern commercial direct-current current transformers (DCCT) can measure currents up to the kA range with accuracies better than 1E-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 below \SI{100}{\ampere} the calibration uncertainty is better than 3E-7. An example of calibration of a high-performance DCCT specified for primary currents measurement up to 900 A is discussed in detail. Comment: Accepted for publication in IEEE Trans. Instr. Meas. Copyright IEEE |
| Databáze: | arXiv |
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