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Sökning: WFRF:(Cayci T) > Draxler K.

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1.
  • Draxler, K., et al. (författare)
  • International comparison of current transformer calibration systems up to 10 kA at 50 Hz frequency
  • 2016
  • Ingår i: 2016 Conference on Precision Electromagnetic Measurements (CPEM 2016). - 9781467391344
  • Konferensbidrag (refereegranskat)abstract
    • Current transformers (CTs) are precision devices that scale high currents down to values that can be easily handled by measurement equipment. To support CT applications in revenue metering, a comparison on AC current transformer calibration systems was performed among 15 European national metrology institutes using a precision CT as the travelling device. The first comparison results for the transformation ratios (4, 5, 6, 8, 10) kA/5 A of the travelling CT at nominal burden of 5 VA and 15 VA indicate good agreement between the participating laboratories. The main differences are found for phase displacement, at least partly caused by the instability of the traveling standard.
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2.
  • Draxler, K., et al. (författare)
  • Results of an International Comparison of Instrument Current Transformers up to 10 kA at 50 Hz Frequency
  • 2018
  • Ingår i: CPEM 2018 - Conference on Precision Electromagnetic Measurements. - 9781538609736
  • Konferensbidrag (refereegranskat)abstract
    • Traceability of the current ratio is crucial for the measurement of electrical energy in revenue metering. A comparison of the AC current ratio was therefore performed within EURAMET in the time period 2012-2016, using a precision CT as the traveling device. The Czech Metrology Institute (CMI) as coordinator processed the measurement results of the 15 European participating laboratories. The comparison of the results for transformer ratios of (4, 5, 6, 8, 10) kA 5 A at 15 VA burden and (4 and 10) kA 5 A ratios at 5 VA burden indicates good agreement between the participating laboratories. The main differences are found for phase displacement, at least in part due to instability of the traveling standard. .
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