Stepping up AC-DC current up to 20 A

Stepping up AC-DC current up to 20 A

This paper describes the AC/DC current stepping up arrangement and results at the National Metrology Centre (NMC). Planar multi-junction thermal converters (PMJTCs) were used with a set of coaxial current shunts to build up the AC-DC current transfer standards for the range from 10 mA to 20 A at fre...

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Bibliographische Detailangaben
Hauptverfasser: Jing, T., Chua, S.W., Sim, J., Ma, C.H.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Analog-digital conversion
Calibration
Coaxial components
Current measurement
Frequency conversion
Measurement standards
Metrology
Stress measurement
Testing
Voltage
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Beschreibung
Zusammenfassung:This paper describes the AC/DC current stepping up arrangement and results at the National Metrology Centre (NMC). Planar multi-junction thermal converters (PMJTCs) were used with a set of coaxial current shunts to build up the AC-DC current transfer standards for the range from 10 mA to 20 A at frequency range of 10 Hz to 100 kHz. Current level-dependence of the PMJTCs at low frequencies was determined experimentally. The resulted AC-DC differences agree well with known calibration with expanded uncertainties of less than 55 muA/A at 20 A for frequencies from 10 Hz to 100 kHz.
ISSN:0589-1485
2160-0171
DOI:10.1109/CPEM.2008.4574800