KRISS-NRC Intercomparisons of Calibration Systems for Instrument Transformers With Many Different Ratios at Power Frequency
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Bibliographic record
Abstract
An intercomparison of the calibration systems for instrument transformers between the Korea Research Institute of Standards and Science (KRISS) and the National Research Council of Canada (NRC), with many different ratios at 60 Hz, was performed using six portable transfer standards. The portable transfer standards consist of two current transformers (CTs) with current ratios of 5 A/5 A up to 20 000 A/5 A and four voltage transformers (VTs) with voltage ratios of 110 V/110 V up to 66 000 V/110 V. The comparison results for the CT calibration systems between the two institutes are in good agreement within 10times10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-6</sup> for ratio and 10 murad for phase for all the current ratios. The comparison results for the VT test systems also indicated good agreement within 35times10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-6</sup> for ratio and 35 murad for phase for all voltage ratios.
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Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
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