Calibration of instrument current transformers at low currents using lock-in amplifier
| Autor: | Karel Draxler, Renata Styblikova |
|---|---|
| Přispěvatelé: | Pinker, Jiří |
| Rok vydání: | 2017 |
| Předmět: |
Engineering
Accuracy and precision 02 engineering and technology Isolation amplifier lock-in zesilovač přístrojový proudový transformátor law.invention law 0202 electrical engineering electronic engineering information engineering Electronic engineering fázový posun Transformer Standby power kalibrace business.industry Amplifier 020208 electrical & electronic engineering Lock-in amplifier lock-in amplifier Electrical engineering calibration Current transformer instrument current transformer phase displacement poměrová chyba Measurement uncertainty ratio error business |
| Zdroj: | 2017 International Conference on Applied Electronics (AE). |
| Popis: | A system for evaluating instrument current transformer errors using a lock-in amplifier is described in the paper. The difference between the standard and the transformer under test is evaluated as the ratio error and the phase displacement. The attention is focused to measurement of errors at the range of primary currents less than 20% of the nominal value. The measurement accuracy of current and energy in smart grids is important particularly at the time when the majority of appliances are in the standby mode. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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