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KONCAR Electrical Engineering INSTITUTE tradition. knowledge. responsibility.

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| Automated transformer tests ATT features KONČAR – Electrical Engineering Institute, Inc. has developed a software for automated transformer tests (ATT). ATT enables different tests of power transformers, from simple to the most-complex, with high degree of automation. Due to the long-term experience of engineers on software development and to the cooperation with transformer factories and their test stations, the software can be modified to meet the requirements of test engineers and to adjust to test station measurement equipment. ATT leads test engineers through the measurements (it...

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tradition. knowledge. responsibility. Measurement, analysis and test reports Due to software modularity, any of the following measurements may be included in the software: »» measurement of winding resistance: »» U-I method and »» induced voltage correction method (IVCM) »» measurement of load losses, »» measurement of short circuit voltage, »» measurement of no-load losses, »» measurement of no-load current, »» measurement of high order harmonics of no-load current, »» measurement of zero-sequence impedance, »» temperature rise test, »» transformer turns ratio test, »» checking of vector...

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Measurement uncertainty and system accuracy The final product of ATT measurement and data analysis is a complete measurement result that consists of the best estimate of measured quantity and associated uncertainty. Measurement uncertainty estimation is performed in accordance with the latest standards. Manual calculation (estimation) of measurement uncertainty is a complex and time-consuming process. Validity of the automatic estimation of measurement uncertainty is demonstrated by the accompanying documentation and automatically generated output lists with whole procedure shown in detail....

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