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This paper describes investigations on the assessment of measurement uncertainties due to white and colored noise spectra on sampled data for electrical alternating (ac) power. The analysis were corroborated by measurements and can be extended to other synchronous sampling systems yielding a detailed evaluation of noise effects, once their spectral power density is known.
This paper describes the setup of the modernized instrument transformer burden measurement system of the Physikalisch-Technische Bundesanstalt. Its measuring ranges cover burden ranges up to several 100 VA of conventional current transformers (CT) and voltage transformers (VT) according to the relevant IEC and ANSI standards.
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