An AC Power Standard for Loss Measurement Systems for Testing Power Transformers.

An ac power standard for high voltages and high currents for power frequencies is presented. It consists of commercially available components and is traceable to the primary standards of Physikalisch-Technische Bundesanstalt. A dedicated correction algorithm automatically corrects the systematic errors of the components and leads to an uncertainty on the order of 40 μW/VA of the active power for v...