Intercomparison of nonsinusoidal calibration systems at NRC Canada and SP Sweden

A portable and stable source of ac voltage and current capable of generating sinusoidal and distorted waveforms was used as a means of comparing the nonsinusoidal calibration systems at the National Research Council of Canada (NRC) and the Swedish National Testing and Research Institute (SP). Comparisons of the test results obtained at the two laboratories were valuable in evaluating the performance of the two nonsinusoidal calibration systems especially when used to measure the amplitude and phase of harmonic voltages and currents in the presence of large fundamental components.