CCEM-K5 Comparison of 50/60 Hz Power

Electrical standards of low-frequency (50/60 Hz) power at 15 national metrology institutes (NMIs) were compared to establish the relationship between the electrical units at these laboratories. The results of this comparison are described. The differences between each laboratory's values and the reference values were within the measurement expanded uncertainties at a coverage factor k = 2. Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database www.bipm.org/kcdb. The final report has been peer-reviewed and approved for publication by the CCEM according to the provisions of the Mutual Recognition Arrangement (MRA).