Nile Oldham , Thomas Nelson , Nien Fan Zhang and Hung-kung Liu
National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
Nile Oldham et al 2003 Metrologia 40 01003
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.
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Issue 1A (Technical Supplement 2003)
Nile Oldham et al 2003 Metrologia 40 01003
J Terrien 1972 Metrologia 8 99
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