Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

An International Comparison of 50/60 Hz Power (1996-1999)



Nile M. Oldham, Thomas L. Nelson, R. Bergeest, G. Ramm, R. Carranza, A. C. Corney, M. Gibbes, Gregory Kyriazis, H. Laiz, L. X. Liu, Z. Lu, U. Pogliano, K. E. Rydler, E. Shapiro, E. So, M. Temba, P. Wright


An international comparison of 50/60 Hz power is described. The traveling standard was an electronic power transducer which was tested at 120 volts, 5 amperes, 53 hertz, at five power factors (1.0, 0.5 lead, 0.5 lag, 0.0 lead, and 0.0 lag). Fifteen National Metrology Institutes from six Metrology Regions participated in the comparison.
IEEE Transactions on Instrumentation and Measurement


international comparison, key comparison, power, traveling standard, wattmeter


Oldham, N. , Nelson, T. , Bergeest, R. , Ramm, G. , Carranza, R. , Corney, A. , Gibbes, M. , Kyriazis, G. , Laiz, H. , Liu, L. , Lu, Z. , Pogliano, U. , Rydler, K. , Shapiro, E. , So, E. , Temba, M. and Wright, P. (2001), An International Comparison of 50/60 Hz Power (1996-1999), IEEE Transactions on Instrumentation and Measurement, [online], (Accessed July 24, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created March 31, 2001, Updated October 12, 2021