An international comparison of low audio frequency power meter calibrations conducted in 1989

Abstract

Summary form only given. The results of comparison of audio-frequency power meter calibrations conducted in 1989 between the National Research Council, Canada, the National Physical Laboratory, United Kingdom, and the National Institute of Standards and Technology, USA, are reported. A time-division watt converter, developed at the National Research Council, was used as the transfer standard. The measurements were made at 120 V, 5 A, power factors of one, zero lead and lag, and frequencies up to 5 kHz. >