MEASURING ACOUSTIC NOISE EMITTED BY POWER TRANSFORMERS

摘要

This paper proposes a new Measurement Standardization Procedure to measure and quantify theacoustic noise produced by power transformers in audio and video equipment under normal and adverse mainsconditions. These conditions and the physical mechanisms that cause the noise are discussed. A newmeasurement set up and units are proposed to measure and quantify the transformer noise. Examples ofmeasurements on four transformers are given for comparision and illustration.