WG 25 - TC 14/WG 25

Provides supporting information to help both manufacturers and purchasers apply the measurement techniques described in IEC 60076-10. Describes the sources and characteristics of transformer and reactor sound, provides practical guidance on making measurements, and discusses factors that may influence the accuracy of the methods. Is applicable to transformers and reactors together with their associated cooling auxiliaries.

Defines sound pressure and sound intensity measurement methods by which sound power levels of transformers, reactors and their associated cooling auxiliaries may be determined. Is applicable to transformers and reactors covered by the IEC 60076 series, IEC 60289, and the IEC 61378 series, without limitation as regards size or voltage and when fitted with their normal cooling auxiliaries.