Noise measurements of the power transformers

Abstract

International standards related to functional characteristics of power transformers, very precisely prescribe permitted noise level of transformers in use. Transformer’s noise depends on the power, and a number of numerous factors based on the quality of transformer sheet, cooling mode, the magnetic core construction design and technology of the windings. Final laboratory testing of transformers, which are obligatory at each transformer’s delivery to the customer, includes noise measurements as well. This paper presents the methodology of noise measurements of power transformers in ABS Minel Transformers factory in Ripanj, thus confirming high technological level and product’s quality, both in terms of transformation of electrical energy, and from the aspect of environmental protection.