Noise is defined as unwanted sound. But, what is unwanted sound? A mellow sound to some, can be completely unacceptable to others. Attending rock concerts with noise levels at eardrum rattling levels is totally stimulating to many people. Put those same people in a different environment, possibly next to a transformer, and there will be wild protests. The difference then between noise and sound is in the “ear of the hearer”. Since it is necessary to place electrical apparatus alongside a wide spectrum of people we have to accept the inevitable, that even under normal conditions, somebody will always complain.
The causes and reduction of transformer noise has
The remedies we use to counter possible objections to transformer noises are varied and in some cases, expensive, because we cannot produce a blanket remedy to cover all situations. It is absolutely necessary to consider each case on its merits, to apply the general rules of acoustic technology and to be familiar with the causes of transformer noise. The techniques can be explained simply enough for anyone to understand and the rules are, in the main easy to apply.
The BEST RULE however is to PLAN AHEAD. Finding out you have a noise problem (or vibration problem) after the placement of the unit is costly, time consuming and frustrating.
