Industrial transformers are complex devices that transfer electrical current from one circuit to another. Although built with durable and reliable parts, transformers do not last forever. You can prolong their life, though, and provide safety by performing the following maintenance steps throughout the year.
Check for Variations in Sound
A lot of times you can tell something is wrong with a transformer just by the way it sounds. A normal sound, no matter what type of transformer it is, is dependent on the core's tightness and structure of the internal components.