Below are some of the instances why transformers fail. As a general rule, when transformers are water-cooled, most of the failures occur because of a breakdown of the insulation between the windings. Typically this is due to lack of water, poor quality water, the water-inlet temperature being too high, or operating the transformer outside [...]

To properly size or specify a transformer the following information is generally required: Input voltage to the transformer kW of the power source Frequency range of the power source, and at which the transformer will operate Turns ratio or the output voltage required at full load (or no load) Input kVA at the minimum [...]

The transformer’s main purpose is to change one form of voltage to another, making it possible to operate a great variety of loads at their suitable voltages. The coils are usually wound on a core of laminated electrical steel or ferrite magnetic material.