Medium power transformers with a power range from 40 to 250 mva and a voltage of over 72.5 kv are used as network and generator step-up transformers. Medium power transformers are also widely used to step up power from on- and offshore-windparks, and may even be installed in offshore-substations. Bringing the energy safely to the consumer: a basic requirement applicable to all power transformers. However, every single one is unique designed according to individual factors such as voltage, power, climate, system topography, sound level and many more.