Add to ORKGU ovom završnom radu obrađena su glavna načela transformatora, princip rada i konstrukcija, kao i sama podjela transformatora u EES-u. Obrađeni su svi transformatori u EES-u, odnosno blok transformatori, mrežni transformatori i distribucijski transformatori. Za distribucijske transformatore prikazana je njihova rasprostranjenost u RH.In this final paper the main principles of transformers are threated, the principle of operation, construction and the division transformers in the power system. All the transformers in the power system are proccesed. These are block transformers, network transformers and distribution transformers. For distribution transformers, their distribution in Republic of Croatia is ...