Today electricity has become the lifeline of most of the activities and even sectors of modern urban India as it ranges from lighting up the homes and offices to even industries and supporting structures such as hospitals, transports and communication. The power transformer is a vital substation asset when it comes to the transmission and distribution of electricity. The essence of power transformers to keep the electric supply chain unhampered becomes crucial for the social and economic growth of the populated cities of India. 1. Key Role in Power Distribution Power transformers are those ones used in multiple applications converting voltage from a power station to a consumer by either increasing or decreasing it. In India where people especially in the urban areas have demanded more electricity these transformer make it possible to distribute high voltage electricity from the power stations to the various centers since it dangerous to transmit them over long distances. When electrici