The Oil Cooled Isolation Transformer is used to insulate and cool a transformer. It must therefore have high dielectric strength, thermal conductivity, and chemical stability, and must keep these properties when held at high temperatures for extended periods. It is a popular transformer type and it is used to transfer electrical energy for the source of alternating current to the electrical devices. It uses mineral oil as the heat dissipation and insulation medium. The Oil Cooled Isolation Transformer is made for use in various industries.