Modeling of Temperature Distribution Inside a Current Transformer

Current transformer (CT) is a device that transfers the electrical energy from one circuit to another through a shared magnetic field. In a CT, heat is generated in the core, tank wall, primary and secondary windings. The performance of current transformer is well indicated by the temperature distribution inside a CT. In this study, numerical analysis was performed to predict the temperature distribution inside a CT at every instant under different load conditions. It was found that the numerical results obtained were in good agreement with the experimental measurements.