Cyber Times International Journal of Technology & Management

The electric arc is the switching element of the circuit breaker, so the indispensable part of the circuit breaker model is the arc model. The physical complexity in the behavior of an electric arc during the interrupting process has always provided the great prospect for researchers to develop appropriate models to appreciate and describe this process. In the early years of the interruption theory, investigative efforts were concentrated at the current zero region, which most obviously is the region when the alternating current arc either reignites or is extinguished. There are three models (Physical Model, Black Box Model and Parameter Model) that are used to describe the behavior of arc. This paper is projected to offer a detailed study of different arc models based on different arc interruption theories. Cassie-Mayr arc model was evaluated. Cassie’s model gives fine results for large currents, while Mayr’s model is superior for currents near zero. Combination of the Cassie and Mayr arc model modified Mayr arc model with different parameters will be used to obtain improved result