Characteristics of the Phase Difference Between Arc-current and Magnetic Field Due to the Shape Variation of the Short-Circuit Ring of the Driving Coil

구동코일의 단락환 형상변경에 따른 아크전류와 자속간의 위상차 특성

In these days the hybrid interrupters are widely used for medium voltage class circuit breakers. In the design of the hybrid interrupter, the shape of the short-circuit ring is one of the most important design parameters. Recently the investigation into the phase difference between arc current and magnetic field due to the shape variation of the short circuit ring has been conducted. In this paper, the results of eddy current analyses in the hybrid interrupter and test result are presented.