Characteristics of High Energy Inductor to Generate Current Waveform of 10/350 ${\mu}s$

10/350 ${\mu}s$ 전류파형을 형성하기 위한 대용량 인덕터 특성

This paper presents the characteristics of external inductor for impulse current waveform with 10/350 ${\mu}s$ time parameters. Impulse generator was composed with capacitor having large capacitance and low working voltage for the safe of operator and small discharging sound. Parallel R-L-C circuits with crow-bar gaps and superposition method were proposed to make a high current lightning impulse according to IEC 62305-1. The high energy inductor with several taps for fitting half decay time T2 within the tolerance range and experimental data of inductance according to charging voltages were suggested.