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김종겸(Jong-Gyeum Kim),박영진(Young-Jeen Park),유홍국(Hong-Kug Yoo) 한국조명·전기설비학회 2021 한국조명·전기설비학회 학술대회논문집 Vol.2021 No.11
Transformers are very important electrical devices in power conversion. Transformers are marked with % impedance on the nameplate. The value of % impedance is an important parameter for calculating voltage drop and fault current. The % impedance is displayed differently depending on the voltage and rated capacity. In this study, we compared and analyzed how % impedance is set in international standards.