Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference (한국조명전기설비학회:학술대회논문집)
- 2007.05a
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- Pages.291-294
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- 2007
The electrical properties of in 18kV ZnO surge arrestor with mixed direct and 60Hz Alternating Voltage
중첩전압(직류 +60Hz 교류)에서 18kV 배전용 피뢰기의 전기적 특성
- Published : 2007.05.10
Abstract
This paper preserts the characteristics of leakage currents flowing through 18 kV zinc oxide (ZnO) surge arrester under the mixed DC and AC voltages. The I-V curves of ZnO surge arrester were measured as a function of the voltage ratio K The I-V curves under the mixed DC and AC voltages lay between the pure DC and AC characteristics, and the cross-over phenomenon in I-V curves was observed at the low current region As a result, the increase of DC component to mixed voltages causes the increase of resistive component of total leakage current th ZnO surge arrester.
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