한국전기전자재료학회논문지 (Journal of the Korean Institute of Electrical and Electronic Material Engineers)

  • 제32권3호
  • /
  • Pages.241-245
  • /
  • 2019
  • /
  • 1226-7945(pISSN)
  • /
  • 2288-3258(eISSN)
한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
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전도성 E1 펄스에 대한 ZnO 바리스터의 동작특성 분석

Response Characteristic Analysis of ZnO Varistors by the Conductive E1 Pulse

  • 투고 : 2019.02.28
  • 심사 : 2019.03.27
  • 발행 : 2019.05.01
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초록

This work presents the response characteristics of a ZnO varistor to conductive EMP. An E1 pulse, standardized to MIL-STD-188-125-1, was applied to the varistors wherein the residual current and response times were measured with the applied E1 pulse current. Additionally, the response time was measured according to the length of the connection path. Consequently, the amplitude of the residual voltage through the ZnO varistors was increased with increasing amplitude of the applied E1 pulse current. As the length of the connection path increased, the operating response time and residual peak voltage also increased. These results indicate that the response characteristics of ZnO varistors can be applied to basic data to support the use of varistors as a protective measure against conductive EMP.

키워드

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Fig. 1. Current waveform of E1 pulse.

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Fig. 2. Experimental set-up.

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Fig. 3. The output waveform of PCI generator.

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Fig. 4. The varistors used in test.

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Fig. 5. Waveforms of the input pulse current and residual voltage at 200 A.

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Fig. 6. Waveforms of the input pulse current and residual voltage at 800 A.

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Fig. 7. Typical waveform of residual voltage.

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Fig. 8. Changes of residual voltage to injected E1 pulse.

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Fig. 9. Changes of response time to injected E1 pulse.

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Fig. 10. Changes of response time with length of connection path.

Table 1. Definition of conducted HEMP waveform in Mil-Std-188-125-1.

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Table 2. Specification of varistors.

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Table 3. The response time and residual peak voltage with change of connection path length.

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참고문헌

  1. S. Y. Hyun, J. K. Du, W. Kim, and J. G. Yook, J. Korean Inst. Electromagn. Eng. Sci., 25, 757 (2014). [DOI: https://doi.org/10.5515/kjkiees.2014.25.7.757]
  2. W. A. Radasky, C. E. Baum, and M. W. Wik, IEEE Trans. Electromagn. Compat., 46, 314 (2004). [DOI: https://doi.org/10.1109/temc.2004.831899]
  3. S. B. Smith and R. B. Standler, IEEE Trans. Power Del., 7, 1275 (1992). [DOI: https://doi.org/10.1109/61.141841]
  4. T. H. Jang, J. Korean Inst. Electromagn. Eng. Sci., 24, 772 (2013). [DOI: https://doi.org/10.5515/kjkiees.2013.24.8.772]
  5. J. H. Lee, J. S. Han, G. S. Kil, J. W. Kwon, D. Y. Song, and N. S. Choi, J. Korea Inst. Inf. Commun. Eng., 4, 793 (2014).
  6. Mil-Std-188-125-1, "High-Altitude Electromagnetic Pulse (HEMP) protection for ground-based c4i facilities performing critical, time-urgent missions, Part I - fixed facilities", 2005.