DOI QR코드

DOI QR Code

Response Characteristic Analysis of ZnO Varistors by the Conductive E1 Pulse

전도성 E1 펄스에 대한 ZnO 바리스터의 동작특성 분석

  • Received : 2019.02.28
  • Accepted : 2019.03.27
  • Published : 2019.05.01

Abstract

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.

Keywords

JJJRCC_2019_v32n3_241_f0001.png 이미지

Fig. 1. Current waveform of E1 pulse.

JJJRCC_2019_v32n3_241_f0002.png 이미지

Fig. 2. Experimental set-up.

JJJRCC_2019_v32n3_241_f0003.png 이미지

Fig. 3. The output waveform of PCI generator.

JJJRCC_2019_v32n3_241_f0004.png 이미지

Fig. 4. The varistors used in test.

JJJRCC_2019_v32n3_241_f0005.png 이미지

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

JJJRCC_2019_v32n3_241_f0006.png 이미지

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

JJJRCC_2019_v32n3_241_f0007.png 이미지

Fig. 7. Typical waveform of residual voltage.

JJJRCC_2019_v32n3_241_f0008.png 이미지

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

JJJRCC_2019_v32n3_241_f0009.png 이미지

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

JJJRCC_2019_v32n3_241_f0010.png 이미지

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

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

JJJRCC_2019_v32n3_241_t0001.png 이미지

Table 2. Specification of varistors.

JJJRCC_2019_v32n3_241_t0002.png 이미지

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

JJJRCC_2019_v32n3_241_t0003.png 이미지

References

  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.