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Leakage Current Effect of a Supporting Insulator on the Performance of a Resistive High-voltage

  • Sang-Hwa Lee
  • Kwang-Min Yu
  • Jang-Young Choi
  • Seok-Myeong Jang
Original Article

Abstract

A new method is presented for measuring the insulation resistance of a Teflon insulator in a resistive high-voltage divider, which is difficult when using the bridge or voltmeter methods. Our method determines the insulation resistance from the difference in the voltage dividing ratio before and after connecting calibrated high-ohm resistors to the Teflon insulator in parallel. As the measurement results performed using this method, it is shown that the Teflon’s insulation resistance, a support of a national dc high-voltage divider, is 5 × 1014 to 2 × 1015 Ω. This means that the leakage resistance effect on the voltage dividing ratio was less than 0.4 × 10−6, representing an insignificant impact on the divider’s performance.

Keywords

Resistive high-voltage divider Teflon Insulation resistance Voltage dividing ratio Resistance ratio Leakage effect 

Notes

Acknowledgements

This research was supported by Enhancement of Measurement and Standards Technologies in Physical SI units funded by Korea Research Institute of Standards and Science (KRISS—2018—GP2018-0001)

References

  1. 1.
    Park JH (1962) Special shielded resistor for high-voltage DC measurements. J Res Natl Inst Stand C 66C:19–24CrossRefGoogle Scholar
  2. 2.
    Knight RBD, Martin P (1993) A high voltage divider having an uncertainty of 5 ppm at 100 kV. IEEE Trans Instrum Meas 42:568–570CrossRefGoogle Scholar
  3. 3.
    Li Y, Rungis J, Jing T, Su T, Chen IP, Lee D, Shimizu K (2001) International comparison of a resistive divider at 100 KV DC. IEEE Trans Instrum Meas 50:436–439CrossRefGoogle Scholar
  4. 4.
    Li Y, Rungis J, Kim K-T, Cho YM, McComb TR, Dunn JG, Van Der Zwan L, Hoffman D (1999) Interlaboratory comparison of high direct voltage resistor dividers. IEEE Trans Instrum Meas 48:158–161CrossRefGoogle Scholar
  5. 5.
    Marx R (2001) New concept of PTBs standard divider for direct voltages of up to 100 kV. IEEE Trans Instrum Meas 50:426–429CrossRefGoogle Scholar
  6. 6.
    EURAMET (2011) Traceability of DC high voltage reference measuring systems up to 200 kV, supplementary comparison final report, Rep. EM-S29, Madrid, Nov 2011Google Scholar
  7. 7.
    Bergman A (1996) Absolute calibration of a 100 kv DC divider. In: Conference on precision electromagnetic measurements digest, pp 565–566Google Scholar
  8. 8.
    Li Y, Ediriweera MK, Emms FS, Lohrasby A (2011) Development of precision DC high-voltage dividers. IEEE Trans Instrum Meas 60:2211–2216CrossRefGoogle Scholar
  9. 9.
    Jarrett DG (1997) Automated guarded bridge for calibration of multimegaohm standard resistors from 10 MΩ to 1 TΩ. IEEE Trans Instrum Meas 46:325–328CrossRefGoogle Scholar
  10. 10.
    Dunn AF (1991) Measurement of resistance ratios in the range to 100 megaohms. IEEE Trans Instrum Meas 40:278–280CrossRefGoogle Scholar
  11. 11.
    Galliana F, Boella G (2000) The electrical dc resistance scale from 100 kΩ to 1 TΩ at IEN. IEEE Trans Instrum Meas 49:959–963CrossRefGoogle Scholar
  12. 12.
    Lee SH, Yu KM, Kang JH, Kim MS, Kim KT (2012) A Josephson voltage-traceable DC high-voltage divider evaluation using the binary step-up method. Measurement 45:488–492CrossRefGoogle Scholar
  13. 13.
    Lee SH, Choi JY, Jang SM (2014) Improvement of measuring capacity of the DC high-voltage divider for a national high-voltage standard. Trans Korean Inst Electr Eng 63:1622–1625CrossRefGoogle Scholar
  14. 14.
    Yu KM, Kim WS, Lee SH, Han KS, Kang JH (2014) A method for measuring high resistances with negligible leakage effect using one voltage source and one voltmeter. Meas Sci Technol 25:075012CrossRefGoogle Scholar
  15. 15.
    ISO/IEC GUIDE 98-3:2008, Guide to the expression of uncertainty in measurement, (GUM:1995)Google Scholar

Copyright information

© The Korean Institute of Electrical Engineers 2019

Authors and Affiliations

  • Sang-Hwa Lee
    • 1
  • Kwang-Min Yu
    • 1
  • Jang-Young Choi
    • 2
  • Seok-Myeong Jang
    • 2
  1. 1.Division of Physical MetrologyKorea Research Institute of Standards and Science (KRISS)DaejeonRepublic of Korea
  2. 2.Department of Electrical EngineeringChungnam National UniversityDaejeonRepublic of Korea

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