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MAPAN

pp 1–7 | Cite as

Adapted Technique for Calibrating Voltage Dividers of AC High-Voltage Measuring Systems

  • Hala M. Abdel MageedEmail author
  • Rehab S. Salah Eldeen
Original Paper

Abstract

This paper presents an adapted technique to calibrate the AC voltage divider of AC high-voltage measuring systems up to 200 kV at the Egyptian National Institute of Standards. Two identical capacitors have been used as two similar AC high-voltage capacitive dividers. Firstly, the dividing ratios of two capacitors have been achieved by calibrating each capacitor via a traceable reference standard AC high-voltage divider up to 100 kV. Then, both capacitors have been connected in series to perform as one 200-kV AC voltage divider. They have been calibrated via the same 100-kV reference standard divider to experimentally get their actual dividing ratios up to 100 kV. In order to get their dividing ratios from 100 to 200 kV, a mathematical derivation has been determined. The concept of this derivation is when applying the doubled voltage to two identical pre-calibrated voltage dividers connected in series, their input voltage is almost equally divided across these two dividers. Finally, these calibrated two series capacitors have been used to calibrate a voltage divider of a 200-kV AC HV measuring system. The uncertainty contributions for all the results have been estimated. Enhanced uncertainties have been acquired using this proposed adapted calibration technique.

Keywords

Adapted calibration technique AC high-voltage measuring systems Capacitive high-voltage dividers Dividing ratios Mathematical derivation Uncertainty 

Notes

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Copyright information

© Metrology Society of India 2019

Authors and Affiliations

  1. 1.National Institute of StandardsGizaEgypt

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