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The establishment of 10 kV to 500/ square root 3 kV power frequency voltage ratio national standard system and study of the calibration method

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1 Author(s)
Guanggan, G. ; Nat. High Voltage Meterage Station, Wuhan, China

Summary form only given. Methods used to establish and calibrate a 10-500/ square root 3 kV power frequency voltage ratio standard system are described. The standards are a series of capacitive dividers. which are calibrated at 6 kV with an inductive voltage divider but used at the higher operating voltages. Four potential transformers, used as 10-, 35-, 110/ square root 3-, and 220/ square root -kV working standards, were calibrated by the new system. Another potential transformer, which had been calibrated at the National Research Council of Canada (NRC) in September/October 1987, was also calibrated with the new system. The results indicate uncertainties of less than 10 parts per million and confirm the comparison with NRC.<>

Published in:

Precision Electromagnetic Measurements, 1990. CPEM '90 Digest., Conference on

Date of Conference:

11-14 June 1990