DRAXLER, K., et al. Calibration of burdens for instrument transformers. In: 2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC 2020). Dubrovnik, 2020-05-25/2020-05-28. Piscataway, NJ: IEEE, 2020. ISBN 978-1-7281-4460-3. DOI 10.1109/I2MTC43012.2020.9128565. Available from: https://ieeexplore.ieee.org/document/9128565
The first part of this paper deals with the influence of burden accuracy on the errors of current and voltage instrument transformers. The requirement stated in the prepared standard, corresponding to a tolerance of burden value B ± 3 % and power factor PF ± 0.02, is confronted with measurement results. The second part of the paper deals with the calibration process for instrument transformer burdens. This is followed by a description of the 3-voltmeter method for determining PF and apparent power B, including the measurement uncertainty calculation. A comparison is made between the achieved measurement uncertainties and the requirements stated in the prepared standard.
eng
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
IEEE
dc.relation.ispartof
2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC 2020)
dc.subject
burden
eng
dc.subject
power factor
eng
dc.subject
instrument transformer
eng
dc.subject
ratio error
eng
dc.subject
phase displacement
eng
dc.subject
uncertainty
eng
dc.title
Calibration of burdens for instrument transformers