Abstract:
A simple mains-frequency current transformer ratio build-up scheme has been developed which enables calibration by absolute means of ratios from 5 A:5 A to 500 A:5 A with...Show MoreMetadata
Abstract:
A simple mains-frequency current transformer ratio build-up scheme has been developed which enables calibration by absolute means of ratios from 5 A:5 A to 500 A:5 A with uncertainties of 0.03 parts in 10/sup 6/ and 0.05 /spl mu/rad. The build-up is based on series-parallel interchange of primary windings of two-stage transformers with magnetically shielded second stages.
Published in: IEEE Transactions on Instrumentation and Measurement ( Volume: 50, Issue: 2, April 2001)
DOI: 10.1109/19.918121
References is not available for this document.
Contents Select All
1.
A. C. Corney, "A traceable mains-frequency power standard", IEEE Trans. Instrum. Meas., vol. 48, pp. 418-421, Apr. 1999.
2.
P. J. Betts, W. K. Clothier and H. A. Smith, "Method for the absolute calibration of current transformers", Proc. Inst. Elect. Eng. A, vol. 129, pp. 322-327, 1982.
3.
W. J. M. Moore and P. N. Miljanic, The Current Comparator, U.K., London:Peter Peregrinus, Ltd., 1988.
4.
A. Braun, "A new method for the calibration of a national current ratio standard", IEEE Trans. Instrum. Meas., vol. 29, pp. 482-484, Dec. 1980.
5.
A. H. M. Arnold, "Current transformer testing", J. Inst. Elect. Eng., vol. 74, pp. 424-444, 1934.
6.
P. J. Betts, "Two-stage current transformers in differential calibration circuits", Proc. Inst. Elect. Eng. A, vol. 130, pp. 324-328, 1983.
