Conclusions
A standard two-stage current transformer at a frequency of 50 Hz when operating with domestic differential-null comparison instrument is not less accurate than three-winding magnetic current comparators and is superior to them in its speed of measurement and portability. For a simple and economic modernization of the standard measuring facilities employed in the USSR to check commercial-frequency current transformers the three-winding magnetic current comparators and uncompensated transformers should be replaced by standard two-stage current transformers.
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Literature cited
All-Union State Standard (GOST) 8.217-76. GSI. Current Transformers. Methods and Facilities for Checking [in Russian].
N. L. Kusters and W. J. M. Moore, IEEE Trans. Instrum. Measur.,IM-13 (1964).
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B. V. Zakharov, Izmer. Tekh., No. 12 (1977).
Additional information
Translated from Izmeritel'naya Tekhnika, No. 5, pp. 65–67, May, 1980.
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Zakharov, B.V. Application of a standard two-stage transformer for checking purposes. Meas Tech 23, 464–467 (1980). https://doi.org/10.1007/BF00824546
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DOI: https://doi.org/10.1007/BF00824546