一种新型电流互感器自校准标准仪

I. Zoltán
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引用次数: 3

摘要

研制了一种基于电流比较器的电流互感器自校正仪。该仪器通过数字矢量电压表测量误差的同相分量和正交分量。内置比率匹配单元,可以对不同比率的电流互感器进行比较。一套内置的辅助绕组确保仪器的现场自检完成。比值匹配单元可以通过反偏移法进行测试和校准。仪器的基本精度为2ppm,分辨率为0.1 ppm。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A new self-calibrating standard instrument for current transformer calibration
A new current comparator-based self-calibrating instrument for current transformer calibration has been developed. The instrument measures the in-phase and quadrature components of the error by means of a digital vector voltmeter. The built-in ratio matching unit makes it possible to compare current transformers of different ratios. A set of built-in auxiliary windings ensure complete on-site self-testing of the instrument. The ratio matching unit can be tested and calibrated by the anti-offset method. The basic accuracy of the instrument is 2 ppm with 0.1 ppm resolution.<>
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